Pioneer XD-DV350, Service Manual

Page: 90 / 106

XV-DV350
90
1 2 3 4
1 2 3 4
C
D
F
A
B
E
No. Name Alt. I/O Function
90 ALE
Inout, 2-16MA,
SR, PU, SMT
Microcontroller address latch enable
79 IOOE# Inout, 2-16MA, SR, SMT Flash output enable, active low / IO
66 IOWR# Inout, 2-16MA, SR, SMT Flash write enable, active low / IO
77 IOCS#
Inout, 2-16MA,
SR, PU, SMT
Flash chip select, active low / IO
95 UWR#
Inout, 2-16MA,
SR, PU, SMT
Microcontroller write strobe, active low
96 URD#
Inout, 2-16MA,
SR, PU, SMT
Microcontroller read strobe, active low
98 UP1_2 Inout, 4MA, SR, PU, SMT Microcontroller port 1-2
99 UP1_3 Inout, 4MA, SR, PU, SMT Microcontroller port 1-3
100 UP1_4 Inout, 4MA, SR, PU, SMT Microcontroller port 1-4
101 UP1_5 Inout, 4MA, SR, PU, SMT Microcontroller port 1-5
102 UP1_6 SCL Inout, 4MA, SR, PU, SMT
Microcontroller port 1-6
I
2
C clock pin
103 UP1_7 SDA Inout, 4MA, SR, PU, SMT
Microcontroller port 1-7
I
2
C data pin
104 UP3_0 RXD Inout, 4MA, SR, PU, SMT
Microcontroller port 3-0
8032 RS232 RXD
105 UP3_1 TXD Inout, 4MA, SR, PU, SMT
Microcontroller port 3-1
8032 RS232 TXD
106 UP3_4 RXD
SCL Inout, 4MA, SR, PU, SMT
Microcontroller port 3-4
Hardwired RD232 RXD
I
2
C clock pin
107 UP3_5 TXD
SDA Inout, 4MA, SR, PU, SMT
Microcontroller port 3-5
Hardwired RD232 TXD
I
2
C data pin
111 IR Input, SMT IR control signal input
112 INT0#
Inout, 2-16MA,
SR, PU, SMT
Microcontroller external interrupt 0, active low
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