DVR-310-S
110
1
2
3
4
1
2
3
4
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)
−