ISSC IS1690S-255 User manual

1
IS1690S-255
UI Tool User Manual
Revision History
Date
Revision Content
Version
January/30’2015
Release version
1.0

2
Index
1. INTRODUCTION.......................................................................................................................................................7
2. NOMENCLATURE....................................................................................................................................................8
2.1 MFB.....................................................................................................................................................................8
2.2 Pairing Mode.......................................................................................................................................................8
2.3 Single Mode........................................................................................................................................................8
2.4 Twin Mode...........................................................................................................................................................8
2.5 Twin Speaker Link...............................................................................................................................................8
2.6 Twin Master.........................................................................................................................................................8
2.7 Twin Slave...........................................................................................................................................................8
2.8 Twin Speaker Pairing..........................................................................................................................................8
3. TOOL OVERVIEW....................................................................................................................................................9
3.1 Start Menu Page.................................................................................................................................................9
3.1.1 Operation.....................................................................................................................................................9
3.1.2 Information Block.......................................................................................................................................10
3.2 Main Features Page..........................................................................................................................................10
3.2.1 Supported Profiles.....................................................................................................................................10
3.2.2 Buttons.......................................................................................................................................................11
3.2.3 Power On Enter Twin Mode Pairing Setting..............................................................................................12
3.2.4 Other Features ..........................................................................................................................................12
3.3 Function Settings Page.....................................................................................................................................13
3.4 Power Switch Setting........................................................................................................................................13
3.2.1 MFB Power ON/OFF.................................................................................................................................13
3.2.2 Power On Directly......................................................................................................................................14
3.2.3 Slide Switch...............................................................................................................................................14
3.2.4 MFB Fast Power ON/OFF.........................................................................................................................15
3.5 NFC Setting ......................................................................................................................................................16
3.5.1 NFC Detection Enable...............................................................................................................................16
3.5.2 NFC Stable Time.......................................................................................................................................16
3.6 Factory Volume Level (For Master Reset Usage) ............................................................................................16
3.6.2 Audio Volume Level(Music).......................................................................................................................16

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3.6.3 Voice Volume Level(SCO) ........................................................................................................................16
3.7 Connection Setting............................................................................................................................................16
3.7.1 Maximum Paired Device ...........................................................................................................................17
3.7.2 Link Back Scheme.....................................................................................................................................17
3.7.3 Pairing Mode Duration...............................................................................................................................17
3.7.4 Infinite Pairing Mode Duration if No Paired Record ..................................................................................17
3.7.5 Link Loss Reconnection Duration..............................................................................................................17
3.7.6 Link Back When Power On .......................................................................................................................17
3.7.7 Link Specific Profile When Power On .......................................................................................................17
3.7.8 Link HS Duration .......................................................................................................................................17
3.7.9 Link A2DP Duration...................................................................................................................................17
3.8 LED Setting.......................................................................................................................................................17
3.8.1 LED FLASH Parameters ...........................................................................................................................17
3.8.2 Defined LED State.....................................................................................................................................19
3.8.3 Charging LED Setting................................................................................................................................20
3.9 Battery Detection Setting..................................................................................................................................21
3.9.1 Battery Detection.......................................................................................................................................21
3.9.2 Low Battery Warning Level .......................................................................................................................21
3.9.3 Battery Shut Down Level...........................................................................................................................21
3.9.4 Low Battery Warning Time........................................................................................................................21
3.9.5 Battery Report via AT Cmd .......................................................................................................................21
3.10 Power Save.....................................................................................................................................................21
3.10.1 Auto Power Off Time...............................................................................................................................21
3.10.2 In Case Of Auto Power Off Inhibit...........................................................................................................22
3.11 Charging Setting .............................................................................................................................................22
3.11.1 Charging Detect Enable ..........................................................................................................................22
3.11.2 Advance Charger Enable ........................................................................................................................22
3.11.3 Re-Charging as Charge complete...........................................................................................................22
3.11.4 Double Charging Current ........................................................................................................................23
3.11.5 Charging Current.....................................................................................................................................23

