Fibocom NL668-LA Instructions for use

69100.1000.00.02.61.34_DEMO"
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FIBOCOM NL668-LA Series HardwareUser Manual Page 1 of 65
FIBOCOM NL668-LA HardwareUser
Manual
Version: V1.0.0
Date: 2019-06-06

Applicability type
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No.
Product model
Description
1
NL668-LA
MCP is 4+2，support MAIN_ANT, DIV_ANT, GNSS_ANT

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Copyright
Copyright ©2019 Fibocom Wireless Inc. All rights reserved.
Without the prior written permission of the copyright holder, any company or individual is prohibited to
excerpt, copy any part of or the entire document, or transmit the document in any form.
Notice
The document is subject to update from time to time owing to the product version upgrade or other
reasons. Unless otherwise specified, the document only serves as the user guide. All the statements,
information and suggestions contained in the document do not constitute any explicit or implicit
guarantee.
Trademark
The trademark is registered and owned by Fibocom WirelessInc.
Versions Record
Version
Author
Assessor
Approver
Update Date
Description
V1.0.0
Gaoying
Tumin
Chenguojiang
2019-06-06
Initial version

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Content
Content ................................................................................................................................................4
Figure Index........................................................................................................................................7
Table Index..........................................................................................................................................8
1 Introduction.................................................................................................................................. 10
1.1 Document Introduction.....................................................................................................................10
1.2 Safety precautions............................................................................................................................10
2 Product Overview....................................................................................................................... 12
2.1 Product Introduction.........................................................................................................................12
2.2 Product Specification.......................................................................................................................12
2.3 Functional..........................................................................................................................................13
2.4 Evaluation Board ..............................................................................................................................14
3 Pin Description............................................................................................................................ 15
3.1 Pin Assignment.................................................................................................................................15
3.2 Pin function........................................................................................................................................15
4 Electrical characteristics.......................................................................................................... 23
4.1 Power .................................................................................................................................................23
4.2 Power supply.....................................................................................................................................23
4.3 1.8V output........................................................................................................................................24
4.4 Power consumption..........................................................................................................................25
5 Functional interface................................................................................................................... 28
5.1 Control interface ...............................................................................................................................28
5.1.1 Power on/off...................................................................................................................................28
5.1.2 RESET............................................................................................................................................30
5.2 Network status indicate interface...................................................................................................32
5.2.1 Interface status description..........................................................................................................32
5.3 (U)SIM card interface.......................................................................................................................33
5.3.1 (U)SIM pin definition.....................................................................................................................33
5.3.2 (U)SIM interface circuit.................................................................................................................34
5.3.3 (U)SIM hot plug.............................................................................................................................35
5.3.4 (U)SIM design requirements .......................................................................................................36
5.4 USB interface....................................................................................................................................37

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5.4.1 USB Pin definition.........................................................................................................................37
5.5 UART Interface.................................................................................................................................37
5.5.1 UART interface definition.............................................................................................................37
5.5.2 UART port application..................................................................................................................38
5.6 ADC interface....................................................................................................................................39
5.7 PCM interface ...................................................................................................................................39
5.7.1 Support model...............................................................................................................................39
5.7.2 PCM interface definition...............................................................................................................40
5.7.3 PCM interface description............................................................................................................40
5.7.4 PCM signal description ................................................................................................................40
6 Low power consumption.......................................................................................................... 42
6.1 Airplane mode...................................................................................................................................42
6.2 Sleep mode .......................................................................................................................................42
6.2.1 USB Application （ nonsupport USB suspend, support VBUS ） ................................................42
6.2.2 USB application (nonsupport USB suspend, nonsupport VBUS)..........................................43
6.2.3 USB application (Supports USB Suspend)...............................................................................43
6.2.4 UART application ( WAKEUP_IN pin level control )................................................................43
6.2.5 UART application ( DTR pin level control )...............................................................................44
6.2.6 ATS24 Command..........................................................................................................................44
7 RF interface.................................................................................................................................. 46
7.1 Operating band.................................................................................................................................46
7.2 Output power.....................................................................................................................................46
7.3 Receive Sensitivity...........................................................................................................................47
7.4 GNSS Receiver.................................................................................................................................49
7.4.1 GNSS specification.......................................................................................................................49
7.4.2 GNSS observes protocol.............................................................................................................49
7.5 Antenna design.................................................................................................................................49
7.5.1 Antenna index................................................................................................................................49
7.5.2 Antenna reference design............................................................................................................51
8 Reliability...................................................................................................................................... 54
8.1 Limiting voltage range......................................................................................................................54
8.1.1 Absolute voltage range.................................................................................................................54
8.1.2 Operating voltage range ..............................................................................................................54
8.2 Environment temperature range ....................................................................................................54

