Sony WX-7700MDX Service Manual page 77

Pin No. Pin Name
71 to 78 NCO
79 FL W
80 FWE
81 RES
82 NMI
83 STBY
84 VCC
85 XTAL
86 EXTAL
87 VSS
88 NCO
89 VCC
90 to 96 NCO
97 UNISO
98 UNISI
99, 100 VSS
101 UNICKI
102 NCO
103 AVCC
104 VREF
105 LVL L
106 LVL R
107 to 112 NIL
113 AVSS
114 VSS
NCO
115 to 118
119 PWM CYCLE
PWM B,
120 to 122
PWM G,
PWM R
MD0 to MD2
123 to 125
NCO
126 to 128
I/O
O Not used
O
Control signal output terminal when writing into internal flash memory data Not used
I
Enable signal input terminal when writing into internal flash memory data Not used
System reset signal input from the master controller, reset signal generator and reset switch
I
"L": reset "L" is input for several 100 msec after power on, then it changes to "H"
Non maskable interrupt input terminal
I
Connect to the back-up power supply detection circuit (BU IN (pin ef) ) in this set
Hard ware standby signal input terminal
I
"L": hard ware standby mode (fixed at "H" in this set)
—
Power supply terminal (+5V)
O System clock output terminal (18.432 MHz)
I System clock input terminal (18.432 MHz)
—
Ground terminal
O Not used
—
Power supply terminal (+5V)
O Not used
O
Serial data output to the SONY bus interface IC
I
Serial data input from the SONY bus interface IC
—
Ground terminal
I Serial clock signal input for the bus interface from the master controller
O Not used
—
Power supply terminal (+5V) (for the A/D converter and D/A converter)
I
Reference voltage (+5V) input terminal (for the A/D converter and D/A converter)
I Analog signal input for front side (L-ch side) from the CXD2727Q
I
Analog signal input for front side (R-ch side) from the CXD2727Q
I
Not used
—
Ground terminal (for the A/D converter and D/A converter)
— Ground terminal
O Not used
O PWM synchronizing generation output terminal Not used
LCD back light LED drive signal output terminal
O
Color switching by RGB composition
I
Setting terminal for the CPU operational mode
O Not used
Description
WX-7700MDX
77