IBM PowerPRS Q-64G
Preliminary
Packet Routing Switch
6. Reset, Initialization, and Operation ....................................................................... 155
6.1 Reset Sequence .......................................................................................................................... 155
6.2 Speed-Expansion Bus Initialization .......................................................................................... 155
6.2.1 Synchronizing the Speed-Expansion Bus Links .................................................................. 156
6.2.2 Setting the Speed-Expansion Bus Data Latency ................................................................. 156
6.2.2.1 The Source of Data Latency ......................................................................................... 156
6.2.2.2 Setting Data Latency .................................................................................................... 157
6.3 Port Initialization and Operation ................................................................................................ 159
6.3.1 Initializing Unilink Ports ........................................................................................................ 159
6.3.2 Deactivating Unilink Ports .................................................................................................... 160
6.4 Logic BIST Execution Sequence ............................................................................................... 160
6.5 Memory BIST Execution Sequence ........................................................................................... 161
7. I/O Definitions and I/O Timing ................................................................................ 163
7.1 I/O Definitions .............................................................................................................................. 163
7.2 I/O Timing ..................................................................................................................................... 166
7.2.1 Unilink Signals ..................................................................................................................... 166
7.2.2 SHI Signals .......................................................................................................................... 166
7.2.3 SyncIn/SyncOut Signals ...................................................................................................... 167
8. Data and Flow Control Latencies .......................................................................... 169
8.1 Data Packet Transmission ......................................................................................................... 169
8.2 Send Grant Off to Egress Idle Packet ....................................................................................... 169
8.3 Ingress Data Packet Received to Output Queue Grant Off ..................................................... 170
8.4 Ingress Data Packet Received to Memory Grant Off ............................................................... 171
8.5 Ingress Data Packet Received to Multicast Grant Off ............................................................. 171
9. Pin Information ........................................................................................................ 173
10. Electrical Characteristics ..................................................................................... 185
10.1 General Information .................................................................................................................. 185
10.2 Internal PLL AVDD and AGND Pins ......................................................................................... 187
10.3 InfiniBand Compatibility ........................................................................................................... 188
11. Mechanical Information ........................................................................................ 189
12. Glossary ................................................................................................................. 191
13. Related Documents .............................................................................................. 197
Revision Log ............................................................................................................... 199
prsq-64g.01TOC.fm
December 20, 2001
Contents
Page 7 of 199
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