104
AVM-P9000R,P9000
*TC9164AF
BA033FP
REFERENCE
VOLTAGE
1
2
3
VCC
GND
OUT
Pin No.
Pin Name
I/O
Format
Function and Operation
31
brst
I
P-BUS reset input
32
bsrq
I/O
P-BUS service request output pin
33
brxen
I/O
Reception enable input/output
34–36
NC
Not used
37
IFHIZ
I
DSP microcomputer port Hiz set input
38
NC
Not used
39
testin
I
Test mode IN/test enable input
40
DSPPW
O
C
Power supply for DSP
41
MUTERQ
O
C
Hard mute output
42–54
NC
Not used
55
GSCK
O
C
Gain select serial clock output
56
GSDT
O
C
Gain select data output
57
GSST
O
C
Gain select strobe output
58
NC
Not used
59
dspcs@
O
C
DSP chip select output 2 (SUB DSP)
60
dsprst
O
C
DSP reset output
61
dspcs!
O
C
DSP chip select output 1 (MAIN DSP)
62–64
NC
Not used
65
cdcrst
O
C
CODEC reset output
66
cdccs
O
C
CODEC chip select output
67
dmute
O
C
Digital mute output
68–74
NC
Not used
75
AVSS
VSS joint
76
NC
Not used
77
VREF
A/D converter reference voltage input
78
AVCC
VCC joint
79
CDCIN
I
CODEC data input
80
CDCOUT
O
C
CODEC data output
Format
Meaning
C
C MOS
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