Ic Pin Function Description - Sony XR-CA630X Service Manual

XR-CA630X
Ver 1.1

6-10. IC PIN FUNCTION DESCRIPTION

• MAIN BOARD IC501 MN101C49KSB1 (SYSTEM CONTROLLER)
Pin No. Pin Name
1 VREF–
2 VSM
3 NIL
KEYIN1
4
KEYIN0
5
6 RCIN0
QUALITY
7
MPTH
8
9 DSTSEL
10 VREF+
VDD
11
OSCOUT
12
OSCIN
13
14 VSS
XI
15
XO
16
17 MMOD
18 LCDSO
LCDCE
19
LCDCKO
20
21 NCO
22 SIRCS_RESET
23 LCUBE_SEL
24 SYSRST
25 BUSON
26 KEYACK
27 DAVN
28 BUIN
29
SIRCS
30, 31 NIL
32 NIH
33 RESET
34
TUNON
35
BEEP
36 PW_ON
37 NCO
38 ACCIN
39
NCO
24
I/O
I
Reference voltage (0V) input terminal (for A/D converter)
FM and AM signal meter voltage detection signal input from the FM/AM tuner unit (TU1)
I
(A/D input)
I Not used (fixed at "L")
Key input terminal (A/D input) LSW902, LSW905 to LSW911, S902 to S905
I (MENU, SOUND, ENTER, S SCROLL, PTY D DISPLAY, LIST, AF, TA, > M SEEK+,
. m SEEK–, DISC/PRESET+, DISC/PRESET– keys input)
Key input terminal (A/D input) LSW901, LSW903, LSW904, LSW914 to LSW919, S906, S907
I
(OFF, SOURCE, MODE o, SHUF 6, 5, 4, 3 REP, 2, 1 keys input)
I Rotary remote commander key input terminal (A/D input)
I Noise level detection signal input at SEEK mode (A/D input)
I Multi-path detection signal input from the RDS decoder (IC51) (A/D input)
I Destination setting terminal
I Reference voltage (+5V) input terminal (for A/D converter)
—
Power supply terminal (+5V)
O Main system clock output terminal (18.432 MHz)
I Main system clock input terminal (18.432 MHz)
— Ground terminal
I
Sub system clock input terminal (32.768 kHz)
O
Sub system clock output terminal (32.768 kHz)
I
Selection signal of memory mode input terminal "L": single chip mode (fixed at "L")
O Serial data output to the liquid crystal display driver (IC900)
O Chip enable signal output to the liquid crystal display driver (IC900) "H" active
O Serial data transfer clock signal output to the liquid crystal display driver (IC900)
O Not used (open)
O SIRCS reset signal output terminal Not used (open)
I Destination setting terminal "H": L-cube model Fixed at center voltage in this set
O
Reset signal output to the SONY bus interface (IC581) "L": reset
O Bus on/off control signal output to the SONY bus interface (IC581) "L": bus on
Input of acknowledge signal for the key entry Acknowledge signal is input to accept function
I
and eject keys in the power off status On at input of "H"
Synchronized detection signal of RDS data block input from the RDS decoder (IC51)
I
"H" active
Battery detection signal input from the SONY bus interface (IC581)
I
"L" is input at low voltage
I
SIRCS remote control signal input from the remote control receiver (IC971)
I Not used (fixed at "L")
I Not used (fixed at "H")
System reset signal input from the reset signal generator (IC551) and reset switch (S551)
I
"L": reset "L" is input for several 100 msec after power on, then it changes to "H"
O Tuner system power supply on/off control signal output "H": tuner power on
O Beep sound drive signal output to the power amplifier (IC751)
O Main system power supply on/off control signal output "H": power on
I Not used (open)
I Accessory detection signal input "L": accessory on
O Not used (open)
Description