82801BA Datasheet, PDF (11/498 Pages) Intel Corporation – Intel 82801BA I/O Controller Hub 2 (ICH2) and Intel 82801BAM I/O Controller Hub 2 Mobile

5.16.5 Packet Formats............................................................................5-123
5.16.5.1 Token Packets..............................................................5-123
5.16.5.2 Start of Frame Packets.................................................5-123
5.16.5.3 Data Packets ................................................................5-124
5.16.5.4 Handshake Packets......................................................5-124
5.16.5.5 Handshake Responses ................................................5-125
5.16.6 USB Interrupts .............................................................................5-125
5.16.6.1 Transaction Based Interrupts .......................................5-125
5.16.6.2 Non-Transaction Based Interrupts................................5-127
5.16.7 USB Power Management ............................................................5-127
5.16.8 USB Legacy Keyboard Operation................................................5-128
5.17 SMBus Controller Functional Description (D31:F3) ..................................5-130
5.17.1 Host Controller .............................................................................5-130
5.17.1.1 Command Protocols .....................................................5-131
5.17.1.2 I²C Behavior .................................................................5-136
5.17.1.3 Heartbeat for Use With the External LAN Controller ....5-136
5.17.2 Bus Arbitration .............................................................................5-137
5.17.3 Interrupts / SMI# ..........................................................................5-137
5.17.4 SMBALERT#................................................................................5-138
5.17.5 SMBus Slave Interface ................................................................5-138
5.18 AC’97 Controller Functional Description
(Audio D31:F5, Modem D31:F6)5-142
5.18.1 AC-link Overview .........................................................................5-143
5.18.2 AC-Link Low Power Mode ...........................................................5-151
5.18.3 AC‘97 Cold Reset ........................................................................5-152
5.18.4 AC‘97 Warm Reset ......................................................................5-152
5.18.5 System Reset...............................................................................5-153
5.19 Firmware Hub Interface ............................................................................5-154
5.19.1 Field Definitions ...........................................................................5-154
5.19.2 Protocol........................................................................................5-155
6
Register and Memory Mapping..................................................................................6-1
6.1 PCI Devices and Functions...........................................................................6-1
6.2 PCI Configuration Map..................................................................................6-2
6.3 I/O Map .........................................................................................................6-2
6.3.1 Fixed I/O Address Ranges...............................................................6-3
6.3.2 Variable I/O Decode Ranges ...........................................................6-5
6.4 Memory Map .................................................................................................6-6
6.4.1 Boot-Block Update Scheme.............................................................6-7
7
LAN Controller Registers (B1:D8:F0).........................................................................7-1
7.1 PCI Configuration Registers (B1:D8:F0).......................................................7-1
7.1.1 VID—Vendor ID Register (LAN Controller—B1:D8:F0) ...................7-2
7.1.2 DID—Device ID Register (LAN Controller—B1:D8:F0) ...................7-2
7.1.3 PCICMD—PCI Command Register
(LAN Controller—B1:D8:F0) ............................................................7-2
7.1.4 PCISTS—PCI Status Register (LAN Controller—B1:D8:F0) ...........7-3
7.1.5 REVID—Revision ID Register (LAN Controller—B1:D8:F0) ............7-3
7.1.6 SCC—Sub-Class Code Register
(LAN Controller—B1:D8:F0) ............................................................7-4
7.1.7 BCC—Base-Class Code Register
(LAN Controller—B1:D8:F0) ............................................................7-4
7.1.8 CLS—Cache Line Size Register (LAN Controller—B1:D8:F0) ........7-4
82801BA ICH2 and 82801BAM ICH2-M Datasheet
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