Pioneer DVR-520H-S, Руководство по обслуживанию

Страница: 141 / 174

DVR-520H-S
141
5 6 7 8
5 6
7
8
C
D
F
A
B
E
(a) Parallel interface pins
(5) Host interface pins
No. Pin Name I/O Function Active
117 CS I Chip select input of parallel interface L
119 RWZ I
Read and write control input of parallel interface
ISA type bus, SH-1 bus: Write strobe
68000 bus : Read/write selection signal
L
120 IOR I
IO read control input of parallel interface
ISA type bus, SH-1 bus : Read strobe
68000 bus : Data strobe (DS)
L
123 IOCHRDY O Ready output of parallel interface L
116-107 AD [ 10 : 1] I Address input of parallel interface
−
143-141, 139-132,
130-128, 126, 125
P_D [15 : 0] I/O Data input/output of parallel interface
−
(b) Serial interface pins
No. Pin Name I/O Function Active
149 TXD I/O Serial transmission data output of unsynchronous serial interface (UART)
−
150 RXD I/O Serial transmission data input of unsynchronous serial interface (UART)
−
(c) Others
No. Pin Name I/O Function Active
124 INT O Interrupt output to the outside H
106, 105 PSSEL [1 : 0] I
Parallel/serial interface selection
Input signal to select the outside interface which of parallel interface or serial interface.
PSSEL [1 : 0] Select
00 Serial interface (UART)
01 Parallel interface (ISA type bus)
10 Parallel interface (68000 bus)
11 Parallel interface (SH-1 bus)
−