– 42 –
Pin No. Pin Name I/O Function
76 ESP-DATA O
Serial data output terminal Not used (open)
77 ESP-LT O
Serial data latch pulse signal output terminal Not used (open)
78 ESP-SENSE I
Sense serial data input terminal Not used (open)
79 XLASERCTL O
Laser diode on/off control signal output to the CXA1791N (IC501) “L”: laser on
80 DSP-SCOR I
Sub-code sync (S0+S1) detection signal input from the CXD2545Q (IC601)
81 OSC1 O
Main system clock output terminal (4.19 MHz)
82 OSC0 I
Main system clock input terminal (4.19 MHz)
83 GND —
Ground terminal (digital system)
84 XT I
Sub system clock input terminal Not used (fixed at “L”)
85 XTO O
Sub system clock output terminal Not used (open)
86 A-SELECT O
Selection signal output to the DATA, BCLK, LRCK signal select switch (IC301)
“L”: CD play, “H”: video CD play
87 XIRCTL O
Power supply on/off control signal for the remote control receiver (IC401) “L”: power on
88 SYS XMT RQ O
Communication request signal output to the MPEG audio/video decoder (IC901)
89 SYS RCV RDY O
Ready signal output to the MPEG audio/video decoder (IC901)
90 MPG XMT RQ I
Communication request signal input from the MPEG audio/video decoder (IC901)
91 ESS-DATAO O
Serial data output to the MPEG audio/video decoder (IC901)
92 ESS-DATAI I
Serial data input from the MPEG audio/video decoder (IC901)
93 ESS-CLK O
Serial data transfer clock signal output to the MPEG audio/video decoder (IC901)
94 RESET I
System reset signal input from the reset signal generator (IC702) “L”: reset
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”
95 TEST I
Service mode setting terminal The stop status is reset with the falling edge of input signal
“L”: service mode, Normally: “H”
96 DBB CTL2 O
MEGA BASS level control signal output terminal
“L”: MEGA BASS level-1, “H”: MEGA BASS level-2 Not used (open)
97
VDDL —
Power supply output for the liquid crystal display bias
98 to 100
VDD1 to VDD3 —
Power supply output for the liquid crystal display bias
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