38
XR-M510
7-16.
IC PIN FUNCTION DESCRIPTION
•
MAIN BOARD IC601 MB90574BPMT-G-257-BND (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1
NC
O
Not used (open)
2
AMSIN
I
Whether a music is present or not from CXA2510AQ (IC401) is detected at auto music sensor
“L”: music is present, “H”: music is not present
3
AMSON
O
Tape auto music sensor control signal output to the CXA2510AQ (IC401)
“L” is output to lower the gain for audio level at FF/REW mode
4
SP LATCH
O
Serial data latch pulse output for spectrum analyzer section to the liquid crystal display drive
controller (IC607)
5
ATT
O
Audio line muting on/off control signal output terminal “H”: muting on
6
SYSRST
O
System reset signal output to the liquid crystal display drive controller (IC607) and SONY bus
interface (IC501) “L”: reset
7
N/R
O
Forward/reverse direction control signal output to the CXA2510AQ (IC401)
“L”: forward direction, “H”: reverse direction
8
VCC
—
Power supply terminal (+5V)
9
NIL
I
Not used (fixed at “L”)
10
E2PSIO
I/O
Two-way data bus for tuner EEPROM with the FM/AM tuner unit (TUX100)
11
E2PCKO
I/O
Two-way bus clock signal for tuner EEPROM with the FM/AM tuner unit (TUX100)
12
FLS SI
I
Flash memory write data input from the liquid crystal display drive controller (IC607)
13
FLS SO
O
Flash memory write data output to the liquid crystal display drive controller (IC607)
14
BUS-ON
O
Bus on/off control signal output to the liquid crystal display drive controller (IC607) and SONY
bus interface (IC501) “L”: bus on
15
BEEP
O
Beep sound drive signal output terminal
16
TELATT
I
Telephone detection signal input terminal At input of “H”, the signal is attenuated by –20 dB
17
UNISI
I
Serial data input from the SONY bus interface (IC501)
18
UNISO
O
Serial data output to the SONY bus interface (IC501)
19
UNICKO
O
Serial clock signal output to the liquid crystal display drive controller (IC607) and SONY bus
interface (IC501)
20
IFWIDTH
O
Not used (open)
21, 22
NC
O
Not used (open)
23
MTLOUT
O
METAL on/off control signal output to the CXA2510AQ (IC401) “H”: METAL on
24
SIRCS
I
Sircs remote control signal input from the remote control receiver (IC900, 903)
25
DSPSI
I
Not used (open)
26
DSPSO
O
Not used (open)
27
DSPCKO
O
Not used (open)
28
DSPPLL
O
Not used (open)
29
DSPMST
O
Not used (open)
30
SHIFT
O
Not used (open)
31
VOLATT
O
Pre amplifier muting on/off control signal output to the electrical volume (IC100)
“L”: muting on
32
TUATT
O
Muting on/off control signal output of the FM/AM tuner signal “L”: muting on
33
VSS
—
Ground terminal
34
C
—
Connected to coupling capacitor for the power supply
35
DSPLAT
O
Not used (open)
36
DSPRST
O
Not used (open)
37
ANT CUT
O
Tuner system power supply on/off control signal output terminal “H”: tuner power on
Not used (open)
38
DVCC
—
Power supply terminal (+5V) (for D/A converter)
39
DVSS
—
Ground terminal (for D/A converter)