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3.11.6 Constant Current Percent........................................................................................................................23
3.11.7 Constant Voltage Charging OK Current Percent ....................................................................................23
3.11.8 Constant Current Protect Time................................................................................................................23
3.11.9 Constant Voltage Protect Time ...............................................................................................................23
3.11.10 Disallow SHS Active When Charger On ...............................................................................................23
3.12 Button Settings................................................................................................................................................24
3.12.1 Button Press Duration .............................................................................................................................24
3.12.2 Special Key Setting .................................................................................................................................24
3.12.3 Function Mapping Table..........................................................................................................................25
3.12.4 Combined Function Table .......................................................................................................................25
3.12.5 Call State.................................................................................................................................................26
3.12.6 Button Functions......................................................................................................................................27
3.13 Tone Setting....................................................................................................................................................30
3.13.1 External Audio Tones..............................................................................................................................32
3.13.2 Add and Delete External Tones ..............................................................................................................32
3.13.3 Other Tone Settings ................................................................................................................................34
3.14 Line-in Setting.................................................................................................................................................34
3.14.1 Stereo Line In Loop Back........................................................................................................................34
3.14.2 Line-in/SBC Priority.................................................................................................................................34
3.14.3 Line-in Mute/Unmute...............................................................................................................................34
3.14.4 Line-in Silence Detection.........................................................................................................................34
3.15 Amplifier Control Setting .................................................................................................................................34
3.15.1 Cut Off Amplifier When Mute...................................................................................................................35
3.15.2 Off Amplifier T0........................................................................................................................................35
3.15.3 Off Amplifier T1........................................................................................................................................35
3.15.4 Off Amplifier T2........................................................................................................................................35
3.16 CODEC Function............................................................................................................................................36
3.16.1 Speaker Output .......................................................................................................................................36
3.16.2 DSP Codec Always On ...........................................................................................................................36
3.16.3 Close Codec Time...................................................................................................................................36

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3.16.4 Filter Type For Audio Stereo Quality.......................................................................................................36
3.16.5 Enable LR Sound Channel Swap............................................................................................................36
3.16.6 Enable LR Sound Mix..............................................................................................................................36
3.16.7 DAC Bias For Audio Quality....................................................................................................................36
3.17 Indication Function..........................................................................................................................................36
3.17.1 Indication Pin1 Polarity............................................................................................................................37
3.17.2 Voice(SCO) Indication.............................................................................................................................37
3.17.3 Audio(SBC) Indication.............................................................................................................................37
3.17.4 Ring Tone Indication................................................................................................................................37
3.17.5 Incoming Call Indication ..........................................................................................................................37
3.17.6 HF Link Indication....................................................................................................................................37
3.17.7 A2DP Link Indication...............................................................................................................................37
3.17.8 Button Event Trigger Indication...............................................................................................................37
3.18 Twin Mode Setup ............................................................................................................................................38
3.18.1 Twin Speaker Name Segment ................................................................................................................38
3.18.4 Twin Speaker Power On Behavior..........................................................................................................39
3.18.5 Twin Speaker Pairing Success For Twin Master ....................................................................................40
3.18.6 Twin Speaker Pairing Failed For Twin Master........................................................................................40
3.18.7 Twin Speaker Pairing Failed For Twin Slave..........................................................................................41
3.19 Name Fragment..............................................................................................................................................42
3.19.1 Name Fragment.......................................................................................................................................42
3.20 Security...........................................................................................................................................................42
3.20.1 Enable Simple Pairing.............................................................................................................................42
3.20.2 PIN Code.................................................................................................................................................42
3.21 Misc. Options..................................................................................................................................................42
3.21.1 Always Re-bundle in Pairing Mode .........................................................................................................42
3.21.2 Be Discovered as Standby Mode............................................................................................................42
3.21.3 Enter Pairing When Power On................................................................................................................42
3.21.4 Suspend Streaming When SCO Established..........................................................................................43
3.21.5 Circular Volume Control ..........................................................................................................................43

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3.21.6 Class Of Device.......................................................................................................................................43
3.21.7 Phone NR and AEC Function..................................................................................................................43
3.21.8 Fade In Interval........................................................................................................................................43

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1. INTRODUCTION
IS1690S_255 Multi-Speaker (Called n-SPK in this document) is a Bluetooth speaker solution. It supports voice and audio output,
phone call control and music remote control. Besides, two n-SPKs can be combined to form a pair of speakers with surround
sound effect by a special wireless technology.
This document describes the UI configuration tool which provides a friendly interface to edit parameters of the n-SPK. The
configuration determines the operations, indications and capability for the n-SPK. The customers can create their products they
want by adjusting the configuration.

