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(5) Host interface pins
(a) Parallel interface pins
| No. | PinName
| VO |
za
ae
ee Chip select input of parallel interface
Read and write control input of parallel interface
ISA type bus, SH-1 bus: Write strobe
68000 bus : Read/write selection signal
!O read control input of parallel interface
ISA type bus, SH-1 bus : Read strobe
68000 bus : Data strobe (DS)
123
IOCHRDY
Ready output of parallel interface
116-107
AD[ 10:1]
Address input of parallel interface
143-141, 139-132,
j
j
190-128, 126, 125 P_D [15 : 0]
Data input/output of parallel interface
(b) Serial interface pins
VO_|
Serial transmission data output of unsynchronous serial interface (UART)
eee
150
RXD
Serial transmission data input of unsynchronous serial interface (UART)
ft ee
(c) Others
interrupt output to the outside
Parallel/serial interface selection
input signal to select the outside interface which of parailel interface or serial interface.
PSSEL [1 : 0]
Select
:
00
Serial interface (UART)
TG Oe | Perea
re
of
Parallel interface (ISA type bus)
10
Parallel interface (68000 bus)
4
Parallel interface (SH-1 bus)
125
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