Pioneer DVR-520H-S Service Manual page 141

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