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No.
Pin Name
/O
Function
45
S
O
Chip select for {C470 NJU7305 (Equalizer IC)
46
CLK
O
Shift clock for 1C470 NJU7305 (Equalizer IC)
47
DI
O
Data for [C470 NJU7305 (Equalizer IC)
48
Vss
oe
GND
49
MPX
O
Not used
50
REQ
O
Not used
51
SECK
O
Not used
a2
SEDATA
O
Not used
53
K-PON
O
Karaoke PON ON/OFF
54
CS
O
Not used
55
SCK
O
Not used
56
CDI
O
Not used
57
SDA
1/0 | 1C620 X24CO1 (E2PROM) data
58
SCL
O
1C620 X24CO1 (E2PROM) clock
59
CS1
O
IC621 SPC5243 (Clock IC) chip select 1
60
CSO
O 7 1C621 SPC5243 (Clock IC) chip select 0
61
SI
O- | 1C621 SPC5243 (Clock IC) write data
62
CLK
O | 1C621 SPCS5243 (Clock IC) data shift clock
63
WR
O
1C621 SPC5243 (Clock IC) write/read selection
64
SO
I
1C621 SPC5243 (Clock IC) read data
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