8-bit
16-bit
32-bit
Serial Transfer
SEVERE
SAVEUR
Flash PROM
NVRAM
Interrupt
Controller
Real Time
Clock
CLExxx
DRAM
VGA
Demultiplexer
32-bit Extension
Connector
PCMCIA
Internal
Centronics
Small
Peripherals
External
Centronics
Floppy
Front Panel
Front Panel
LEDs
93xx-3
VIADUC
GRANDS
PETITS
PROFIL
CARDAN
Fig 4-2: Peripheral Decoding and Data Bus Size
Not shown in Fig.4-2, are a few GALs for miscellaneous functions (like DRAM
refreshing).
RASADE generates the RAS signals and the lower addresses for DRAM. It also
supports the signals needed for interleaved burst mode.
OCCASE generates the CAS signals for DRAM.
RAMEUR is the main sequencer for the DRAM , and handles the access precharge
and the refresh system.
BUDGET translates a 680x0 bus cycle into a PPC cycle, and handles fast cycles,
like accesses to DRAM or VGA.
RETINE counts the wait states and generates a bus error if no response after too
many (153) wait states. It also generates the system reset.
ASSISE decodes CPU space cycles and controls the bus sizer.
Theory of Operation
4-9
Содержание LC564DL
Страница 12: ...x Table of Contents ...
Страница 18: ...2 4 General Information ...
Страница 46: ...4 22 Theory of Operation 4 6 2 Power Supply Block Diagram ...
Страница 59: ...Performance Verification 5 13 ...
Страница 70: ...5 24 Performance Verification ...
Страница 95: ...Performance Verification 5 49 ...
Страница 115: ...Performance Verification 5 69 ...
Страница 122: ...5 76 Performance Verification Figure 5 14 1MΩ Ω Ω Ω Rise time Equipment Setup ...
Страница 148: ...6 14 Maintenance 6 6 4 Fan Problem ...
Страница 149: ...6 6 5 Power Supply Voltages Problem Maintenance 6 15 ...
Страница 150: ...6 16 Maintenance 6 6 6 Display Problem ...
Страница 151: ...6 6 7 Front Panel Controls Do not Operate Maintenance 6 17 ...
Страница 152: ...6 18 Maintenance 6 6 8 Remote Control GPIB or RS232 Problem ...
Страница 153: ...6 6 9 Performance Verification Fails Maintenance 6 19 ...
Страница 154: ...6 20 Maintenance 6 6 10 Floppy Disk Drive Problem ...
Страница 155: ...6 6 11 Graphic Printer Problem Maintenance 6 21 ...
Страница 156: ...6 22 Maintenance 6 6 12 Centronics Problem ...
Страница 157: ...6 6 13 Hard Disk Drive Problem Maintenance 6 23 ...
Страница 158: ...6 24 Maintenance ...
Страница 181: ...Mechanical Parts 8 1 8 Mechanical Parts Figure 8 1 LC564DL Cabinet ...
Страница 182: ...8 2 Mechanical Parts Figure 8 2 LC564DL Chassis Assembly ...
Страница 184: ...8 4 Mechanical Parts Figure 8 3 Power Supply Installation ...
Страница 185: ...Mechanical Parts 8 5 Figure 8 4 Lower Cover Assembly ...
Страница 187: ...Mechanical Parts 8 7 Figure 8 5 Lower Cover Assembly with CKTRIG Option ...
Страница 188: ...8 8 Mechanical Parts Figure 8 6 Lower Cover ...
Страница 190: ...8 10 Mechanical Parts Figure 8 7 CKTRIG Option ...
Страница 191: ...Mechanical Parts 8 11 Figure 8 8 Rear Panel Assembly ...
Страница 193: ...Mechanical Parts 8 13 Figure 8 9 900079 Main Board Assembly ...
Страница 194: ...8 14 Mechanical Parts Figure 8 10 900079 Main Board Assembly ...
Страница 196: ...8 16 Mechanical Parts Figure 8 11 Upper Shield Assembly ...
Страница 197: ...Mechanical Parts 8 17 Figure 8 12 Front Frame Assembly ...
Страница 199: ...Mechanical Parts 8 19 Figure 8 13 Keypad Assembly ...
Страница 200: ...8 20 Mechanical Parts Figure 8 14 Fan Assembly ...
Страница 202: ...8 22 Mechanical Parts Figure 8 15 Graphic Printer Assembly ...
Страница 203: ...Mechanical Parts 8 23 Figure 8 16 Upper Cover Assembly ...
Страница 205: ...Mechanical Parts 8 25 Figure 8 17 Hard Disk Assembly ...
Страница 206: ...8 26 Mechanical Parts Figure 8 18 Centronics VGA Interface Assembly ...
Страница 207: ...Mechanical Parts 8 27 Figure 8 19 Floppy Disk Assembly ...
Страница 209: ...Mechanical Parts 8 29 Figure 8 20 LC564DL Dimensions ...
Страница 210: ...8 30 Mechanical Parts Figure 8 21 LC564DL Packaging ...