Sony Ericsson CDP-CX220 - Manual (Page 41)

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7-12. IC PIN FUNCTION DESCRIPTION
• MAINN BOARD IC501 CXP84340-075Q (SYSTEM CONTROLLER)
Pin No. Pin Name I/O Function
1 to 5 A3 to A7 O
6 A12 O
7 A14 O Address signal output to the static RAM (IC502)
8 to 11 A11 to A8 O
12 A13 O
13 WE O Data write enable signal output to the static RAM (IC502) “L” active
14 CE O Chip enable signal output to the static RAM (IC502) “H” active
15 KBCOUT O Serial data transfer clock signal output terminal Not used (open)
16 KBDOUT O Serial data output terminal Not used (open)
17 KBDIN I Serial data input terminal Not used (open)
18 FLDATA O Serial data output to the FL driver (IC701) and LED driver (IC702)
19 FLCLK O Serial data transfer clock signal output to the FL driver (IC701) and LED driver (IC702)
20 LEDLT O Serial data latch pulse output to the LED driver (IC702) “L” active
21 TBLL O Table motor drive signal (counterclockwise) output to the CXA1291P (IC503) “H” active
22 TBLR O Table motor drive signal (clockwise) output to the CXA1291P (IC503) “H” active
23 DRIN O Door motor drive signal (door close) output to the CXA1291P (IC503) “H” active
24 DROUT O Door motor drive signal (door open) output to the CXA1291P (IC503) “H” active
25 ADJ I Setting terminal for the test mode “L”: ADJ mode, Normally: fixed at “H”
26 LDIN O Loading motor drive signal (load-in direction) output to the CXA1291P (IC503) “H” active
27 LDOUT O Loading motor drive signal (load-out direction) output to the CXA1291P (IC503) “H” active
28 BUSOUT O Sircs remote control signal output for the S-LINK CONTROL A1 “H” active
29 SMUTE O Muting on/off control signal output terminal “H” active Not used (pull up)
30 RESET I
System reset signal input from the reset signal generator (IC505) “L”: reset
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”
31 EXTAL I Main system clock input terminal (10 MHz)
32 XTAL O Main system clock output terminal (10 MHz)
33 VSS — Ground terminal
34 TX O Sub system clock output terminal Not used (open)
35 TEX I Sub system clock input terminal Not used (fixed at “L”)
36 AVSS — Ground terminal (for A/D converter)
37 AVREF I Reference voltage (+5V) input terminal (for A/D converter)
38 D.SENS I Inputs the disc sensor (Q801) detection signal (A/D input)
39 DOORSW I Door open/close detect switch (S810) input (A/D input) “L”: open
40 CD1/2/3 I
COMMAND MODE switch (S901) input terminal (A/D input)
“L”: CD1, “H”: CD3 (CD2: center voltage input)
41 SW I Destination setting terminal (A/D input) Fixed at “L” in this set
42 KEY3 I
Key input terminal (A/D input) p, P, ·, CLEAR, CHECK, ± AMS, ≠ AMS, PUSH
ENTER keys input and rotary encoder jog dial pulse input (S611 to 617 and RE601)
43 KEY2 I
Key input terminal (A/D input) § OPEN/CLOSE, INPUT, MEMO SEARCH keys input and
rotary encoder jog dial pulse input (S621 to 623 and RE601)
44 KEY1 I
Key input terminal (A/D input)
I/
u, TIME/TEXT, GROUP FILE, GROUP 8/7/6/5 keys input (S731 to 737)
45 KEY0 I
Key input terminal (A/D input)
REPEAT, PROGRAM, SHUFFLE, CONTINUE, GROUP 4/3/2/1 keys input (S721 to 728)
46 BUSIN I Sircs remote control signal input for the S-LINK CONTROL A1 “L” active
47 AMUTE O Muting on/off control signal output to the CXD2587Q (IC101) “H”: muting on