CML EV6180 User manual

CMLMicrocircuits
COMMUNICATION SEMICONDUCTORS
EV6180/6380
Evaluation Kit
User Manual
2016 CML Microsystems Plc
UM6180/5 September 2016
Features
•Evaluation platform for CMX608, CMX618 and
CMX638 RALCWI Vocoder ICs
•
3.5mm stereo jack socket microphone
connections to integral audio CODEC
•
Single-ended or differential audio CODEC I/O
•
Requires a single, external +5Vdc power supply
•
EV6180: For CMX608 and CMX618
•Header connections to the SPI
interface: for use with external
3rd party CODECs
•
Header connections to the C-BUS
interface: for PE0003 Evaluation
Kit Interface Card or 3rd party
microcontroller (not supplied)
•
EV6380: For CMX638
1. Brief Description
This document details the use of two Evaluation Kits: EV6180 for CMX608 and CMX618, EV6380 for
CMX638. The EV6180 and EV6380 Evaluation Kits each provide the means to demonstrate and evaluate
the operation of CMX6x8 RALCWI Vocoder ICs. The boards are operated from a single, external +5Vdc
power supply. On-board voltage regulators provide the required analogue and digital supply voltages.
Each board can be controlled with a PE0003 Evaluation Kit Interface Card and ES0003 GUI software. To
use this software, a host PC and PE0003 Evaluation Kit Interface Card are required. Additionally, an
external audio CODEC is required to demonstrate the CMX608 option (EV6180).
Connectors are provided to allow direct interfacing to the C-BUS and SPI interfaces on the CMX6x8
devices. The on-chip audio CODEC (CMX618/638 devices only) is accessible through two 3.5mm stereo
jack sockets. The audio CODEC signal paths can be configured as single-ended or differential.

Evaluation Kit for CMX608/618/638 EV6180/6380
2016 CML Microsystems Plc 2 UM6180/5
CONTENTS
Section Page
1. Brief Description .....................................................................................1
2. Preliminary Information..........................................................................5
2.1. Laboratory Equipment..................................................................5
2.1.1. Power Supply..................................................................5
2.1.2. EvKit Interface Card – PE0003.......................................5
2.1.3. External CODEC.............................................................5
2.1.4. External Microphone.......................................................5
2.1.5. External Loudspeaker(s).................................................5
2.1.6. Host PC...........................................................................6
2.1.7. Cables 6
2.2. Handling Precautions...................................................................6
2.2.1. Static Protection..............................................................6
2.2.2. Contents - Unpacking......................................................6
2.3. Approvals .....................................................................................6
3. Quick Start...............................................................................................7
3.1. Setting-Up the EV6180/6380 with the PE0003 ............................7
3.2. Adjustments .................................................................................7
3.3. Operation .....................................................................................7
4. Signal Lists..............................................................................................8
5. Circuit Schematics and Board Layouts..............................................11
6. Detailed Description .............................................................................12
6.1. Hardware Description.................................................................12
6.1.1. Voltage Requirements...................................................12
6.1.2. Clocking ........................................................................12
6.1.3. Device Reset.................................................................12
6.1.4. LED State Indication .....................................................12
6.1.5. CODEC Selection .........................................................12
6.1.6. Connectors and Jumpers..............................................12
6.2. Full-duplex Demonstration.........................................................14
7. Performance Specification...................................................................17
7.1. Electrical Performance...............................................................17
7.1.1. Absolute Maximum Ratings ..........................................17
7.1.2. Operating Limits............................................................17
7.1.3. Operating Characteristics..............................................18

Evaluation Kit for CMX608/618/638 EV6180/6380
2016 CML Microsystems Plc 3 UM6180/5
Table Page
Table 1 – Signal List.........................................................................................................................9
Table 2 – Test Points .......................................................................................................................9
Table 3 – Default jumper tab settings ............................................................................................10
Table 4 – Configuration Options for Voice CODEC I/O .................................................................13
Figure Page
Figure 1 – Evaluation Layout Diagram............................................................................................. 4
Figure 2 – PCB Layout: top............................................................................................................11
Figure 3 – PCB Layout: bottom......................................................................................................11
Figure 4 – ‘Import Raw Data’ Dialog Box....................................................................................... 15
It is always recommended that you check for the latest product datasheet version from the
Datasheets page of the CML website: [www.cmlmicro.com].