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2. NOMENCLATURE
2.1 MFB
MFB(Multiple Function Button) is a specific button that can be used for turning on/off n-SPK and general purpose functions.
2.2 Pairing Mode
If n-SPK is in Pairing Mode, it is discoverable and waiting for remote devices to connect to.
2.3 Single Mode
If n-SPK doesn’t have a connection with another n-SPK and isn’t pairing with it, the state of the n-SPK is called Single Mode
2.4 Twin Mode
The n-SPK has a connection with another one or is pairing with it the state of the n-SPK is called Twin Mode.
2.5 Twin Speaker Link
The connection between a pair of n-SPKs is called Twin Speaker Link.
2.6 Twin Master
Twin Master is the n-SPK which initiates a Twin Mode Link and it may has a connection with a remote device such as a phone
at the same time.
2.7 Twin Slave
Twin Slave is an n-SPK as the slave role of Twin Mode Link, waiting for Twin Master to establish a Twin Mode Link. When an n-
SPK is the role of Twin Slave, it can’t have a connection with a remote device.
2.8 Twin Speaker Pairing
Twin Speaker Pairing is the process of a Twin Master try to pair and create a connection with a Twin Slave.

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3. TOOL OVERVIEW
There are three parts in UI configuration tool; Start Menu, Main Features and Function Settings, will be introduced in the
following sections.
3.1 Start Menu Page
After launching this tool, first view you see is Start Menu. It consists of two blocks, information block and operation block as
Figure 3.1
Figure 3-1 Start Menu Page
3.1.1 Operation
3.1.1.1 Load
Load an UI parameter table. Before doing anything in this tool, loading an UI parameter table is must.
3.1.1.2 Edit
Start to edit parameters. This button is disabled before loading a valid UI parameter table.
3.1.1.3 Save
Save as a UI parameter table.
3.1.1.4 Export
Export the UI settings by the text.
3.1.1.5 PICS Generator
Generate PICS settings upon UI parameters to provide customers a reference in PTS test. PTS (Profile Tuning Suite) test is one
of mandatory processes in Bluetooth qualification.
3.1.1.6 Exit
Exit the UI configuration tool.

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3.1.2 Information Block
3.1.2.1 IC Package
Display the IC package.
3.1.2.2 Module Name
Display the Module name if it has.
3.2 Main Features Page
When you start to edit UI parameters, you will see Main Features page as Figure 3.2. At first, this page lists some main features
and shows the settings of the loaded UI parameter table. Then you can modify it to achieve what you want.
There is one thing need to pay attention. Some I/O pins may be configurable to perform different features, they are called multi-
function pins. In the configuration, one multi-function pin should be map to only one feature. To avoid that several features may
use the same pin, if a pin is occupied by a feature, the other features using the same pin will be unchecked and disabled
automatically. Below it will have a brief for the features in this page.
Figure 3.2 Main Features
3.2.1 Supported Profiles
Determine that the product supports which Bluetooth profiles.

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3.2.1.1 HFP(Hands-free Profile)
Support voice input/output and some call operations.
3.2.1.2 A2DP(Advanced Audio Distribution Profile)
Support audio output..
3.2.1.3 AVRCP(Audio/Video Remote Control Profile)
Support audio remote control.
AVRCP Controller
Support controlling the music players of remote devices such as play/pause, forward and rewind. All supported controls
can be triggered by buttons of an n-SPK upon the settings of button events.
AVRCP Target
Support volume synchronization with music players of remote devices. When users adjust volume of music on remote
devices, remote devices will send controls to n-SPKs to synchronize volume.
3.2.2 Buttons
Determine that the product uses which buttons.
3.2.2.1 Btn0(MFB)
Support the MFB key.
3.2.2.2 Btn1 (P0_2)
Support the Btn1 key that occupies P0_2.
3.2.2.3 Btn2 (P0_1)
Support the Btn2 key that occupies P0_1.
3.2.2.4 Btn3 (P1_6)
Support the Btn3 key that occupies P1_6.
3.2.2.5 Btn4 (P3_7)
Support the Btn4 key that occupies P3_7.
3.2.2.6 Btn5(P0_5)
Support the Btn5 key that occupies P0_5.
3.2.2.7 Btn6(P3_5)
Support the Btn6 key that occupies P3_5.