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8.3 Environmental reliability requirements.......................................................................................... 55
8.4 ESD characteristics..........................................................................................................................55
9 Structure specification.............................................................................................................. 57
9.1 Product appearance.........................................................................................................................57
9.2 Structure dimension.........................................................................................................................57
9.3 PCB Soldering Pad and Stencil Design........................................................................................ 58
9.4 SMT....................................................................................................................................................58
9.5 Carrier and storage ..........................................................................................................................58
10 Approval...................................................................................................................................... 59
11 Appendix..................................................................................................................................... 60
11.1GPRS and EGPRS Encoding Scheme.......................................................................................60
11.2Terms and acronyms......................................................................................................................62
11.3Related Document.......................................................................................................................... 64
11.4Reference Standards.....................................................................................................................64
11.5Contact.............................................................................................................................................65

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Figure Index
Figure 3-1 Pin Assignment (TopView Diagram).....................................................................................15
Figure 4-1 Recommend Power Design....................................................................................................23
Figure 4-2 Power Limit................................................................................................................................24
Figure 5-1 OC Drive Power on Reference Circuit..................................................................................28
Figure 5-2 Button Switch Power on Reference Circuit ..........................................................................29
Figure 5-3 Power on Timing.......................................................................................................................29
Figure 5-4 Power off Timing.......................................................................................................................30
Figure 5-5 OC Driven Reset Reference Circuits.....................................................................................31
Figure 5-6 Button Reset Reference Circuits............................................................................................31
Figure 5-7 Reset Timing.............................................................................................................................32
Figure 5-8 Network Indicate Light Reference Circuits...........................................................................33
Figure 5-9 (U)SIM Card Connector (SIM016-8P-220P) ........................................................................34
Figure 5-10 (U)SIM Card Connector with Detection Signal Reference Circuit ..................................35
Figure 5-11 (U)SIM Card Connector without Detection Signal Reference Circuit.............................35
Figure 5-12 UART Level Translate Reference 1 ....................................................................................38
Figure 5-13 UART Level Translate Reference 2 ....................................................................................39
Figure 5-14 PCM_SYNC Timing...............................................................................................................40
Figure 5-15 PCM_CODEC to NL668-LATiming.....................................................................................41
Figure 5-16 NL668-LA toPCM_CODEC Timing.....................................................................................41
Figure 7-1 Main and diversity AntennaReference Circuit.....................................................................52
Figure 7-2 GNSS Antenna Reference Circuit..........................................................................................52
Figure 9-1 Product Appearance ................................................................................................................57
Figure 9-2 Structure Dimension (Unit: mm).............................................................................................57