Evaluation Kit for CMX608/618/638 EV6180/6380
2016 CML Microsystems Plc 4 UM6180/5
PE0003
EV6180/
EV6380
PC
USB
J3
J2
Power
Supply
J
J9
J3
Soundcard
output
J8
J10
Loudspeaker
output
EvKit Interface
Card
J11
Figure 1 – Evaluation Layout Diagram

Evaluation Kit for CMX608/618/638 EV6180/6380
2016 CML Microsystems Plc 5 UM6180/5
2. Preliminary Information
2.1. Laboratory Equipment
The following laboratory equipment will be useful for demonstrating the EV6180/6380:
2.1.1. Power Supply
A bench power supply with a regulated +5Vdc output.
2.1.2. EvKit Interface Card – PE0003
The ES0003 software application requires the use of a PE0003 Evaluation Kit Interface Card,
which connects the PE0003 interface connector J3 to the C-BUS interface connector J3 on the
EV6180/6380. The ES0003 application is part of the PE0003 support package, which is available
from http://www.cmlmicro.com/. The PE0003 is not supplied with this kit, but can be ordered
separately.
2.1.3. External CODEC
An external voice CODEC is required for demonstrating the CMX608 functionality. This connects
to the SPI port connector (J4) on the EV6180. The CMX608/618/638 datasheet contains a section
documenting external voice CODEC support. The external CODEC must be supplied by the
customer.
2.1.4. External Microphone
It is recommended that an electret type of microphone is used for the demonstration. The power
for this is supplied from the EV6180/6380 kit.
2.1.5. External Loudspeaker(s)
It is recommended that an external loudspeaker(s) with additional amplification is used to connect
to the CODEC output socket. However, a 32ohm impedance loudspeaker can be connected
directly without additional amplification.

Evaluation Kit for CMX608/618/638 EV6180/6380
2016 CML Microsystems Plc 6 UM6180/5
2.1.6. Host PC
A PC with the following minimum specification:
1GHz Pentium processor or equivalent
1 USB port
256MByte RAM
10MByte of hard drive space available
Windows 2000 or XP installed
Software application ES0003xx installed
A Sound Editor application such as Audacity installed
Windows supported soundcard
2.1.7. Cables
USB type A male to mini B male cable.
2 x 3.5mm jack plug to 3.5mm jack plug (mono or stereo).
2.2. Handling Precautions
Like most evaluation kits, this product is designed for use in office and laboratory environments.
The following practices will help ensure its proper operation.
2.2.1. Static Protection
This product uses low power CMOS circuits that can be damaged by electrostatic discharge.
Partially damaged circuits can function erroneously, leading to misleading results. Observe ESD
precautions at all times when handling this product.
2.2.2. Contents - Unpacking
Please ensure that you have received all of the items on the separate information sheet (EK6380)
and notify CML within 7 working days if the delivery is incomplete.
2.3. Approvals
There are no approvals for this product.

