12 Intel
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41210 Serial to Parallel PCI Bridge Developer’s Manual
Introduction
• Up to two downstream delayed (memory read, I/O read/write and configuration read/write)
transactions
• Tunable inbound read prefetch algorithm for PCI MRM/MRL commands
• Device hiding support for secondary PCI devices
• Secondary bus private memory support via opaque memory region
• Local initialization via SMBus
• Secondary side initialization via Type 0 configuration cycles
• Full peer-to-peer read/write capability between the two secondary PCI segments
1.3 Power Management
• Support for PCI PM 1.1-compatible D0, D3hot and D3cold device power states
• Support for PME# event propagation on behalf of PCI devices
1.4 SMBus Interface
• Compatible with System Management Bus Specification, Revision 2.0
• Slave-mode operation only
• Full read/write access to all configuration registers
1.5 JTAG
• IEEE Standard Test Access Port and Boundary Scan Architecture 1149.1a