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Table Index
Table 2-1 Product Specification.................................................................................................................13
Table 3-1 I/O Description Parameters......................................................................................................16
Table 3-2 Pin function description.............................................................................................................21
Table 4-1 Power Interface..........................................................................................................................23
Table 4-2 Filter Capacitors Design of Power Supply .............................................................................24
Table 4-3 VDD_EXT Logic Level...............................................................................................................25
Table 4-4 Power Consumption..................................................................................................................27
Table 5-1 Control Signal.............................................................................................................................28
Table 5-2 Power off.....................................................................................................................................30
Table 5-3 Reset............................................................................................................................................30
Table 5-4 Network Status Indicate............................................................................................................32
Table 5-5 Network Indicate Light Work Status........................................................................................33
Table 5-6 (U)SIM Card Pin.........................................................................................................................33
Table 5-7 (U)SIM Card Hot Plug Function Configured..........................................................................36
Table 5-8 USIM_PRESENCE Effective Level Switched........................................................................36
Table 5-9 USB Pin Definition.....................................................................................................................37
Table 5-10 Main Serial Port........................................................................................................................38
Table 5-11 Debug Serial Port.....................................................................................................................38
Table 5-12 ADC Pin Definitation................................................................................................................39
Table 5-13 Support Model of PCM............................................................................................................39
Table 5-14 PCM Pin Definition ..................................................................................................................40
Table 5-15 PCM Interface Description......................................................................................................40
Table 5-16 Codec Timing Parameters......................................................................................................41
Table 6-1 W_DISABLE# Pin Description.................................................................................................42
Table 6-2 Module Enter Airplane Mode Ways..............................................................................................42
Table 7-1 RF Interface................................................................................................................................46
Table 7-2 Operating Band..........................................................................................................................46
Table 7-3 Output Power..............................................................................................................................47
Table 7-4 Receive Sensitivity.....................................................................................................................48
Table 7-5 GNSS Specification...................................................................................................................49
Table 7-6 Main Antenna Requirements....................................................................................................51
Table 8- 1 Absolute Voltage Range...........................................................................................................54

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Table 8-2 Operating Voltage Range.........................................................................................................54
Table 8-3 Environment Temperature Range...........................................................................................55
Table 8-4 Environmental Reliability Requirements.................................................................................55
Table 8-5 ESD Allowable Discharge Range............................................................................................56
Table 10-1 Approval ....................................................................................................................................59
Table 11-1 GPRS Encoding Scheme........................................................................................................60
Table 11-2 Multilevel Multislot Allocation..................................................................................................61
Table 11-3 EGPRS Modulation and Encoding Method........................................................................61
Table 11-4 Terms and Acronyms...............................................................................................................64

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1 Introduction
1.1 Document Introduction
This document describes the electrical characteristics, RF performance, structure size, application
environment, etc. of NL668-LA module. With the assistance of the document and other instructions, the
developers can quickly understand the hardware functions of the NL668-LA module and develop
products.
1.2 Safety precautions
By following the safety guidelines below,you can protect the personal safety and help protect the product
and work environment from potential damage. Product manufacturers need to communicate the
following safety instructions to end users. In case of failure to comply with these safety rules, Fibocom
Wireless will not be responsible for the consequences caused by the user’s misuse.
Road safety first! When you drive, do not use the handheld devices even if it has a
hand-free feature. Please stop and call!
Please turn off the mobile device before boarding. The wireless feature of the mobile
device is not allowed on the aircraft to prevent interference with the aircraft
communication system. Ignoring this note may result in flight safety issue or even
breaking the law.
When in a hospital or health care facility, please be aware of restrictions on the use of
mobile devices. Radio frequency interference may cause medical equipment to
malfunction, so it may be necessary to turn off the mobile device.
The mobile device does not guarantee that an effective connection can be madeunder
any circumstances, for example, when there is no prepayment for the mobile device or
the (U)SIM is invalid. When you encounter the above situation in an emergency,
remember to use an emergency call, while keeping your device turned on and in areas
where signal is strong.
Your mobile device receives and transmits RF signals when it is powered on. Radio
interference occurs when it is near televisions, radios, computers, or other electronic
devices.

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Keep the mobile device away from flammable gases. Turn off the mobile device when
near gas stations, oil depots, chemical plants or explosive workplaces. There is a
safety hazard in operating electronic equipment in any potentially explosive
environment.