Evaluation Kit for CMX608/618/638 EV6180/6380
2016 CML Microsystems Plc 7 UM6180/5
3. Quick Start
This section provides instructions for users who wish to experiment immediately with the
evaluation kit. A full description of the kit hardware and software is contained in section 6 of this
document.
3.1. Setting-Up the EV6180/6380 with the PE0003
Before commencing with setting up the hardware and software please refer to section 4 of this
document and ensure that the jumper tab settings on the board are the same as the default
positions listed in Table 3.
Extract the PE0003 support package to a directory on the host PC.
Plug the right-angled connector J3 on the EV6180/6380 board directly into right-angled connector
J3 on the PE0003. Connect the output of a regulated DC power supply to J2 on the EV6180/6380
and J11 on the PE0003. The supply voltage should be set at +5V.
Attach the USB cable between connector J9 on the PE0003 and the relevant USB port on the host
PC. Apply voltage to both cards. D8 will illuminate on the PE0003 and D3 will illuminate on the
EV6180/6380.
After power is applied to the EV6180/6380 and PE0003 a request will be displayed on the PC
monitor to install the USB driver. The driver will be located in the directory into which the support
package has been extracted, under the ‘Driver’ sub-directory. Note that during driver installation a
message box may be displayed containing a message that the software being installed does not
pass Windows Logo testing. Click on the ‘Continue Anyway’ button.
Once installation is complete the ES0003xx application can be started. When prompted press the
reset switch SW1 on the PE0003 and click the ‘OK’ button on the GUI. The kit is now ready to use.
3.2. Adjustments
None.
3.3. Operation
Refer to section 6.

Evaluation Kit for CMX608/618/638 EV6180/6380
2016 CML Microsystems Plc 8 UM6180/5
4. Signal Lists
CONNECTOR PINOUT
Connector
Ref.
Connector
Pin No.
Signal
Name
Signal
Type
Description
J2
1
+5V
PWR
+5V external supply voltage
2
GNDD
PWR
External supply ground
J3 5, 13, 14,
15, 17, 18,
N/C
1, 2, 3
CSN
I/P
C-BUS chip select
4
CDATA
I/P
C-BUS command data
6
CLK
I/P
C-BUS serial clock
8
RDATA
O/P
C-BUS reply data
7, 9, 10
IRQN
O/P
C-BUS interrupt request
11, 12
GNDD
PWR
Digital ground
16
SOFT_RESET
I/P
Reset control line for CMX6x8
19, 20
+3V3D
PWR
+3.3V digital supply voltage
J4
1
N/C
2
+3V3D
PWR
+3.3V digital supply voltage
3
STRB
I/P
SSP port serial strobe input
4
SDI
I/P
SSP port serial data input
5
GNDD
PWR
Digital ground
6
SCLK
I/P
SSP port serial clock input
7
EEC
O/P
Enable external CODEC
8
SDO
O/P
SSP port serial data output
9
REC
O/P
Reset external CODEC
10
CSEL
I/P
External/internal CODEC select
J5
1
INPUTP
I/P
Positive audio CODEC input
3
INPUTN
I/P
Negative audio CODEC input
5
OUTP
O/P
Positive audio CODEC output
7
OUTN
O/P
Negative audio CODEC output
2, 4, 6, 8
GNDA
PWR
Analogue ground
Table continued on next page….

Evaluation Kit for CMX608/618/638 EV6180/6380
2016 CML Microsystems Plc 9 UM6180/5
CONNECTOR PINOUT
Connector
Ref.
Connector
Pin No.
Signal
Name
Signal
Type
Description
J8
Sleeve
GNDA
PWR
Analogue ground
Tip
SOCKETP
I/P
Positive external audio input
Ring
SOCKETN
I/P
Negative external audio input
J10
Sleeve
GNDA
PWR
Analogue ground
Tip
OUTP
O/P
Positive external audio output
Ring
OUTN
O/P
Negative external audio output
J11
1, 3
+3V3D
PWR
+3.3V digital supply voltage
2, 4
GNDD
PWR
Digital ground
5
N/C
Table 1 – Signal List
TEST POINTS
Test Point
Ref.
Default
Measurement
Description
TP1, TP2
Digital ground
TP3, TP4
Analogue ground
TP5
+1.65V
Analogue bias output
Table 2 – Test Points

