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6-6. IC PIN FUNCTION DESCRIPTION
• IC801 BU18704-S1 (SYSTEM CONTROLLER)
Pin No.
Pin name
1
2 to 21
SEG1 to SEG20
22
XLINEOUT_MUTE
23
EE_SDA/REM_SDA
24
25
26
PLL_CLK
27
PLL_DATA
28
29
CEL_CEX
30
31
32
33
34
35
PLL_RST
36
37
38
XLINE_DET
39
SUBSYQ
TE
L 13942296513
40
41
OPEN/CLOSE
42
43
K_PLAY
44
K_TUNER
45
46
47
DIN OUT
48
49
50
51
52
53
XXRESET
54
CD_CTL
55
TU_CTL
56
XHP_MUTE
57
XRESET
58
59
60
XOUT75
61
www
62
63
XOUT4M
64
.
65
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I/O
SEG0
O
Not used (OPEN)
O
LCD segment output
O
LINE OUT muting output
I/O
EEPROM data
EE_SCL
O
EEPROM clock
PLL_CE
O
Not used (OPEN)
O
Not used (OPEN)
O
Not used (OPEN)
NC
O
Not used (OPEN)
O
Select model
NC
O
Not used (OPEN)
NC
I
Not used (OPEN)
NC
I
Not used (OPEN)
GND
–
Ground terminal
NC
I
Not used (OPEN)
O
Not used (OPEN)
ST_DET
O
Not used (OPEN)
MO/ST
O
Not used (OPEN)
I
LINE OUT sensing status detection input
I
Sub code sync interuption input
HOLD
I
HOLD switch status detection input
I
OPEN switch status detection input
INNER
I
Not used (OPEN)
I
PLAY KEY input
I
Not used (OPEN)
BEEP
O
Not used (OPEN)
NC
I
Not used (OPEN)
I/O
Command output , DSP status input, subcode Q input
MCK
O
Serial interface clock output
RW
O
DSP's serial interface Read/Write signal output
BUSY
I
DSP's auto sequencer status
FIFO
O
SDRAM initialize output
VDD
–
Power supply for CPU and I/O
O
System reset output
O
Not used (OPEN)
O
Not used (OPEN)
O
Headphone IC mute ON/OFF control output
I
Microcomputer reset terminal
TEST0
I
Connect to GND
XIN75
I
Not used (fixed at "L")
O
Not used (OPEN)
GND
–
Ground terminal
XIN4M
I
4MHz clock input
x
ao
O
4MHz clock output (OPEN)
y
VDD
–
Power supply for CPU and I/O
i
DC_IN
I
DC IN voltage monitoring input
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