HCD-EP50LIV
6-15. IC PIN FUNCTION DESCRIPTION
" DISPLAY BOARD IC301 ?PD78064GF-187-3BA (SYSTEM CONTROLLER, LIQUID CRYSTAL DISPLAY DRIVER)
Pin No.Pin NameI/ODescription
1GENERALDOUTOSerial data output to the FM/AM PLL (U2), LC75392 (U6) and 94HC4094 (U15)
Serial data transfer clock signal output to the FM/AM PLL (U2), LC75392 (U6) and 94HC4094
2GENERALCLKO
(U15)
3I2CDATAI/OTwo-way data bus with the EEPROM (IC302)
4STEREOIFM stereo detection signal input from the LA1837 (U1) OL�: stereo
5I2CCLKOClock signal output to the EEPROM (IC302)
6ICNInternal connection terminal (connected to ground)
7X2OMain system clock output terminal (4.194304 MHz)
8X1IMain system clock input terminal (4.194304 MHz)
9VDDNPower supply terminal
10XT1ISub system clock input terminal (32.768 kHz) Not used (open)
11XT2OSub system clock output terminal (32.768 kHz) Not used (open)
System reset signal input from the reset signal generator (IC304) OL�: reset
12RESETI
For several hundreds msec. after the power supply rises, OL� is input, then it changes to OH�
13REMOTEIRemote control signal input from the remote control receiver (X302)
14PWRFAILIPower failure detection signal input terminal OL�: power failure, OH�: power on
15RDSCLKISerial data transfer clock signal input from the RDS decoder (IC305) Not used
16CDCLKISerial data transfer clock signal input from the CD block
17SENSORBITape sensor input terminal Not used (open)
18SENSORAITape play/rec detect sensor input terminal OL� input when the tape play/rec detect
19CD DOOR SWICD lid open/close detect switch (SW300) input terminal OL�: CD lid is closed
20 to 23CDIN2 to CDIN5 INot used (open)
Whether a music is present or not from BA335 (U14) is detected at auto music sensor
24AMSI
OL�: music is not present, OH�: music is present
25ENCODERAIJog dial pulse input from the rotary encoder (X303 VOLUME) (A phase input)
26ENCODERBIJog dial pulse input from the rotary encoder (X303 VOLUME) (B phase input)
27AVSSNGround terminal
Key input terminal (A/D input) SW301 to SW305 (I/1, TUNER, TAPE, CD, PLAY MODE
28KEY1I
RDS/DIR) keys input (RDS: used for the AEP, UK models)
Key input terminal (A/D input)
29KEY2I
SW306 to SW309 (x, X, Y, TUNER MEM ENTER) keys input
30KEY3IKey input terminal (A/D input) SW310 to SW312 (PRESET +/�, DISPLAY) keys input
Key input terminal (A/D input)
31KEY4I
SW313 to SW315 (TUNING � . m, TUNING + M >, MUSIC MENU) keys input
32KEY5IKey input terminal (A/D input) SW316, SW317 (MEGA BASS, z) keys input
33ANALYZERIAnalyzer level detection signal input terminal (A/D input) Not used (open)
34TUNEDITuning detection signal input from the LA1837 (U1) (A/D input) OL�: tuned
35RDSDATAISerial data input from the RDS decoder (IC305) Not used
36AVDDNPower supply terminal
37AVREFIReference voltage input terminal
38, 39CDOUT1, CDOUT2 ONot used (open)
40VSSNGround terminal
41CDOUT3ONot used (open)
42CDDATAI/OTwo-way data bus with the CD block
43CDRESETOReset signal output to the CD block OL�: reset
31 |
ACEC
SONY
