24
XR-CA430X
6-8.
IC PIN FUNCTION DESCRIPTION
•
MAIN BOARD IC501 MN101C49GYA2 (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1
VREF–
I
Reference voltage (0V) input terminal (for A/D converter)
2
VSM
I
FM and AM signal meter voltage detection signal input from the FM/AM tuner unit
(A/D input)
3
NIL
I
Not used
4
KEYIN1
I
Key input terminal (A/D input)
5
KEYIN0
I
Key input terminal (A/D input)
6
RCIN0
I
Rotary remote commander key input terminal (A/D input)
7, 8
NIL
I
Not used
9
DSTSEL
I
Destination setting terminal (A/D input) (fixed at “L” in this set)
10
VREF+
I
Reference voltage (+5V) input terminal (for A/D converter)
11
VDD
—
Power supply terminal (+5V)
12
OSCOUT
O
Main system clock output terminal (18.432 MHz)
13
OSCIN
I
Main system clock input terminal (18.432 MHz)
14
VSS
—
Ground terminal
15
XIN
I
Sub system clock input terminal (32.768 kHz)
16
XOUT
O
Sub system clock output terminal (32.768 kHz)
17
MMOD
I
Selection signal of memory mode input terminal “L”: single chip mode
(fixed at “L” in this set)
18
LCDSO
O
Serial data output to the liquid crystal display driver
19
LCDCE
O
Chip enable signal output to the liquid crystal display driver “H” active
20
LCDCKO
O
Serial data transfer clock signal output to the liquid crystal display driver
21 to 23
NCO
O
Not used
24
SYSRST
O
Reset signal output to the SONY bus interface “L”: reset
25
BUSON
O
Bus on/off control signal output to the SONY bus interface “L”: bus on
26
KEYACK
I
Input of acknowledge signal for the key entry Acknowledge signal is input to accept function
and eject keys in the power off status On at input of “H”
27
NIL
I
Not used
28
BU-IN
I
Battery detection signal input from the SONY bus interface
“L” is input at low voltage
29
SIRCS
I
SIRCS remote control signal input terminal Not used
30, 31
NIL
I
Not used
32
NIH
I
Not used
33
RESET
I
System reset signal input from the reset signal generator and reset switch “L”: reset
“L” is input for several 100 msec after power on, then it changes to “H”
34
TUNON
O
Tuner system power supply on/off control signal output “H”: tuner power on
35
BEEP
O
Beep sound drive signal output to the power amplifier
36
PW_ON
O
Main system power supply on/off control signal output “H”: power on
37
FM_ON
O
FM power supply on/off control signal output “H”: FM power on
38
ACCIN
I
Accessory detection signal input “L”: accessory on
39
NCO
O
Not used
40
TELATT
I
Telephone attenuate signal input At input of “H”, the signal is attenuated by –20 dB
Not used
41
NIH
I
Not used
42
BUSSO
O
Serial data output to the SONY bus interface
43
BUSSI
I
Serial data input from the SONY bus interface
44
BUSCKO
O
Serial data transfer clock signal output to the SONY bus interface
Ver 1.1