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3.2.3 Power On Enter Twin Mode Pairing Setting
For twin mode pairing setting, n-SPK can be set to stay one of predefined modes when it is turned on. These predefined modes
are described as below
3.2.3.1 Single Mode
Enter Single Mode after n-SPK is turned on.
3.2.3.2 Back To Last Mode
After n-SPK is turned on, it enters into the last mode which n-SPK stayed before powering off. For example, if n-SPK is in the
Single Mode before it is powered off, it will enter into Single Mode in next powering on.
3.2.3.3 Intelligent Twin Pairing
When n-SPK is powered on, it enters Twin Mode Pairing and tries to discover a matched n-SPK to create a connection upon the
presetting group code. The roles of Twin Master and Twin Slave are determined by automatic negotiation between the two
matched n-SPKs.
3.2.3.4 Factory Paired
Two n-SPKs are pre-paired and assigned the roles of Twin Master and Twin Slave in production. These two n-SPKs will try to
establish the connection after they are powered on.
3.2.3.5 Switch Control
There are two pins which are P2_4 and P3_0 determine the behavior of n-SPK. The corresponding roles of these two pins are
mutually exclusive and could be configured to be Twin Master or Twin Slave. That is, if P3_0 is set to Twin Master, P2_4 must
be Twin Slave. Base on above configuration, If P3_0 is pulled to high when n-SPK is powered on, n-SPK will enter Twin Mode
Pairing as Twin Master. And it will be Twin Slave if P2_4 is pulled to high. If P3_0 and P2_4 are both pulled to low, n-SPK will
enter Single Mode when it is powered on.
3.2.3.6 Always Twin Pairing Entry(With Twin Paired Record)
If n-SPK has paired records of Twin Mode Pairing, it enters Twin Mode Pairing when it is powered on else it enters Single Mode
3.2.4 Other Features
3.2.4.1 Slide Switch(P3_4)
This configuration determines that the product is turned on and turned off by slide switch with the pin P3_4.
3.2.4.2 Aux Line-in
Support Aux-in function as audio input by an Aux-in wire.
3.2.4.3 NFC Detection(P0_4)
Support NFC (Near Field Communication) function with the pin P0_4. It can achieve automatic Bluetooth connection and
disconnection upon APPs design on remote devices when NFC function is triggered.

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3.2.4.4 External Amplifier(P0_0)
Support to indicate that audio outputs with an external amplifier by the pin P0_0.
3.3 Function Settings Page
=>
Pressing the Next button on Main Features described above will pop up Function Settings page. Function Settings provides
more detailed configurations. The settings of Main Features will affect some parameters on Function settings page. Base on the
settings of Main Features, some detailed configurations may be fixed or reduce selections. For example, once a profile is
disabled in the configuration of supported features, all settings related to this profile will be canceled.
And there is a button in bottom left corner that can back to Main Features if something need to change. When the editing was
done, pressing the Finish button in bottom right corner to back to Start Menu described above. Then you can save the editing
as a UI parameter table.
There are so many parameters in Function Settings page you can get more information in the next chapter. Function Settings
3.4 Power Switch Setting
The power switch configuration has four types and determines which pattern is used in n-SPK. These four types are listed as
below.
3.2.1 MFB Power ON/OFF
Turning on and turning off n-SPK depends on the duration of pressing MFB button. The related settings are Power On Duration
and Power Off Duration. That is, if users keep pressing MFB key over the configurable time, n-SPK will be turned on or turned
off. Please refer to 4.9.1 Button Press Duration for more information.

