SLLSE76Q March 2011 – March 2024 TUSB7320 , TUSB7340
PRODUCTION DATA
The TUSB73X0 supports an array of 65 Doorbell Registers, one for the host controller plus one for each Device Slot supported. The address of the first Doorbell Register is the address programmed into the Base Address Register 0 plus the value programmed into the Doorbell Offset.
Doorbell Base register offset: 00h + (04h × Device Slot), where Device Slot = 0 through 64
Register type: Read-Only, Read/Write
Default value: 0000 0000h
Bit No. | 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 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Bit No. | 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 | 0 | 0 | 0 | 0 | 0 | 0 |
BIT | FIELD NAME | ACCESS | DESCRIPTION |
---|---|---|---|
31:16 | DB_STREAM_ID | rw | Doorbell Stream ID. This field returns zeros when read. |
15:8 | RSVD | r | Reserved. Returns zeros when read. |
7:0 | DB_TARGET | rw | Doorbell Target. This field returns zeros when read. |