IDT 89HPES24N3A, User Manual

Page: 9 / 168

IDT Table of Contents
PES24N3A User Manual iii April 10, 2008
Notes
Hot-Plug and Hot-Swap
Introduction ..................................................................................................................................... 8-1
Hot-Plug I/O Expander ........................................................................................................... 8-4
Hot-Plug Interrupts and Wake-up ........................................................................................... 8-4
Legacy System Hot-Plug Support .......................................................................................... 8-4
Hot-Swap ........................................................................................................................................ 8-6
Configuration Registers
Introduction ..................................................................................................................................... 9-1
Upstream Port (Port 0) ........................................................................................................... 9-3
Downstream Ports (Ports 2 and 4) ......................................................................................... 9-8
Register Definitions....................................................................................................................... 9-11
Type 1 Configuration Header Registers ............................................................................... 9-11
PCI Express Capability Structure ......................................................................................... 9-21
Power Management Capability Structure ............................................................................. 9-33
Message Signaled Interrupt Capability Structure ................................................................. 9-34
Subsystem ID and Subsystem Vendor ID ............................................................................ 9-36
Extended Configuration Space Access Registers ................................................................ 9-36
Advanced Error Reporting (AER) Enhanced Capability ....................................................... 9-37
Device Serial Number Enhanced Capability......................................................................... 9-43
PCI Express Virtual Channel Capability ............................................................................... 9-43
Power Budgeting Enhanced Capability ................................................................................ 9-49
Switch Control and Status Registers .................................................................................... 9-50
Internal Switch Error Control and Status Registers .............................................................. 9-61
JTAG Boundary Scan
Introduction ................................................................................................................................... 10-1
Test Access Point ......................................................................................................................... 10-1
Signal Definitions .......................................................................................................................... 10-1
Boundary Scan Chain................................................................................................................... 10-3
Test Data Register (DR) ............................................................................................................... 10-4
Boundary Scan Registers..................................................................................................... 10-4
Instruction Register (IR)................................................................................................................ 10-6
EXTEST................................................................................................................................ 10-6
SAMPLE/PRELOAD............................................................................................................. 10-7
BYPASS ............................................................................................................................... 10-7
CLAMP ................................................................................................................................. 10-7
IDCODE................................................................................................................................ 10-7
VALIDATE ............................................................................................................................ 10-8
RESERVED.......................................................................................................................... 10-8
Usage Considerations .......................................................................................................... 10-8