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Figure 3.3 MFB Power ON/OFF reference circuit
3.2.2 Power On Directly
The n-SPK is controlled directly by power source. When n-SPK connects to power source such as a battery and a plus to MFB
Pin, it is on, otherwise it is off.
Figure 3.4 Power On Directly reference circuit
Note: CKT is circuit.
3.2.3 Slide Switch
The n-SPK is controlled by a hardware slide switch with the pin P3_4.
SW1 TVBM17
21
IS1690S
U1
VDDAO
1
AOHPM
2
VSSAO
3
AOHPL
4
VDDA
5
VSSA
6
VCOM
7
MICP1
8
MICN1
9
MIC_BIAS
10
VDD_IO
13
RST_N
14
P1_2
15
P1_3
16
CODEC_VO
21
3V1_IN
22
ADAP_IN
23
BAT_IN
24
SAR_VDD
26
SYS_PWR
27
BK_VDD
28
BK_LX 29
XO_N 42
XO_P 41
VDD_IO 40
HCI_RXD 38
HCI_TXD 37
1V8
19
P0_5 36
P0_2 35
P2_4 34
LED2 33
LED1 32
MFB 31
BK_OUT 30
AOHPR 56
1V8 55
EAN 54
VDD_IO 52
P0_0 50 P2_0 49 P3_0 48 P0_3 47 P0_1 46
RTX 45
VCC_RF 43
P3_5 53
3V1_O
20
GND 57
AIR
11
AIL
12
SK1
25
P1_6 39
RX_CLS1 44
P0_4 51
P3_4
17
P3_7
18
SYS_PWR
R5
1K
1
2
MFB
C20
1u/6.3V
BAT_IN
SW1 TVBM17
21
SYS_PWR
FP1 FP-BM90SPKA6
P0_1 35
P1_6 34
HCI_RXD 33
HCI_TXD 32
P0_5 31
P3_7
18
P0_2 30
P3_4
17
P2_4 29
LED2 28
LED1 27
MFB 26
GND 37
BK_OUT 25
SYS_PWR 24
P3_5
1
P3_0
3
P2_0
4
P0_0
5
P0_4
6
SPKR
7
SPKL
9
VDDA
10
MIC1_P
11
MIC1_N
12
MIC_BIAS
13
AIR
14
AIL
15
RST
16
SK1
22 ADAP_IN 20
BAT_IN
21
EAN
2P0_3 36
VDD_IO
19
AOHPM
8
GND
23
NC
38
NC
39
NC
40
R5
1K
1
2
MFB
C20
1u/6.3V
BAT_IN
CKT
IS1690S
U1
VDDAO
1
AOHPM
2
VSSAO
3
AOHPL
4
VDDA
5
VSSA
6
VCOM
7
MICP1
8
MICN1
9
MIC_BIAS
10
VDD_IO
13
RST_N
14
P1_2
15
P1_3
16
CODEC_VO
21
3V1_IN
22
ADAP_IN
23
BAT_IN
24
SAR_VDD
26
SYS_PWR
27
BK_VDD
28
BK_LX 29
XO_N 42
XO_P 41
VDD_IO 40
HCI_RXD 38
HCI_TXD 37
1V8
19
P0_5 36
P0_2 35
P2_4 34
LED2 33
LED1 32
MFB 31
BK_OUT 30
AOHPR 56
1V8 55
EAN 54
VDD_IO 52
P0_0 50 P2_0 49
P3_0 48 P0_3 47
P0_1 46
RTX 45
VCC_RF 43
P3_5 53
3V1_O
20
GND 57
AIR
11
AIL
12
SK1
25
P1_6 39
RX_CLS1 44
P0_4 51
P3_4
17
P3_7
18
R5
1K
1
2
MFB
C20
1u/6.3V
BAT_IN
CKT
FP1 FP-BM90SPKA6
P0_1 35
P1_6 34
HCI_RXD 33
HCI_TXD 32
P0_5 31
P3_7
18
P0_2 30
P3_4
17
P2_4 29
LED2 28
LED1 27
MFB 26
GND 37
BK_OUT 25
SYS_PWR 24
P3_5
1
P3_0
3
P2_0
4
P0_0
5
P0_4
6
SPKR
7
SPKL
9
VDDA
10
MIC1_P
11
MIC1_N
12
MIC_BIAS
13
AIR
14
AIL
15
RST
16
SK1
22 ADAP_IN
20
BAT_IN
21
EAN
2P0_3 36
VDD_IO
19
AOHPM
8
GND
23
NC
38
NC
39
NC
40
R5
1K
1
2
MFB
C20
1u/6.3V
BAT_IN

