Pioneer VSX-52TX Service Manual - Page 137

Pin Function

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5 Pin Function No. Pin Name 1 12VTRIGGER 2 DISP RST 3 DISP EN 4 DISP RDY 5 OSD/DISP DI 6 DISP DO 7 OSD/DISP CLK 8 GND 9 CNVSS 10 - 11 - 12 XRESET 13 XOUT 14 GND 15 XIN 16 5V 17 NMI 18 WAKEUP 19 1394 INT 20 1W WUP 21 DECO MUTE 22 DSP OL 23 DC PROT 24 Boad DET 25 MIC DET 26 1394 RST 27 1394 CS 28 1394 CK 29 1394 DO 30 1394 DI 31 232C RXD 32 232C TXD 33 CLK 34 232C CTS 35 DSP DI 36 DSP DO 37 DSP CLK 38 DSP RST 39 DSP SS 40 BUSY 41 DSP HREQ 42 DSP MODE 43 DSP MUTE 44 ADMD 45 DIR DO 46 DIR CS 47 LSSN 48 DIR RST 49 DIR ERR 50 XTLO 6 7 8 I/O Pin Function Active O "H" at ON O Display microcomputer reset signal L: reset, H: release reset (pulldown) A O Communication enabling signal to the display microcomputer H I Communication enabling signal from the display microcomputer H O Communication data out signal with the OSD-IC/display microcomputer (N ch open drain: pullup) I Communication data in signal with the display microcomputer (N ch open drain) O Communication clock signal with the OSD-IC/display microcomputer − Ground − 5.1kΩ pulldown O L" fixed O L" fixed − Reset B − Oscillator − Ground − Oscillator − 5V power supply I Cannot use it as usual input port (100kΩ pullup) I Wakeup H I INT for 1394 (Not used) Standby with the circuit. I Wakeup signal at standby (from the display microcomputer) (pulldown) H I Boot success detecting port of 1st DSP O Communication enabling signal to the display microcomputer H O OSD-IC reset signal L: reset, H: release reset C O OSD-IC chip select signal H O At data transfer to the OSD-IC: "H" O Reset for 1394 "L" fixed. O Standby for 1394 (Not used) "L" fixed. H O CK for 1394 O DO for 1394 I DI for 1394 O For 232C rewriting (data output) I For 232C rewriting (data input) - Not used O For 232C rewriting (communication permission) D O Communication data out signal with the DSP1 microcomputer I Communication data in signal with the DSP2 microcomputer O Communication clock signal with the DSP microcomputer O DSP microcomputer reset signal L: reset, H: release reset O Slave select signal to DSP microcomputer I MCACC used L O Error detection signal of DSP microcomputer L O Mode selection of DSP microcomputer (ROM/RAM) H: ROM mode, L: RAM (PPP) mode H O DSP Assy mute H - NC E I Communication data in signal with the DIR/DAC O Communication chip select signal with the DIR/DAC - NC O DIR reset signal I Lock/Unlock signal from DIR O Selection X'tal to DIR F VSX-52TX 137 5 6 7 8

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VSX-52TX
137
5
6
7
8
5
6
7
8
C
D
F
A
B
E
Pin Function
No.
Pin Name
I/O
Pin Function
Active
1
12VTRIGGER
O
"H" at ON
2
DISP RST
O
Display microcomputer reset signal
L: reset, H: release reset (pulldown)
3
DISP EN
O
Communication enabling signal to the display microcomputer
4
DISP RDY
I
Communication enabling signal from the display microcomputer
5
OSD/DISP DI
O
Communication data out signal with the OSD-IC/display microcomputer (N ch open drain: pullup)
6
DISP DO
I
Communication data in signal with the display microcomputer (N ch open drain)
7
OSD/DISP CLK
O
Communication clock signal with the OSD-IC/display microcomputer
8
GND
−
Ground
9
CNVSS
−
5.1k
Ω
pulldown
10
–
O
L" fixed
11
–
O
L" fixed
12
XRESET
−
Reset
13
XOUT
−
Oscillator
14
GND
−
Ground
15
XIN
−
Oscillator
16
5V
−
5V power supply
17
NMI
I
Cannot use it as usual input port
(100k
Ω
pullup)
18
WAKEUP
I
Wakeup
H
H
H
19
1394 INT
I
INT for 1394 (Not used)
Standby with the circuit.
20
1W WUP
I
Wakeup signal at standby (from the display microcomputer)
(pulldown)
H
21
DECO MUTE
I
Boot success detecting port of 1st DSP
22
DSP OL
O
Communication enabling signal to the display microcomputer
H
23
DC PROT
O
OSD-IC reset signal
L: reset,
H: release reset
24
Boad DET
O
OSD-IC chip select signal
H
25
MIC DET
O
At data transfer to the OSD-IC: "H"
26
1394 RST
O
Reset for 1394 "L" fixed.
27
1394 CS
O
Standby for 1394 (Not used) "L" fixed.
H
28
1394 CK
O
CK for 1394
29
1394 DO
O
DO for 1394
30
1394 DI
I
DI for 1394
31
232C RXD
O
For 232C rewriting
(data output)
32
232C TXD
I
For 232C rewriting
(data input)
33
CLK
-
Not used
34
232C CTS
O
For 232C rewriting
(communication permission)
35
DSP DI
O
Communication data out signal with the DSP1 microcomputer
36
DSP DO
I
Communication data in signal with the DSP2 microcomputer
37
DSP CLK
O
Communication clock signal with the DSP microcomputer
38
DSP RST
O
DSP microcomputer reset signal
L: reset, H: release reset
39
DSP SS
O
Slave select signal to DSP microcomputer
40
BUSY
I
MCACC used
L
41
DSP HREQ
O
Error detection signal of DSP microcomputer
L
42
DSP MODE
O
Mode selection of DSP microcomputer (ROM/RAM)
H: ROM mode, L: RAM (PPP) mode
H
43
DSP MUTE
O
DSP Assy mute
H
44
ADMD
-
NC
45
DIR DO
I
Communication data in signal with the DIR/DAC
46
DIR CS
O
Communication chip select signal with the DIR/DAC
47
LSSN
-
NC
48
DIR RST
O
DIR reset signal
49
DIR ERR
I
Lock/Unlock signal from DIR
50
XTLO
O
Selection X'tal to DIR