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2 Product Overview
2.1 Product Introduction
The NL668-LA series wireless module is a broadband wireless terminal product applicable to various
network formats and multi-bands include TDD-LTE /FDD-LTE /WCDMA /GSM.
2.2 Product Specification
Specification
Operating frequency
LTE FDD: Band 1,2,3,4,5,7,8,12,17,28,66
LTE TDD: Band 38,40
WCDMA/HSPA+: Band 1,2,3,4,5,8
GSM/GPRS/EDGE: 850/900/1800/1900MHz
Data transmission
LTE FDD Rel.9
150Mbps DL/50Mbps UL (Cat 4) LTE Downlink MIMO
2×2,4×2 (support part of R10)
LTE TDD Rel.9
130Mbps DL/30.5Mbps UL (Cat 4) LTE Downlink MIMO
2×2,4×2 (support part of R10)
WCDMA Rel.8
UMTS:384 kbps DL/384 kbps UL
DC-HSDPA+:42MbpsDL (Cat24)/HSUPA:5.76Mbps UL
(Cat 6)
GPRS/EDGE
Rel.5
GPRS:107kbps DL/85.6kbps UL (multi-slot class 33)
EDGE(E-GPRS):296kbps DL/236.8kbps UL (multi-slot
class 33)
Power
3.3V～4.3V (3.8V recommended)
Temperature
Normal: -30°C～+75°C
Extended:-40°C～+85°C
Storage:-40°C～+90°C
Power consumption
Base current: <2mA
Sleep mode: ≤4mA
Idle mode: <20mA (USB sleep), <30mA (USB wakeup)
Physical characteristics
Package: LCC+LGA 144 Pin
Size: (32.0±0.15) mm×(29.0±0.15) mm×(3.2±0.2) mm
Weight: About 5.2g

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Interface
Antenna
Antenna: Main, GNSS, DIV
Functional Interface
(U)SIM 3.0V/1.8V
USB 2.0
Status Indicator
UART x 2, PCM, I2C, SGMII, SPI, SDIO, GPIOs
ADC x 2
Software
Protocol Stack
Embedded TCP/IP and UDP/IP protocol stack
AT Command
3GPP TS 27.007 and 27.005, and proprietary FIBOCOM AT
Firmware update
USB (UART does not support DOWNLOAD)
Voice service
VoLTE, HR, FR, EFR, AMR, DTMF, Caller ID, Call Transfer, Call Hold, Call
Waiting and Multi-Talk, etc.
SMS
point-to-point MO, MT; cell broadcast; support Text and PDU modes
Table 2- 1 Product Specification
Note:
When the temperature is beyond the normal operating temperature range (-30 °C to + 75 °C),
the RF performance of the module may slightly exceed the 3GPP specification.
2.3 Functional
Functional of the NL668-LA series module, including baseband and RF features.
Baseband includes:
 PMIC
 MCP
 USB, (U)SIM, PCM, I2C, SPI, UART, SGMII, SDIO,GPIOs
 GSM/CDMA/EVDO/WCDMA/TD-SCDMA/LTETDD/LTEFDD controller
RF includes:
 RFTransceiver
 RF PA
 RF filter
 Antenna

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2.4 Evaluation Board
Fibocom provide EVK-GT8230-NL, ADP-NL668-LA evaluation board to convenient module's debug and
use.

