49
HCD-GPX9
•
IC Pin Function Description
MAIN BOARD IC306 M30622MEP-A27FPU0 (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1
CD DISCSENS 2
I
Not used
2
CD DISCSENS 1
I
Not used
3
STBY LED
O
LED drive signal output terminal (power)
4
SIRCS IN/WAKE
I
SIRCS signal input terminal
5, 6
VOL A, VOL B
I
Jog dial pulse input terminal (volume)
7
FLSTB
O
Serial data read strobe signal output to the FL/LED driver
8
BYTE
I
External data bus width select signal input terminal
9
CNVSS
-
Ground terminal
10
XCIN
I
Sub system clock input terminal (32.768 kHz)
11
XCOUT
O
Sub system clock output terminal (32.768 kHz)
12
RESET
I
System reset signal input terminal "L": reset
For several hundreds msec. after the power supply rises, "L" is input, then it changes to "H"
13
XOUT
O
Main system clock output terminal (16 MHz)
14
VSS
-
Ground terminal
15
XIN
I
Main system clock input terminal (16 MHz)
16
VCC
-
Power supply terminal (+3.3V)
17
NMI
I
Non-maskable interrupt signal input terminal Not used
18
RDS-CLK
I
RDS serial data transfer clock signal input terminal
19
CD SCOR
I
Subcode Q data request signal input terminal
20
AC-CUT
I
Power down detection signal input terminal "L": power down
21
FL CLK
O
Serial data transfer clock signal output to the FL/LED driver
22
CD XRST
O
System reset signal output to the CD servo block
23
CD XLT
O
Latch pulse signal output to the CD servo block
24
CD SENS
I
Internal status (SENSE) input from the CD DSP
25
CD MILP
O
Serial data latch pulse output to the MP3 decoder Not used
26
CD MICS
O
Chip select signal output to the MP3 decoder Not used
27
CD MP3REQ
I
Data transfer request signal input from the MP3 decoder Not used
28
CD MP3STB
O
Standby signal output to the MP3 decoder Not used
29
IICCLK
I/O
IIC data transfer clock signal input and output Not used
IIC two-way data bus Not used
I
Serial data input from the DAB module
Serial data output to the DAB module
Reset signal output to the MP3 decoder Not used
Serial data transfer clock signal output to the CD DSP
Serial data output to the MP3 decoder Not used
I
Serial data input from the MP3 decoder Not used
Serial data transfer clock signal output to the MP3 decoder Not used
CD DATA
O
Serial data output to the CD DSP
39
CD AMUTE
O
CD muting on/off control signal output terminal
40
TRE A
I
Jog dial pulse input from the rotary encoder (treble)
41
TRE B
I
Jog dial pulse input from the rotary encoder (treble)
42
BASS A
I
Jog dial pulse input from the rotary encoder (bass)
43
BASS B
I
Jog dial pulse input from the rotary encoder (bass)
44
SW4 (8CM)
I
CD disc size detection (8cm/12cm) signal input terminal Not used
45
SW3 (PUSH-
CLOSE)
I
CD push-close switch input terminal Not used
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