15
Figure 3.5 Slide Switch reference circuit
3.2.4 MFB Fast Power ON/OFF
This type is similar with the first type MFB Power ON/OFF. The difference is the duration of pressing button. Use this pattern
must set the values of Power On Duration and Power Off Duration to zero. When n-SPK detects MFB that is clicked, n-SPK will
be on or off.
Figure 3.6 MFB Fast Power ON/OFF reference circuit
IS1690S
U1
VDDAO
1
AOHPM
2
VSSAO
3
AOHPL
4
VDDA
5
VSSA
6
VCOM
7
MICP1
8
MICN1
9
MIC_BIAS
10
VDD_IO
13
RST_N
14
P1_2
15
P1_3
16
CODEC_VO
21
3V1_IN
22
ADAP_IN
23
BAT_IN
24
SAR_VDD
26
SYS_PWR
27
BK_VDD
28
BK_LX 29
XO_N 42
XO_P 41
VDD_IO 40
HCI_RXD 38
HCI_TXD 37
1V8
19
P0_5 36
P0_2 35
P2_4 34
LED2 33
LED1 32
MFB 31
BK_OUT 30
AOHPR 56
1V8 55
EAN 54
VDD_IO 52
P0_0 50 P2_0 49 P3_0 48 P0_3 47 P0_1 46
RTX 45
VCC_RF 43
P3_5 53
3V1_O
20
GND 57
AIR
11
AIL
12
SK1
25
P1_6 39
RX_CLS1 44
P0_4 51
P3_4
17
P3_7
18
R5
1K
1
2
MFB
C20
1u/6.3V
C17
1u/10V
P3_4
SW3
TVBM17
21
GD
S
Q9
STS2301
1
3
2SLIDE_SW
R21
100K
1 2
R36
10K
1
2
Q10
STS2306
3
1 2
R37
100K
1
2
SYS_PWR
SW6
SW-1BIT
12
VDD_IO
C57
1u/16V
P3_4
BAT_IN
SYS_PWR
VDD_IO
FP1 FP-BM90SPKA6
P0_1 35
P1_6 34
HCI_RXD 33
HCI_TXD 32
P0_5 31
P3_7
18
P0_2 30
P3_4
17
P2_4 29
LED2 28
LED1 27
MFB 26
GND 37
BK_OUT 25
SYS_PWR 24
P3_5
1
P3_0
3
P2_0
4
P0_0
5
P0_4
6
SPKR
7
SPKL
9
VDDA
10
MIC1_P
11
MIC1_N
12
MIC_BIAS
13
AIR
14
AIL
15
RST
16
SK1
22 ADAP_IN 20
BAT_IN
21
EAN
2P0_3 36
VDD_IO
19
AOHPM
8
GND
23
NC
38
NC
39
NC
40
R5
1K
1
2
MFB
C20
1u/6.3V
C17
1u/10V
P3_4
SW3
TVBM17
21
GD
S
Q9
STS2301
1
3
2SLIDE_SW
R21
100K
1 2
R36
10K
1
2
Q10
STS2306
3
1 2
R37
100K
1
2
SYS_PWR
SW6
SW-1BIT
12
VDD_IO
C57
1u/16V
P3_4
BAT_IN
SYS_PWR
VDD_IO
SW1 TVBM17
21
IS1690S
U1
VDDAO
1
AOHPM
2
VSSAO
3
AOHPL
4
VDDA
5
VSSA
6
VCOM
7
MICP1
8
MICN1
9
MIC_BIAS
10
VDD_IO
13
RST_N
14
P1_2
15
P1_3
16
CODEC_VO
21
3V1_IN
22
ADAP_IN
23
BAT_IN
24
SAR_VDD
26
SYS_PWR
27
BK_VDD
28
BK_LX 29
XO_N 42
XO_P 41
VDD_IO 40
HCI_RXD 38
HCI_TXD 37
1V8
19
P0_5 36
P0_2 35
P2_4 34
LED2 33
LED1 32
MFB 31
BK_OUT 30
AOHPR 56
1V8 55
EAN 54
VDD_IO 52
P0_0 50 P2_0 49 P3_0 48 P0_3 47 P0_1 46
RTX 45
VCC_RF 43
P3_5 53
3V1_O
20
GND 57
AIR
11
AIL
12
SK1
25
P1_6 39
RX_CLS1 44
P0_4 51
P3_4
17
P3_7
18
SYS_PWR
R5
1K
1
2
MFB
C20
1u/6.3V
BAT_IN
SW1 TVBM17
21
SYS_PWR
FP1 FP-BM90SPKA6
P0_1 35
P1_6 34
HCI_RXD 33
HCI_TXD 32
P0_5 31
P3_7
18
P0_2 30
P3_4
17
P2_4 29
LED2 28
LED1 27
MFB 26
GND 37
BK_OUT 25
SYS_PWR 24
P3_5
1
P3_0
3
P2_0
4
P0_0
5
P0_4
6
SPKR
7
SPKL
9
VDDA
10
MIC1_P
11
MIC1_N
12
MIC_BIAS
13
AIR
14
AIL
15
RST
16
SK1
22 ADAP_IN 20
BAT_IN
21
EAN
2P0_3 36
VDD_IO
19
AOHPM
8
GND
23
NC
38
NC
39
NC
40
R5
1K
1
2
MFB
C20
1u/6.3V
BAT_IN