Evaluation Kit for CMX608/618/638 EV6180/6380
2016 CML Microsystems Plc 10 UM6180/5
JUMPERS
Link
Ref.
Positions
Default
Position
Description
JP2
1 – 2
Open
Software reset connection disabled
JP3
1 – 2
Open
+3.3V digital supply rail disconnected from connector J3
JP4
1 – 2
Open
Crystal oscillator enabled
JP5
1 – 2
Short
Current measurement connection for +3.3V digital rail
JP6
1 – 2
Short
Current measurement connection for +1.8V digital rail
JP7
1 – 2
Short
Current measurement connection for +3.3V analogue rail
J7
1 – 2
3 – 4
5 – 6
Short
Open
Open
SYNC control pulled high to +3.3V
J9
1
–
2
3–4
5–6
7–8
9–10
11 –12
13 –14
15 –16
Short
Short
Open
Open
Open
Open
Short
Open
Audio CODEC input configured as single ended
J12
1
–
2
3-4
5–6
Short
Short
Open
D4 and D5 drive enabled, internal CODEC selected
J13
J16
1
–
2
3–4
5–6
1–2
3–4
5–6
Open
Open
Open
Short
Open
Open
Audio CODEC output configured as single ended
J14
1
–
2
3–4
5–6
Open
Short
Open
CSN drive select pin
J15
1
–
2
3–4
5–6
Open
Open
Short
IRQN drive select pin
Table 3 – Default jumper tab settings
Notes: I/P = Input
O/P = Output
PWR = Power

Evaluation Kit for CMX608/618/638 EV6180/6380
2016 CML Microsystems Plc 11 UM6180/5
5. Circuit Schematics and Board Layouts
For clarity, circuit schematics are available as separate high-resolution files. These can be
obtained via the CML website. The layout on each side of the PCB is shown in figures 2 and 3
shown below.
Figure 2 – PCB Layout: top
Figure 3 – PCB Layout: bottom

Evaluation Kit for CMX608/618/638 EV6180/6380
2016 CML Microsystems Plc 12 UM6180/5
6. Detailed Description
6.1. Hardware Description
6.1.1. Voltage Requirements
The board is equipped with three voltage regulators, which provide +3.3V digital, +3.3V analogue
and +1.8V digital supply voltages. The input to these regulators is provided by an external +5V
power supply. Component D3 illuminates when the +3.3V digital voltage is present on the board.
To measure the current consumption of each supply rail remove the jumper tab from the relevant
2-pin header (JP5 for +3.3V digital, JP6 for +1.8V digital, JP7 for +3.3V analogue) and connect an
ammeter to the header.
6.1.2. Clocking
The frequency of crystal X1, as supplied with the kit, is 12MHz. The crystal oscillator is disabled
when a jumper tab is fitted to JP4 and enabled when removed.
6.1.3. Device Reset
The CMX6x8 can be reset in one of three ways:
Pressing switch SW1
Issuing a C-BUS reset command via the PE0003
Driving pin 16 of connector J3 high, via the PE0003 (jumper tab must be fitted to JP2)
6.1.4. LED State Indication
LEDs D4 and D5 can be optionally connected to or disconnected from pins 19 and 20 respectively
of the CMX6x8 device. The jumper tab settings on connector J12 determine whether the LEDs are
in-circuit or not. By default both LEDs are connected in-circuit. The state of pins 19 and 20 is
controlled by the C-BUS register EXCODECCONT ($0B) and writing specific values to this register
controls the illuminated state of the LEDs when they are in-circuit. For a description of this register
refer to the CMX608/618/638 datasheet.
6.1.5. CODEC Selection
The setting of pins 5 and 6 of J12 selects an external CODEC or the internal (CMX618/638 only)
CODEC. Fitting a jumper tab to these pins will select the external CODEC option and removing
the jumper tab will select the internal CODEC option.
6.1.6. Connectors and Jumpers
The C-BUS signals from the CMX6x8 are terminated at connector J3. This is a 20-pin, right-
angled male header, which will mate with the corresponding female socket (J3 or J7) on the
PE0003 Evaluation Kit Interface Card. This allows the CMX6x8 C-BUS to be driven directly by the
PE0003.
J3 also has +3.3V digital supply and ground connections. The +3.3V supply can be connected to
pins 19 and 20 on connector J3 by fitting the jumper tab on JP3.