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3 Pin Description
3.1 Pin Assignment
The NL668-LA series module is available in 144 pins. The numbers of the LCC pins are 80, and the LGA
pins are 64. the top view of the pin assignment is shown as follow figure:
Figure 3- 1 Pin Assignment (Top View Diagram)
Note: “85 ~112” is the thermal pin, and the module is grounded internally. It is recommended that the
heat sink pad is reserved for PCB packaging and welded.
3.2 Pin function
Symbol
Description
IO
Input/Output
DI
Digital input

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Symbol
Description
DO
Digital output
PI
Power input
PO
Power output
AI
Analog input
AO
Analog output
OD
Open drain
OC
Open collector
Table 3- 1 I/O Description Parameters
The pin function description of NL668-LA series module is shown as table 3-2:
Pin Num
Pin Name
I/O
Level
Description
1
WAKEUP_IN
I
VILmin=-0.3V
VILmax=0.6V
VIHmin=1.2V
V IH max=2.0V
External device wake-up module, low
active by default. with software
programmable option
2
AP_READY
I
VILmin=-0.3V
VILmax=0.6V
VIHmin=1.2V
V IH max=2.0V
Reserved
3
RESERVED
-
-
Reserved
4
W_DISABLE#
I
VILmin=-0.3V
VILmax=0.6V
VIHmin=1.2V
V IH max=2.0V
Module flight mode control. pull up by
default. Pull down this pin, module enter
airplane mode
5
NET_MODE
O
V OL max=0.45V
VOHmin=1.35V
Module network state indicate (by default)
6
NET_STATUS
O
V OL max=0.45V
VOHmin=1.35V
Module network state indicate
7
VDD_EXT
PO
1.8V
Module digital level, 1.8V output, 80mA
8
GND
G
-
Ground
9
GND
G
-
Ground
10
GND
G
-
Ground
11
DBG_RXD
I
VILmin=-0.3V
Debug serial port receive data

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Pin Num
Pin Name
I/O
Level
Description
VILmax=0.6V
VIHmin=1.2V
V IH max=2.0V
12
DBG_TXD
O
V OL max=0.45V
VOHmin=1.35V
Debug serial port transmit data
13
USIM_PRESENCE
I
VILmin=-0.3V
VILmax=0.6V
VIHmin=1.2V
V IH max=2.0V
(U)SIM card hot plug detection
14
USIM_VDD
PO
For 1.8V (U)SIM:
Vmax=1.9V
Vmin=1.7V
For 3.0V (U)SIM:
Vmax=3.05V
Vmin=2.7V
IOmax=50mA
(U)SIM power, identify 1.8V or 3V (U)SIM
card automatically
15
USIM_DATA
IO
For 1.8V (U)SIM:
VILmax=0.6V
VIHmin=1.2V
VOLmax=0.45V
VOHmin=1.35V
For 3.0V (U)SIM:
VILmax=1.0V
VIHmin=1.95V
VOLmax=0.45V
VOHmin=2.55V
(U)SIM data signal
16
USIM_CLK
O
For 1.8V (U)SIM:
VOLmax=0.45V
VOHmin=1.35V
For 3.0V (U)SIM:
VOLmax=0.45V
VOHmin=2.55V
(U)SIM clock signal
17
USIM_RST
O
For 1.8V (U)SIM:
VOLmax=0.45V
VOHmin=1.35V
For 3.0V (U)SIM:
VOLmax=0.45V
(U)SIM reset signal

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Pin Num
Pin Name
I/O
Level
Description
VOHmin=2.55V
18
NC
-
-
NC
19
GND
G
-
Ground
20
RESET_N
I
V IH max=2.1V
VIHmin=1.3V
VILmax=0.5V
Module reset signal, active low, no need
pull up externally
21
PWRKEY
I
V IH max=2.1V
VIHmin=1.3V
VILmax=0.5V
Module power on/off signal, active low, no
need pull up externally. Because the
internal diode drop. the voltage of the pin
is 0.8V after power the module.
22
GND
G
-
Ground
23
SD_INS_DET
I
-
Reserved
24
PCM_IN
I
VILmin=-0.3V
VILmax=0.6V
VIHmin=1.2V
V IH max=2.0V
PCM input signal
25
PCM_OUT
O
V OL max=0.45V
VOHmin=1.35V
PCM output signal
26
PCM_SYNC
IO
V OL max=0.45V
VOHmin=1.35V
VILmin=-0.3V
VILmax=0.6V
VIHmin=1.2V
VIHmax=2.0V
PCM synchronization signal
27
PCM_CLK
IO
V OL max=0.45V
VOHmin=1.35V
VILmin=-0.3V
VILmax=0.6V
VIHmin=1.2V
VIHmax=2.0V
PCM clock signal
28
SDC2_DATA3
IO
-
Reserved
29
SDC2_DATA2
IO
-
Reserved
30
SDC2_DATA1
IO
-
Reserved
31
SDC2_DATA0
IO
-
Reserved
32
SDC2_CLK
O
-
Reserved
33
SDC2_CMD
IO
-
Reserved
34
VREG_L13_2P85
PO
-
Reserved

