Hitachi 15LD2200 Service Manual page 22

Signal Pin Type
DOB4 109
DOB5 108
DOB6 100
DOB7 99
WR 195 I/O D5
RD 196 I/O D5
ROMOE 197
ROMWE 198
CS0 199 I/O D5
CS1 200 I/O D5
NMI 194
A1 193
A2 192
A3 191
A4 190
A5 189
A6 188
A7 183
A8 182
A9 181
A10 180
A11 179
A12 178
A13 177
A14 176
15" TFT TV Service Manual
I/O
SR5
I/O
SR5
I/O
SR5
I/O
SR5
Write Enable. Low indicates a write to external RAM or other devices.
Read Enable. Low indicates a read to external RAM or other devices.
OS ROM Output Enable. Low output indicates a read from external ROM.
OS ROM Write Enable. Low indicates a write to external ROM.
Miscellaneous Chip Select 0. Low selects external devices.
Miscellaneous Chip Select 1. When EXTRAMEN=0, low selects external devices.
Chip select for external RAM. When EXTRAMEN=1, low selects external RAM.
(RAMCS)
Non-Maskable Interrupt. A high input triggers a non-maskable interrupt to the on-chip
ID 5
microprocessor.
I/O
Microprocessor address bus output bits (19:1).
D5
I/O
D5
I/O
D5
I/O
D5
I/O
D5
I/O
D5
I/O
D5
I/O
D5
I/O
D5
I/O
D5
I/O
D5
I/O
D5
I/O
D5
I/O
D5
Function
20