Datasheet
1394 OHCI Memory-Mapped Register Space
136
March 5 2007 − June 2011SCPS154C
8.13 Posted Write Address Low Register
The posted write address low register communicates error information if a write request is posted and an error
occurs while the posted data packet is being written. See Table 8−9 for a complete description of the register
contents.
OHCI register offset: 38h
Register type: Read/Update
Default value: XXXX XXXXh
BIT NUMBER 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
RESET STATE X X X X X X X X X X X X X X X X
BIT NUMBER 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
RESET STATE X X X X X X X X X X X X X X X X
Table 8−9. Posted Write Address Low Register Description
BIT FIELD NAME TYPE DESCRIPTION
31−0 offsetLo RU The lower 32 bits of the 1394 destination offset of the write request that failed.
8.14 Posted Write Address High Register
The posted write address high register communicates error information if a write request is posted and an error
occurs while writing the posted data packet. See Table 8−10 for a complete description of the register
contents.
OHCI register offset: 3Ch
Register type: Read/Update
Default value: XXXX XXXXh
BIT NUMBER 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
RESET STATE X X X X X X X X X X X X X X X X
BIT NUMBER 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
RESET STATE X X X X X X X X X X X X X X X X
Table 8−10. Posted Write Address High Register Description
BIT FIELD NAME TYPE DESCRIPTION
31−16 sourceID RU This field is the 10-bit bus number (bits 31−22) and 6-bit node number (bits 21−16) of the node that
issued the write request that failed.
15−0 offsetHi RU The upper 16 bits of the 1394 destination offset of the write request that failed.
8.15 Vendor ID Register
The vendor ID register holds the company ID of an organization that specifies any vendor-unique registers.
The controller implements Texas Instruments unique behavior with regards to OHCI. Thus, this register is
read-only and returns 0108 0028h when read.
OHCI register offset: 40h
Register type: Read-only
Default value: 0108 0028h
BIT NUMBER 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
RESET STATE 0 0 0 0 0 0 0 1 0 0 0 0 1 0 0 0
BIT NUMBER 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
RESET STATE 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 0
Not Recommended for New Designs