Service manual

Pin
No.
Symbol
Signal
name
In/
Out
Function
95 RXD2 RXD2 In
CKDC Interface shift input
data
96 TXD2 TXD2 Out
CKDC Interface shift output
data
97 VSS NU In GND
98 EXTAL EXTAL In Crystal oscillator connection
99 XTAL XTAL In Crystal oscillator connection
100 VSS NU In GND
101 X X Out System clock
102 E NU Out Nu
103 AS AS Out Address strobe
104 RD RD Out Read
105 HWR WR Out Write
106 LWR LWR Out Nu
107 RFSH RFSH Out Refresh cycle
108 VCC VCC In +5V
109 MD0 MD0 In +5V (MODE 3)
110 MD1 MD1 In +5V (MODE 3)
111 MD2 MD2 In GND (MODE 3)
112 STBY STBY In +5V (Nu)
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