22
Signal
Pin
Type
Function
DOB2
111
I/O
SR5
DOB3
110
I/O
SR5
DOB4
109
I/O
SR5
DOB5
108
I/O
SR5
DOB6
100
I/O
SR5
DOB7
99
I/O
SR5
WR
195
I/O D5 Write Enable. Low indicates a write to external RAM or other devices.
RD
196
I/O D5 Read Enable. Low indicates a read to external RAM or other devices.
ROMOE
197
OS
ROM Output Enable. Low output indicates a read from external ROM.
ROMWE
198
OS
ROM Write Enable. Low indicates a write to external ROM.
CS0
199
I/O D5 Miscellaneous Chip Select 0. Low selects external devices.
CS1
200
I/O D5
Miscellaneous Chip Select 1. When EXTRAMEN=0, low selects external devices.
Chip select for external RAM. When EXTRAMEN=1, low selects external RAM.
(RAMCS)
NMI
194
ID 5
Non-Maskable Interrupt. A high input triggers a non-maskable interrupt to the on-chip
microprocessor.
A1
193
I/O
D5
A2
192
I/O
D5
A3
191
I/O
D5
A4
190
I/O
D5
A5
189
I/O
D5
A6
188
I/O
D5
A7
183
I/O
D5
A8
182
I/O
D5
A9
181
I/O
D5
A10
180
I/O
D5
A11
179
I/O
D5
Microprocessor address bus output bits (19:1).
Summary of Contents for 17MB18
Page 1: ......
Page 15: ...11 ...
Page 52: ...9 CIRCUIT DIAGRAMS 9 1 17MB18 5 Main Board Schematics ...
Page 53: ......
Page 54: ......
Page 55: ......
Page 56: ......
Page 57: ...72 17 TFT TV Service Manual 9 2 Keypad Schematics 17TK26 ...
Page 58: ...73 17 TFT TV Service Manual 9 3 IR LED Board Schematics 17LD23 ...
Page 59: ...74 17 TFT TV Service Manual 9 4 Remote Controller Schematics 11UK10 2 ...
Page 60: ...9 6 DIGITAL MODULE SCHEMATIC 75 ...
Page 61: ...76 ...
Page 62: ...77 ...
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Page 66: ...17MB18 5 TOP Print Lay outs Analog Board ...
Page 67: ... 17MB18 5 TOPmask ...
Page 68: ...17MB18 5 TOPsilk ...
Page 69: ... 17MB18 5 inner1 ...
Page 70: ...17MB18 5 inner2 ...
Page 71: ...17MB18 5 BOT ...
Page 72: ...17MB18 5 BOTTOMMASK ...
Page 73: ...17MB18 5 BOTTOMSILK ...