Evaluation Kit for CMX608/618/638 EV6180/6380
2016 CML Microsystems Plc 13 UM6180/5
The C-BUS signals CSN and IRQN can each be connected to one of three pins on J3. The pin to
which each of them is connected is determined by the jumper tab settings on connectors J14 and
J15 (J14 for CSN, J15 for IRQN). The default setting is to connect CSN to pin 2 and IRQN to pin
10. This corresponds to the pin configuration for interfacing to the PE0003.
J4 is a double row 5-pin header and provides access to the SPI port signals on the CMX6x8. It
also has +3.3V digital supply and ground connections.
J7 is used in conjunction with the SYNCCTRL register (address $04) on the CMX6x8. This
register controls Vocoder synchronisation with the controlling host. J7 can be used to pull up or
pull down the SYNC pin on the CMX6x8 and to access the internal synchronisation signal.
Additionally, an external synchronisation signal can be applied to the SYNC pin of the CMX6x8 via
this connector.
The voice CODEC input and output pins on the CMX6x8 are directly accessible via connector J5.
Alternative access to the voice CODEC I/O is through connectors J8 and J10, which are stereo,
3.5mm jack sockets. Signals applied to the board via these sockets can be routed into and out of
the voice CODEC in single ended and differential configurations. The jumper tab settings of J9,
J13 and J16 determine what configuration is used. Table 4 lists some suggested jumper tab
settings for these connectors.
Configuration Socket J9 setting J13 setting J16 setting
Single ended input
J8
1 – 2 short
3 – 4 short
5 – 6 open
7 – 8 open
9 – 10 open
11 –12 open
13 –1 4 short
15 – 16 open
-
-
Differential input
J8
1 – 2 open
3 – 4 open
5 – 6 short
7 – 8 short
9 – 10 short
11 –12 short
13 –1 4 open
15 – 16 open
-
-
Single ended output
J10
-
1 – 2 open
3 – 4 open
5 – 6 open
1 – 2 short
3 – 4 open
5 – 6 open
Differential output
J10
-
1 – 2 open
3 – 4 short
5 – 6 open
1 – 2 open
3 – 4 open
5 – 6 open
Table 4 – Configuration Options for Voice CODEC I/O
Test points TP1, TP2, TP3 and TP4 are attachment points to the digital and analogue ground
planes. These can be used to ground test and measurement equipment. Test point TP5 connects
to the bias pin of the CMX6x8 and can be used to monitor the state of the bias voltage (1.65V).
J11 is an attachment point for the regulated +3.3V digital voltage.

