Ic Pin Function Description - Sony HCD-EP30 Service Manual

QQ
3 7 63 1515 0

6-11. IC PIN FUNCTION DESCRIPTION

• DISPLAY BOARD IC601 µPD753016AGC-F31-3B9 (SYSTEM CONTROLLER, LIQUID CRYSTAL DISPLAY DRIVER)
Pin No. Pin Name
1 to 20 S12 to S31
21 to 24 COM0 to COM3
25 BIAS
26 to 28 VLC0 to VLC2
29 TUNER
30 TAPE
31 CD
TIMER STATUS
32
33 VSS
34 CD-RESET
35 SURROUND
36 PLL CL
37 PLL DI
38 TUNER SD
39 CLOCK
40 DATA
41 STEREO
42 CD CLOCK
TE
L 13942296513
43 RDS CLOCK
44 REMOTE
45 SYNCRO
46 MUTE
47 PLLCE
48 CE
49 SHRST
50 RDS DATA
51 PSW
52 BASS BOOST
53 DPSW2/SLEND
54 VDD
55 XT1
56 XT2
57 IC
58 X1
59 X2
60 PLLDO SELECT
61 CD DATA
62 NC
www
63 12/24H SELECT
KEY R0 to
64 to 67
KEY R4
.
68 CPU RESET
69 to 80 S0 to S11
http://www.xiaoyu163.com
I/O
O Segment drive signal output to the liquid crystal display (D621)
O Common drive signal output to the liquid crystal display (D621)
O Bias output for the liquid crystal display drive
Input terminal for doubler circuit capacitor connection to develop liquid crystal display drive
I
voltage
O Power on/off control signal output for the tuner section "L": power on
O Audio line muting on/off control signal output "L": muting on
O Power on/off control signal output for the CD section "L": power on
O LED drive signal output of the TIMER indicator (D619) "L": LED on
— Ground terminal
O Reset signal output to the CD section "L": reset
O Not used (pull up)
O PLL serial data transfer clock signal output to the FM/AM PLL (IC102)
O PLL serial data output to the FM/AM PLL (IC102)
I FM and AM signal meter voltage detection input from the LA1823 (IC101)
O Serial data transfer clock signal output to the LC75392 (IC203)
O Serial data output to the LC75392 (IC203)
I FM stereo detection signal input from the LA1823 (IC101) "L": stereo
I Serial data transfer clock signal input from the CD section
Serial data transfer clock signal input from the RDS decoder (IC604)
I
(RDS decoder is HCD-EP40 only)
I Remote control signal input from the remote control receiver (RM601)
I Recording on detection signal input
O Audio line muting on/off control signal output "H": muting on
O PLL chip enable signal output to the FM/AM PLL (IC102) "H" active
O Chip enable signal output to the LC75392 (IC203) "H" active
O Not used (open)
I Serial data input from the RDS decoder (IC604) (RDS decoder is HCD-EP40 only)
O System power on/off control signal out "H": power on
O Mega bass on/off selection signal output "H": mega bass on
I
CD lid open/close detection switch (SW600) input terminal "L": CD lid is closed
— Power supply terminal
I Power failure detection input terminal "L": power failure, "H": power on
O Not used (open)
— Internal connection terminal (connected to power supply)
I Main system clock input terminal (6 MHz)
O Main system clock output terminal (6 MHz)
I PLL serial data input from the FM/AM PLL (IC102)
I/O Two-way data bus with the CD section
— Not used (open)
I
Not used (fixed at "H")
x ao u163
I Key return signal input from the key matrix "L" input when key pressing y
i
System reset signal input from the reset signal generator (IC603) "L": reset
I
For several hundreds msec. after the power supply rises, "L" is input, then it changes to "H"
O Segment drive signal output to the liquid crystal display (D621)
http://www.xiaoyu163.com
2 9
8
Description
Q Q
3 6 7 1 3 1 5
co
.
HCD-EP30/EP40
9 4 2 8
0 5 8 2 9 9 4 2 8
m
9 9
9 9
25