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Pin Num
Pin Name
I/O
Level
Description
35
ANT_DIV
I
-
Diversity antenna
36
GND
-
-
Ground
37
SPI_CS_N
O
-
Reserved
38
SPI_MOSI
O
-
Reserved
39
SPI_MISO
I
-
Reserved
40
SPI_CLK
O
-
Reserved
41
I2C_SCL
OD
-
I2C interface clock signal
42
I2C_SDA
OD
-
I2C interface data signal
43
NC
-
-
NC
44
ADC1
I
-
Analog to digital converter interface1
45
ADC0
I
-
Analog to digital converter interface 0
46
GND
G
-
Ground
47
ANT_GNSS
I
-
GNSS antenna
48
GND
-
-
Ground
49
ANT_MAIN
IO
-
Main antenna
50
GND
G
-
Ground
51
GND
G
-
Ground
52
GND
G
-
Ground
53
GND
G
-
Ground
54
GND
G
-
Ground
55
NC
-
-
NC
56
GND
G
-
Ground
57
VBAT_RF
PI
Vmax=4.3V
Vmin=3.3V
Vnorm=3.8V
RF power input (3.3V~4.3V)
58
VBAT_RF
PI
Vmax=4.3V
Vmin=3.3V
Vnorm=3.8V
RF power input (3.3V~4.3V)
59
VBAT_BB
PI
Vmax=4.3V
Vmin=3.3V
Vnorm=3.8V
Baseband power input（3.3V~4.3V）
60
VBAT_BB
PI
Vmax=4.3V
Vmin=3.3V
Vnorm=3.8V
Baseband Power Input (3.3V~4.3V)
61
STATUS
O
VOHmin=1.35V
V OL max=0.45V
Module network state indicate

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Pin Num
Pin Name
I/O
Level
Description
62
RI
O
V OL max=0.45V
VOHmin=1.35V
Module output ring indicator
63
DCD
O
V OL max=0.45V
VOHmin=1.35V
Module output data carrier detection
64
CTS
O
V OL max=0.45V
VOHmin=1.35V
Request to send
65
RTS
I
VILmin=-0.3V
VILmax=0.6V
VIHmin=1.2V
V IH max=2.0V
Clear to send
66
DTR
I
VILmin=-0.3V
VILmax=0.6V
VIHmin=1.2V
V IH max=2.0V
Data ready. The control of the sleep mode
67
TXD
O
V OL max=0.45V
VOHmin=1.35V
Transmit data
68
RXD
I
VILmin=-0.3V
VILmax=0.6V
VIHmin=1.2V
V IH max=2.0V
Receive data
69
USB_DP
IO
Conform to
USB2.0 standard
specification
USB differential data bus (+)
70
USB_DM
IO
Conform to
USB2.0 standard
specification
USB differential data bus (-)
71
USB_VBUS
PI
Vmax=5.25V
Vmin=3.0V
Vnorm=5.0V
USB plug detection
72,76
GND
G
-
Ground
73,82
RESERVED
-
-
Reserved
74,75,77
~81,83,8
4
NC
-
-
NC
85~112
GND
G
-
GND
113
NC
-
-
NC
114
NC
-
-
NC