Sony XES-Z50, Service Manual

Page: 59 / 153

– 59 –
Pin No. Pin Name I/O Function
86 AVSS — Ground terminal (for A/D conversion)
87 BUS ON I Bus on/off detection interrupt signal input from the system controller (IC501) “L”: bus on
88 SRAM-CS O Chip enable signal output to the S-RAM (IC805)
89 DEC-CS O Chip enable signal output terminal Not used
90 DEC-INT I
Interrupt signal input terminal Demodulation data are read by detecting a falling edge
Not used
91 ROM-CS O Chip enable signal output to the flash memory (IC804)
92 VSS — Ground terminal
93 LCD-BLON O Output of power on/off control signal for the back light in display unit “H”: power on
94 LINK-OFF O Bus on/off control signal output to the bus interface (IC503) (for SONY bus) “L”: bus on
95 DEC-ON O
Output of power on/off control signal for the external device
“H”: power on Not used (open)
96 DEC-CLR O
Reset signal output terminal “L”: reset
97 A23 O
Address signal output terminal Not used (open)
98 A22 O
Address signal output terminal Not used (open)
99 X.TEST I
100 A20 O
Address signal output terminal Not used (open)
Input of personal computer connection detection
“H”: When display panel is attached at front panel position
“L”: When personal computer communication accessory is attached