Sony SCD-XB790 Service Manual page 60

SCD-XB790
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• MAIN BOARD IC904 ISPLSI2032VE-110LT44-SA (PROGRAMMABLE LOGIC DEVICE)
Pin No.
Pin Name
1 TRKSW
2
ZEROL
3
FS64
4
FS128
5 YO
6
VCC
7
XBSCAN
8
TDI
9 XCS
10
XRD
11
XWR
12 to 16
D0 to D4
17 GND
18
TDO
19 to 21
D5 to D7
22
A
23 CDPDSW
24
RST
25
RST DSD
26
RST DP
27 TCK
TE
28
L 13942296513 VCC
29
XRESET
30
TMS
31 RST DVD
32
RST CD
33
DVDPDSW
34
MULTI
35 SDEN
36
ISBTEST
37
RMUTE
38
LMUTE
39
GND
40 GOE
41
ZEROR
42
ZEROL
43
ZEROR
44 LIM SW
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I/O
O Tracking coil drive on/off control signal output
I
L-ch zero data flag detection signal input from the digital filter
O
Clock signal (2.8224 MHz) output to the digital filter and DSD decoder
O
Clock signal (5.6448 MHz) output to the DSD decoder
I Clock signal (11.2896 MHz) input from the digital filter
—
Power supply terminal (+5V) (digital system)
—
Not used
—
Not used
I Chip select signal input from the CPU
I
Read strobe signal input from the CPU
I
Write strobe signal input from the CPU
I/O
Two-way data bus with the SACD decoder and the CPU
— Ground terminal (digital system)
—
Not used
I/O
Two-way data bus with the SACD decoder and the CPU
I
Address signal input from the CPU
O Photo diode for CD on/off control signal output "L": photo diode on
I
Reset signal input from the CPU "L": reset
O
Reset signal output to the DSD decoder "L": reset
O
Reset signal output to the fluorescent indicator tube driver "L": reset
— Not used
—
Power supply terminal (+5V) (digital system)
—
Not used
—
Not used
O Reset signal output to the SACD decoder "L": reset
O
Reset signal output to the digital signal processor "L": reset
O
Photo diode for SACD on/off control signal output "L": photo diode on
O
Multi/2ch selection signal output "L": 2ch, "H": multi
O Serial data enable signal output to SACD/CD RF amplifier
O
Output terminal for disc inspection mode to DSD decoder
O
Front R-ch muting on/off control signal output "L": muting on
O
Front L-ch muting on/off control signal output "L": muting on
—
Ground terminal (digital system)
— Not used
I
R-ch zero data flag detection signal input from the digital filter
I
Front L-ch zero data flag detection signal input from the DSD decoder
I
Front R-ch zero data flag detection signal input from the DSD decoder
I Detection signal input from limit in switch The optical pick-up is inner position when "H"
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Description
"H": drive on
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