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10−5
Table 10−4. Page 0 (Port Status) Register Field Descriptions (Continued)
FIELD SIZE TYPE DESCRIPTION
Int_enable 1 RW Port event interrupt enable. When the Int_enable bit is set to 1, a port event on the selected port sets the port
event interrupt (Port_event) bit and notifies the link. This bit is cleared to 0 by a system (hardware) reset and
is unaffected by bus reset.
Fault 1 RW Fault. This bit indicates that a resume-fault or suspend-fault has occurred on the selected port, and that the
port is in the suspended state. A resume-fault occurs when a resuming port fails to detect incoming cable
bias from its attached peer. A suspend-fault occurs when a suspending port continues to detect incoming
cable bias from its attached peer. Writing 1 to this bit clears the fault bit to 0. This bit is cleared to 0 by system
(hardware) reset and is unaffected by bus reset.
10.3 Vendor Identification Register
The vendor identification page identifies the vendor/manufacturer and compliance level. The page is selected by
writing 1 to the Page_Select field in base register 7. Table 10−5 shows the configuration of the vendor identification
page, and Table 10−6 shows the corresponding field descriptions.
Table 10−5. Page 1 (Vendor ID) Register Configuration
BIT POSITION
ADDRESS 0 1 2 3 4 5 6 7
1000 Compliance
1001 Reserved
1010 Vendor_ID[0]
1011 Vendor_ID[1]
1100 Vendor_ID[2]
1101 Product_ID[0]
1110 Product_ID[1]
1111 Product_ID[2]
Table 10−6. Page 1 (Vendor ID) Register Field Descriptions
FIELD SIZE TYPE DESCRIPTION
Compliance 8 R Compliance level. For the PCI7x21/PCI7x11 controller this field is 01h, indicating compliance with IEEE Std
1394a-2000.
Vendor_ID 24 R Manufacturer’s organizationally unique identifier (OUI). For the PCI7x21/PCI7x11 controller this field is
08 0028h (Texas Instruments) (the MSB is at register address 1010b).
Product_ID 24 R Product identifier. For the PCI7x21/PCI7x11 controller this field is 42 4499h (the MSB is at register address
1101b).