80
HCD-HPX9
• IC Pin Function Description
MAIN BOARD IC306 M3062CMEN-A02FPU0 (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1
CD DISCSENS 2
I
DISC 4, 5 and DISC (+1) detect signal input
2
CD DISCSENS 1
I
DISC 1 to 3 detect signal input
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 (fixed “L”)
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)
System reset signal input terminal “L”: reset
12
RESET
I
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 (AEP only)
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
26
CD MICS
O
Chip select signal output to the MP3 decoder
27
CD MP3REQ
I
Data transfer request signal input from the MP3 decoder
28
CD MP3STB
O
Standby signal output to the MP3 decoder
IIC data transfer clock signal input and output Not used
IIC two-way data bus Not used
Not used
I
Acknowledge signal input from the MP3 decoder
Reset signal output to the MP3 decoder
Serial data transfer clock signal output to the CD DSP
Serial data output to the MP3 decoder
I
Serial data input from the MP3 decoder
Serial data transfer clock signal output to the MP3 decoder
38
CD DATA
O
Serial data output to the CD DSP
39
CD AMUTE
O
CD muting on/off control signal output terminal
40
ELV E3/TRE A
I
ELV pulse input from the rotary encoder
41
ELV E2/TRE B
I
ELV dial pulse input from the rotary encoder
42
ELV E1/BASS A
I
ELV dial pulse input from the rotary encoder
43
ELV E0/BASS B
I
ELV dial pulse input from the rotary encoder
44
SW4 (8CM)
I
CD disc size detection (8cm) signal input terminal
45
SW3 (PUSH-CLOSE)
I
CD push-close switch input terminal
46
SW2-1 (CLOSE)
I
CD close switch input terminal
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