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3.5 NFC Setting
The n-SPK offers a convenient way to establish and terminate Bluetooth connection by NFC. To get the benefits, n-SPK must
have an NFC tag with its Bluetooth address and some related information and remote devices need to support the NFC feature.
The remote device just touch the NFC tag of n-SPK, it will get the information of n-SPK, and APPs on the remote device may
deal with Bluetooth connection or something. It reduces much bother of Bluetooth operation, especially for some persons who
aren’t similar with that. The related settings are described as below.
3.5.1 NFC Detection Enable
Configure whether NFC is enabled. If NFC function is enabled, the NFC tag with the NFC detection circuit is must.
3.5.2 NFC Stable Time
It’s the judging time of a valid NFC signal. When the remote device touches the NFC tag of n-SPK, if NFC signal is stable over
this time, it determines that the NFC function of n-SPK is triggered successfully. Else n-SPK will ignore the signal as noise.
Figure 3.7 NFC reference circuit, NFC tag connect to TP2, TP3.
3.6 Factory Volume Level (For Master Reset Usage)
When n-SPK is master reset, the volume will be set to the default value.
3.6.2 Audio Volume Level(Music)
The default value for the volume of music.
3.6.3 Voice Volume Level(SCO)
The default value for the volume of voice.
3.7 Connection Setting
The n-SPK could establish Bluetooth connection with a remote device. The configurations listed below control the behavior
regarding Bluetooth connection.
NFC
SYS_PWR
P0_4
Q2
STS2306
3
1 2
R16
1M
1
2
G D
S
Q1
STS2301
13
2
D3
21
D4
CDSU400B
1 2
D6
CDSU400B
1 2
R12
120/1%
1 2
R14
270/1%
1 2
R13
1K
1
2
R15
NP-0805
TP3
1
TP2
1
MFB
For NXP 203F NFC type,
which build-in rectifier circuit
MFB
P0_4

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3.7.1 Maximum Paired Device
Determine the number of paired devices that can stored in n-SPK. It is eight at most.
3.7.2 Link Back Scheme
The scheme of reconnection is to connect to the last device which is the highest priority or the paired devices with priority-based.
3.7.3 Pairing Mode Duration
The configuration is the duration that n-SPK is discoverable. During this period, other devices can discover and pair to it. If no
device pairs to n-SPK successfully in this period, n-SPK will leave Pairing Mode.
3.7.4 Infinite Pairing Mode Duration if No Paired Record
When n-SPK has no paired device record, it keeps being discoverable. If this setting is enabled, above Pairing Mode Duration
setting will be ignored.
3.7.5 Link Loss Reconnection Duration
When n-SPK loses Bluetooth connection with a remote device abnormally, it will try to link back to the remote device until the
duration reaches this value.
3.7.6 Link Back When Power On
This setting determines if n-SPK tries to reconnect to a paired remote device when it is turned on.
3.7.7 Link Specific Profile When Power On
Assign a target to reconnect to when n-SPK is turned on. The target may be the last disconnected device or a paired device
with the specific profile.
3.7.8 Link HS Duration
The setting is the duration trying to reconnect to the remote device with HF profile.
3.7.9 Link A2DP Duration
The setting is the duration trying to reconnect to the remote device with A2DP profile.
3.8 LED Setting
There are two LEDs named LED1 and LED2 in n-SPK. They indicate what the current state is to users. The flash pattern of LED
for every defined state could be configured. The defined state and related configuration are listed as below.
3.8.1 LED FLASH Parameters
In this section, the XXX represents one of the supported states described in next section.
3.8.1.1 XXX LED Type
The setting is the displayed pattern of XXX state. Below lists all supported types.
Type0
LED1 and LED2 are always blind.

