RALCWI Vocoder
CMX608/CMX618/CMX638
3.
Signal List
CMX608/
CMX618/
CMX638
L4/Q3
Signal
Description
Pin No.
Name
Type
CMX618/CMX638: Analogue Positive Power Supply 3.3V
CMX608: Not used (connect to IOVDD)
AVDD
Power
1
CMX618/CMX638: Analogue Negative Power Supply 0V
CMX608: Not used (connect to VSS)
AVSS
BIAS
Power
2
3
CMX618/CMX638: Analogue Bias (approximately 1.65 Volts)
CMX608: Not used (leave unconnected)
Analogue
Output
CMX618/CMX638: Analogue Negative Reference
CMX608: Not used (connect to VSS)
4
VSSREF
INPUT P
INPUT N
AVDD
Power
CMX618/CMX638: Audio CODEC Positive Input (self biased)
CMX608: Not used (leave unconnected)
Analogue
Input
5
CMX618/CMX638: Audio CODEC Negative Input (self biased)
CMX608: Not used (leave unconnected)
Analogue
Input
6
CMX618/CMX638: Analogue Positive Power Supply 3.3V
CMX608: Not used (connect to IOVDD)
Power
Power
Power
7
CMX618/CMX638: Analogue Negative Power Supply 0V
CMX608: Not used (connect to VSS)
AVSS
8
CMX618/CMX638: Output Amplifier Negative Power Supply 0V
CMX608: Not used (connect to VSS)
VSSPA
OUT P
OUT N
VDDPA
9
CMX618/CMX638: Audio CODEC – Amplifier Positive Output
CMX608: Not used (leave unconnected)
Analogue
Output
10
11
12
CMX618/CMX638: Audio CODEC – Amplifier Negative Output
CMX608: Not used (leave unconnected)
Analogue
Output
CMX618/CMX638: Output Amplifier Positive Power Supply 3.3V
CMX608: Not used (connect to IOVDD)
Power
13
14
15
VDD
IOVDD
SDI
Power
Power
Digital Positive Power Supply 1.8V
Digital I/O Positive Power Supply 3.3V
Digital Input SSP port serial data input
Digital
SDO
16
SSP port serial data output
Output
CODEC PORT
SCLK
STRB
17
18
Digital Input SSP port serial clock input
Digital Input SSP port serial strobe input
2014 CML Microsystems Plc
6
D/608_18_38/11
CMLMICRO [ CML MICROCIRCUITS ]