Evaluation Kit for CMX608/618/638 EV6180/6380
2016 CML Microsystems Plc 14 UM6180/5
6.2. Full-duplex Demonstration
This section contains an example script that can be executed using the Script Handler tab, which
is part of the ES0003 software application. The script is available as part of the EV6380 support
package, which is available from http://www.cmlmicro.com/. For a full description of the Script
Handler command syntax refer to the Script Language Reference (publication SD/PE0003/script/2
or later) and the PE0003 User Manual (publication UM0003/2 or later). For a full description of the
CMX638 device refer to the CMX608/618/638 datasheet.
The example script will set up the CMX638 for full-duplex operation at 2400bps. Using a software
sound editor such as Audacity, installed on the host PC, PCM samples can be output from the PC
sound card and fed into the CODEC input socket on the EV6180/6380. The PCM sample data will
be encoded, decoded and the resultant output from the CODEC output socket of the EV6180/6380
can be played back through the sound card on the host PC.
;FullDuplexDemo.txt
value buffer 27 ;Declare an array 'value' of size 27 x 16-bit.
register #1, #$09, #1 ;Set Powersave register length to 8 bits
register #1, #$07, #1 ;Set Vocoder configuration register length to 8 bits
register #1, #$2E, #1 ;Set Service Acknowledgement reg. length to 8 bits
register #1, #$10, #1 ;Set Decoder Frame register length to 8 bits
register #1, #$30, #1 ;Set Encoder Frame register length to 8 bits
register #1, #$06, #1 ;Set Analogue Output Gain register length to 8 bits
register #1, #$05, #1 ;Set analogue Input gain register length to 8 bits
register #1, #$0A, #1 ;Set DTMF Attenuation register length to 8 bits
device #1 ;Select device 1 (connect EV6380 to J3 PE0003)
copy #1, *$01 ;Reset CMX638
copy #0, value
while value == #0
copy *$40, value ;Wait for RDY flag (Status reg. bit 15) to be set
and #$8000, value
endwhile
copy #$00, *$05 ;Set analogue input gain to 0dB
copy #$08, *$06 ;Set analogue output gain to +2dB
copy #$8107, *$1F ;Enable interrupts
copy #$0006, *$1D ;Select fast clock speed for full-duplex mode
copy #$00, *$0A
copy #$03, *$09 ;Turn on analogue BIAS and CODEC master clock
delay #100 ;Allow 100ms to allow bias to reach its final value
copy #$37, *$07 ;Set FEC, HDD, 2400bps and 3 x 20ms frames
copy #0, value
while value == #0
copy *$40, value ;Wait for RDY flag to be set
and #$8000, value
endwhile
copy *$2E, value ;Check that device has accepted configuration
and #$0001, value
jmpc value == #$0001 device_configured
disp "Device not configured"
stop
device_configured
disp "Device configured"
copy #$0003, *$11 ;Enable encoder and decoder
copy #0, value
while value == #0
copy *$40, value ;Wait for RDY flag to be set
and #$8000, value
endwhile
copy *$2E, value ;Check that device has accepted control command
and #$0001, value
jmpc value == #$0001 device_ready

Evaluation Kit for CMX608/618/638 EV6180/6380
2016 CML Microsystems Plc 15 UM6180/5
disp "Device not ready"
stop
device_ready
disp "Device ready"
jmp encode_frames ;Start processing frames
encode_frames
copy *$40, value ;Clear any pending interrupt
copy #0, value
jsr wait_for_interrupt ;Wait for Vocoder Data Available flag to be set
read *$30, value[0], #27 ;Read encoded frame (27 bytes) from device
jmp decode_frames ;Decode the encoded frame
decode_frames
write value[0], *$10, #27 ;Write encoded frame to Decoder Frame register
jmp encode_frames ;Process the next frame
wait_for_interrupt
while value == #0
copy *$40, value
and #$0001, value
endwhile
return
There are numerous software based sound editors currently available, both open source and
proprietary. Audacity is an open source application and is freeware. It is available for download
from http://audacity.sourceforge.net/. A short guide to using Audacity with the demonstration is
described below. Before running through the demonstration it is assumed that the following has
been carried out:
The EV6180/6380 has been connected to the PE0003 and both boards powered up
The ES0003 application is running
The PC soundcard output is connected to the CODEC input socket and the CODEC
output socket is connected to the PC soundcard input
A loudspeaker or headphones have been connected to the audio output of the PC
soundcard
1. Start the Audacity application.
2. From the ‘Project’ menu select the ‘Import Raw Data’ option.
3. Select a file that holds PCM encoded speech and click on the ‘Open’ button. The format of the
encoded speech must be signed, 16-bit PCM, with a sampling frequency of 8kHz.
4. Set the options on the ‘Import Raw Data’ dialog box to the same settings shown in Figure 4.
The raw data once imported will be displayed on an audio track within the editor window.
Figure 4 – ‘Import Raw Data’ Dialog Box

Evaluation Kit for CMX608/618/638 EV6180/6380
2016 CML Microsystems Plc 16 UM6180/5
5. Press the ‘Select Script’ button on the Script Handler tab within the ES0003 application. Using
the displayed dialog box navigate to the directory on the host PC where the example script
has been extracted and select it. Once the script has been loaded press the ‘Run’ button to
run the script.
6. Using the opened Audacity editor window, begin playback of the imported audio track by
pressing the play button. The play button is displayed within the Control toolbar, which by
default is located at the top right corner of the Audacity editor window. For continual looped
playback of the audio track hold down the shift key whilst pressing the play button.

