UPD9611 Datasheet, PDF (5/28 Pages) NEC – FOUR-CHANNEL PCM CODEC

Pin No.
28
29
30-32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
Symbol I/O
Name and Function
LAW
I A-law/µ-law select pin in common to four channels
L: A-law, H: µ-law
RST
– Reset input, power-on reset pin
H: normal operation
L : internal registers are in the default status.
NC
– Leave this pin open.
DGND
– Digital ground pin
SUBGND
– Substrate ground pin
AGND4
– Analog ground pin for channel 4
AGND3
– Analog ground pin for channel 3
AGND2
– Analog ground pin for channel 2
AGND1
– Analog ground pin for channel 1
ACOMOUT4 O Signal reference voltage output for channel 4
ACOMIN4
I Signal reference voltage input for channel 4
ACOMOUT3 O Signal reference voltage output for channel 3
ACOMIN3
I Signal reference voltage input for channel 3
NC
– Leave this pin open.
AOUT3
O Receive analog output pin for channel 3
AIN3
I Transmit analog input pin for channel 3
When not used, connect to ACOMOUT1 pin.
NC
– Leave this pin open.
AOUT4
O Receive analog output pin for channel 4
AIN4
I Transmit analog input pin for channel 4
When not used, connect to ACOMOUT1 pin.
µPD9611
5