Table Of Contents - GE IMP2B Hardware Reference Manual

1 • Overview ........................................................................................................................................................ 8
1.1 Features ..................................................................................................................................................................................................... 8
2 • Configuration ........................................................................................................................................... 10
2.1 Link Functions ....................................................................................................................................................................................... 10
2.2 Suggested Link Settings .................................................................................................................................................................. 11
2.3 Factory Test Link (P1)......................................................................................................................................................................... 11
2.4 Flash Boot Image Select Links (P2 1-2 and 3-4) ................................................................................................................... 11
2.5 Backplane Flash Programming Link (P2 5-6) ......................................................................................................................... 12
2.6 Flash Protection Password Unlock Link (P3 1-2) .................................................................................................................. 12
2.7 Boot Flash Write Enable Link (P3 3-4) and User Flash Write Enable Link (P3 5-6) ............................................... 13
2.8 JTAG Scanbridge Enable Link (P4 1-2) ...................................................................................................................................... 13
2.9 Backplane JTAG Buffer Enable Link (P4 3-4) .......................................................................................................................... 14
2.10 Backplane JTAG Auto-Write Enable Link (P4 5-6) ............................................................................................................. 14
2.11 Force 33 MHz Operation Link (P5 1-2) .................................................................................................................................... 14
2.12 NVRAM/Serial EEPROM Write Enable Link (P5 3-4) ........................................................................................................... 15
2.13 Spare Link (P5 5-6) ........................................................................................................................................................................... 15
2.14 Special Linking Requirements .................................................................................................................................................... 15
3 • Functional Description ......................................................................................................................... 16
3.1 PowerPC Processor ............................................................................................................................................................................ 16
3.2 Host Bridge ............................................................................................................................................................................................ 17
3.3 RAM ............................................................................................................................................................................................................ 18
3.4 Non-Volatile RAM (NVRAM) ............................................................................................................................................................. 18
3.5 Flash Memory ....................................................................................................................................................................................... 19
3.5.1 Boot Flash ........................................................................................................................................................................................................... 19
3.5.2 User Flash ........................................................................................................................................................................................................... 20
3.5.3 Flash Sector Protection ................................................................................................................................................................................ 20
3.6 Memory Map set up by VxWorks (as seen by CPU) ............................................................................................................ 21
3.7 PMC Site ................................................................................................................................................................................................... 21
3.7.1 PMC Rear I/O Tracking.................................................................................................................................................................................. 22
3.7.2 'Peripheral Only' Mode .................................................................................................................................................................................. 22
3.7.3 'Limited Host, Full PMC User I/O' Mode ................................................................................................................................................. 22
3.7.4 'Alternative PMC I/O' Mode ......................................................................................................................................................................... 23
3.8 Serial Ports ............................................................................................................................................................................................. 24
3.9 Ethernet ................................................................................................................................................................................................... 25
3.10 USB 2.0 .................................................................................................................................................................................................. 25
3.11 Timers .................................................................................................................................................................................................... 25
3.12 Watchdog Timer ............................................................................................................................................................................... 25
3.13 DMA Engines ....................................................................................................................................................................................... 26
3.14 I C Interface ........................................................................................................................................................................................ 26
2
3.14.1 Serial EEPROM ................................................................................................................................................................................................ 26
3.14.2 Real-Time Clock ............................................................................................................................................................................................ 26
3.14.3 Elapsed Time Indicator .............................................................................................................................................................................. 27
3.14.4 Temperature Sensing ................................................................................................................................................................................. 27
(continued overleaf)
4 IMP2B 3U cPCI Single Board Computer
Contents
Publication No. IMP2B-0HH/5