Evaluation Kit for CMX608/618/638 EV6180/6380
2016 CML Microsystems Plc 17 UM6180/5
7. Performance Specification
7.1. Electrical Performance
7.1.1. Absolute Maximum Ratings
Exceeding these maximum ratings can result in damage to the Evaluation Kit.
Min.
Max.
Units
Supply (VIN - VSS)
-0.3
16.0
V
Voltage on any connector pin to VSS
-0.3
VDD + 0.3
V
Current into or out of OUTP, OUTN, VIN and VSS pins
0
+1.5
A
Current into or out of any other connector pin
-20
+20
mA
7.1.2. Operating Limits
Correct operation of the Evaluation Kit outside these limits is not implied.
Notes
Min.
Max.
Units
Supply (VIN - VSS)
4.0
16.0
V
Xtal/External Clock Frequency
1
9.6
24.0
MHz
Notes: 1. Allowable maximum crystal frequency is 12MHz. Frequencies above 12MHz should be
generated by an external clock source.

Evaluation Kit for CMX608/618/638 EV6180/6380
2016 CML Microsystems Plc 18 UM6180/5
7.1.3. Operating Characteristics
For the following conditions unless otherwise specified:
Xtal Freq. = 12.0MHz ±100ppm, VDDPA = AVDD = IOVDD = 3.0V to 3.6V; VDD = 1.7V to 1.9V; Tamb = 25°C.
Notes
Min.
Typ.
Max.
Units
DC Parameters
IDD (total, when operating)
1
50.0
–
mA
AC Parameters
CODEC
Input Impedance (INPUT P or INPUT N)
1
–
–
MΩ
Input Voltage Range (INPUT P or INPUT N)
–
–
20 to 80
%AVDD
Differential Input Voltage
–
–
100
%AVDD
Output Load Impedance (OUT P or OUT N)
3
32
–
–
Ω
Output Voltage Range (OUT P or OUT N)
2
–
–
10 to 90
%VDDPA
Differential Output Voltage
2
–
–
160
%VDDPA
Differential Output Power
2
–
120
–
mW
Xtal/Clock Input (for an external clock)
'High' pulse width
15
ns
'Low' pulse width
15
ns
Input logic "1" level
70%
VDD
Input logic "0" level
30%
VDD
µC Interface
Input logic "1" level
80%
VDD
Input logic "0" level
20%
VDD
Output logic "1" level (lOH = 120µA)
90%
VDD
Output logic "0" level (lOL = 360µA)
10%
VDD
Notes: 1. PCB current consumption, including current consumption of the CMX6x8,
with no external loads.
2. Measured whilst driving a 32Ω resistive load between OUTP and OUTN pins.
3. Care should be taken to avoid shorting the OUTP and OUTN pins together,
or to VDD or VSS.

Evaluation Kit for CMX608/618/638 EV6180/6380
CML does not assume any responsibility for the use of any circuitry described. No IPR or circuit patent licences are
implied. CML reserves the right at any time without notice to change the said circuitry and any part of this product
specification. Evaluation kits and demonstration boards are supplied for the sole purpose of demonstrating the operation of
CML products and are supplied without warranty. They are intended for use in a laboratory environment only and are not for
re-sale, end-use or incorporation into other equipments. Operation of these kits and boards outside a laboratory
environment is not permitted within the European Community. All software/firmware is supplied "as is" and is without
warranty. It forms part of the product supplied and is licensed for use only with this product, for the purpose of
demonstrating the operation of CML products. Whilst all reasonable efforts are made to ensure that software/firmware
contained in this product is virus free, CML accepts no responsibility whatsoever for any contamination which results from
using this product and the onus for checking that the software/firmware is virus free is placed on the purchaser of this
evaluation kit or development board.
Operating Characteristics - Timing Diagrams
Please refer to CMX608/618/638 Datasheet for details.