Pioneer DEH-P900R Service Manual - Page 74

Pin Functions PD5504A

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DEH-P900R,P9050 - Pin Functions (PD5504A) Pin No. Pin Name 1 NC 2 NC 3 VST 4 VDT 5 VCK 6 CNVSS 7 MCKRQ 8 EMPHIN 9 reset 10 XOUT 11 VSS 12 XIN 13 VCC 14 NMI 15 BMUTEIN 16 NC 17 brst 18-23 NC 24 DSPOUT 25 DSPIN 26 DSPCK 27 NC 28 BSO 29 BSI 30 BSCK 31 NC 32 bsrq 33 brxen 34,35 NC 36 MICSENS 37 IFHIZ 38 AQTEST 39 testin 40 DSPPW 41 MUTERQ 42 NGO 43 SYSMUTE 44-47 NC 48 PLLLOC 49 PLLCLR 50 PLLDT 51 PLLCK 52-57 NC 58 LRCKK 59 MCKOUT 60 SMODE 61 AKPD 62 AKRST 63 AKJMP 64 dspcs 65 akwrq 66 dspack 67 akrdy 68-72 NC 73 MDSEL2 74 NOISE 75 AVSS 76 NC 77 VREF 78 AVCC 79 NC 80 NC 74 I/O Format Function and Operation VSS joint Not used O C Electronic volume strobe output O C Electronic volume data output O C Electronic volume clock output I VSS joint I CD unit MCK request input I CD unit emphasis data input I Reset input O O Crystal oscillating element connection pin GND I Crystal oscillating element connection pin 5V I NML joint I CD unit LR clock supply input VSS joint I P-BUS reset input Not used O C DSP serial data output I DSP serial data input O C DSP serial clock output Not used O C P-BUS serial data output I P-BUS serial data input I/O P-BUS serial clock input/output Not used I/O P-BUS service request output pin I/O Reception enable input/output Not used I A.EQ microphone connection data input I DSP microcomputer port Hiz set input I A.EQ test mode start input I Test mode IN/test enable input O C Power supply for DSP O C Hard mute output O C Digital zero output O C System mute output Not used I PLL Lock supply data input O C PLL control clear output O C PLL control data output O C PLL control clock output Not used O C LRCK/BCLK select control output O C CD MCLK gate control O C AK7714 master/slave select input O C AK7714 power down O C AK7714 reset O C AK7714 condition jump O C AK7714 chip select output O C AK7714 data output request I DSP data write ready supply input I AK7714 data ready Not used I Model select input I ASL noise input I A/D GND Not used I A/D converter reference voltage input A/D VCC VSS joint Not used

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Pin Functions (PD5504A)
Pin No.
Pin Name
I/O
Format
Function and Operation
1
NC
VSS joint
2
NC
Not used
3
VST
O
C
Electronic volume strobe output
4
VDT
O
C
Electronic volume data output
5
VCK
O
C
Electronic volume clock output
6
CNVSS
I
VSS joint
7
MCKRQ
I
CD unit MCK request input
8
EMPHIN
I
CD unit emphasis data input
9
reset
I
Reset input
10
XOUT
O
O
Crystal oscillating element connection pin
11
VSS
GND
12
XIN
I
Crystal oscillating element connection pin
13
VCC
5V
14
NMI
I
NML joint
15
BMUTEIN
I
CD unit LR clock supply input
16
NC
VSS joint
17
brst
I
P–BUS reset input
18–23
NC
Not used
24
DSPOUT
O
C
DSP serial data output
25
DSPIN
I
DSP serial data input
26
DSPCK
O
C
DSP serial clock output
27
NC
Not used
28
BSO
O
C
P–BUS serial data output
29
BSI
I
P–BUS serial data input
30
BSCK
I/O
P-BUS serial clock input/output
31
NC
Not used
32
bsrq
I/O
P-BUS service request output pin
33
brxen
I/O
Reception enable input/output
34,35
NC
Not used
36
MICSENS
I
A.EQ microphone connection data input
37
IFHIZ
I
DSP microcomputer port Hiz set input
38
AQTEST
I
A.EQ test mode start input
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
NGO
O
C
Digital zero output
43
SYSMUTE
O
C
System mute output
44–47
NC
Not used
48
PLLLOC
I
PLL Lock supply data input
49
PLLCLR
O
C
PLL control clear output
50
PLLDT
O
C
PLL control data output
51
PLLCK
O
C
PLL control clock output
52–57
NC
Not used
58
LRCKK
O
C
LRCK/BCLK select control output
59
MCKOUT
O
C
CD MCLK gate control
60
SMODE
O
C
AK7714 master/slave select input
61
AKPD
O
C
AK7714 power down
62
AKRST
O
C
AK7714 reset
63
AKJMP
O
C
AK7714 condition jump
64
dspcs
O
C
AK7714 chip select output
65
akwrq
O
C
AK7714 data output request
66
dspack
I
DSP data write ready supply input
67
akrdy
I
AK7714 data ready
68–72
NC
Not used
73
MDSEL2
I
Model select input
74
NOISE
I
ASL noise input
75
AVSS
I
A/D GND
76
NC
Not used
77
VREF
I
A/D converter reference voltage input
78
AVCC
A/D VCC
79
NC
VSS joint
80
NC
Not used
74
DEH-P900R,P9050