Read Sony CDX-805 Service Manual online
– 37 –
Pin No.
Pin Name
I/O
Function
1, 2
NC
–
Not used (open)
3
NC
I
Not used (Fixed at “L”)
4
REQ
O
“Request to send” signal to the system controller (IC201)
5
CCLK
I
Input of command clock signal from the system controller (IC201)
6
CSI
I
Input of command data from the system controller (IC201)
7
CSO
O
Output of command data to the system controller (IC201)
8
SCLK
O
Output of subcode Q data reading clock signal to CXD2530Q (IC101)
9
SSI
I
Input of subcode Q data signal from CXD2530Q (IC101)
10
NC
–
not used (open)
11-18 ADD0-ADD7
O
Address signal output to the SRAM (IC502)
19
NC
I
Not used (Fixed at “L”)
20-27 DATA0-DATA7
I/O
Data signal input/output with the SRAM (IC502)
28
RST
I
Reset signal input from the system controller (IC201)
29
EXTAL
I
Input of system clock (10 MHz)
30
XTAL
O
Output of system clock (10 MHz)
31
VSS
–
Ground pin
32-55
NC
–
Not used (open)
56
BUSY
O
Output of Busy signal to the system controller (IC201)
57-61
NC
–
Not used (open)
62
CE
O
Chip enable signal output to the SRAM (IC502)
63
WE
O
Reading/Writing control signal output to the SRAM (IC502)
64-69
ADD8-ADD13
O
Address signal output to the SRAM (IC502)
70
VDD
–
Power supply
71, 72
NC
–
Not used (open)
73
NC
–
Connected to the power supply
74
ADD14
O
Address signal output to the SRAM (IC502)
75
NC
–
Not used (open)
76
SCOR
I
Input of subcode sync detect signal from CXD2530Q (IC101)
77
WFCK
I
Input of write frame check signal from CXD2530Q (IC101)
78
BUCK
I
Input of back up detection
“H” : Backup on
79, 80
NC
I
Not used (Fixed at “L”)
MAIN BOARD
IC501 CXP83413-035Q (CD-TEXT DECODER)
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