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Type1
LED1 and LED2 are always bright.
Type2
LED1 is always bright and LED2 is always blind.
Type3
LED1 is always blind and LED2 is always bright.
Type4
LED1 is always blind.
LED2 is twinkling.
Type5
LED1 is twinkling.
LED2 is always blind.
Type6
LED1 is always bright.
LED2 is twinkling.
Type7
LED1 is twinkling.
LED2 is always bright.
Type8
LED1 and LED2 are twinkling simultaneously.
Type9
LED1 and LED2 are twinkling alternately.
3.8.1.2 XXX LED On Duration
The bright duration for twinkling LED.
3.8.1.3 XXX LED Off Duration
The blind duration for twinkling LED.
3.8.1.4 XXX LED Interval
The configuration is for the interval of a round.
3.8.1.5 XXX LED Count
The configuration is for the LED flash times in a round.
Notice that the value of XXX LED Interval must be more than (XXX LED On Duration + XXX LED Off Duration) * (XXX LED
Count).
3.8.1.6 LED1 brightness
Configure the brightness of LED1.

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3.8.1.7 LED2 brightness
Configure the brightness of LED2.
3.8.2 Defined LED State
This section lists all states that n-SPK indicates by LED.
3.8.2.1 Power On LED Flash Setting
This LED setting is displayed when n-SPK is turned on.
3.8.2.2 Power Off LED Flash Setting
This LED setting is displayed when n-SPK is turned off.
3.8.2.3 Pairing LED Flash Setting
This LED setting is displayed when n-SPK is in Pairing Mode.
3.8.2.4 Pairing OK LED Flash Setting
This LED setting is displayed when n-SPK is paired with a remote device successfully.
3.8.2.5 Link LED Flash Setting
This LED setting is displayed if n-SPK has a Bluetooth connection with a remote device.
3.8.2.6 Standby LED Flash Setting
This LED setting is displayed if n-SPK doesn’t have any Bluetooth connection.
3.8.2.7 Low Battery Disallow Power On LED Flash Setting
This LED setting is displayed n-SPK is tried to turn on under low battery mode but it is disallowed.
3.8.2.8 Twin Mode Pairing Master LED Flash Setting
This LED setting is displayed if n-SPK is Twin Master in Twin Mode Pairing state.
3.8.2.9 Twin Mode Pairing Slave LED Flash Setting
This LED setting is displayed if n-SPK is Twin Slave role in Twin Mode Pairing state.
3.8.2.10 Twin Master With BT Connected LED Flash Setting
This LED setting is displayed if n-SPK as Twin Master has a Twin Mode Link and a Bluetooth connection with a remote device.
3.8.2.11 Twin Master With BT Pairing LED Flash Setting
This LED setting is displayed if n-SPK as Twin Master has a Twin Mode Link and is in Pairing Mode.
3.8.2.12 Twin Master With BT Link Back LED Flash Setting
This LED setting is displayed if n-SPK as Twin Master has a Twin Mode Link and is trying to reconnect to a remote device.
3.8.2.13 Twin Master With BT Standby LED Flash Setting
This LED setting is displayed if n-SPK as Twin Master has a Twin Mode Link and has no Bluetooth connection with a remote

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device.
3.8.2.14 Twin Slave LED Flash Setting
This LED setting is displayed if n-SPK is Twin Slave role in an existing Twin Mode Link.
3.8.2.15 Incoming Call LED Flash Setting
The LED setting is displayed when n-SPK receives an incoming call.
3.8.2.16 Talk LED Flash Setting
This LED setting is displayed when n-SPK has an active call.
3.8.2.17 AV LED Flash Setting
This LED setting is displayed if n-SPK is playing music.
3.8.2.18 Low Battery LED Flash Setting
The LED setting is displayed periodically if the battery voltage of n-SPK is low. The settings related to battery detection may
refer to 4.6 Battery Detection Setting.
3.8.2.19 Link Back LED Flash Setting
This LED setting is displayed when n-SPK is trying to reconnect to a remote device.
3.8.2.20 Min and Max Volume LED Flash Setting
This LED setting is displayed if increasing the volume of n-SPK that has reached maximum volume and vice versa.
3.8.2.21 Mic Mute LED Flash Setting
This LED setting is displayed if the microphone of n-SPK is muted.
3.8.3 Charging LED Setting
This section describes the LED settings for charging states. There is an optional indicator LED3 accomplished by a pin to
indicate charging complete.
3.8.3.1 Charging LED Option
There are two options listed as below to indicate charging state by LED2.
LED2 is not affected. That is, it has no indicator for charging state.
LED2 is bright.
3.8.3.2 Charging Error LED Option
If a fault occurs when charging, the setting determines how to indicate the error..
Use the same setting with above Charging LED Option.
LED1 is always blind and LED2 flashes.