ZHCSB17D february 2013 – july 2023 TUSB8040A1
PRODUCTION DATA
| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| RSVD | used[3:0] | ||||||
| RO-0 | RW-X | ||||||
| LEGEND: R/W = Read/Write; R = Read only; -n = value after reset |
| BIT | FIELD NAME | ACCESS | DESCRIPTION | |
|---|---|---|---|---|
| 7:4 | RSVD | RO | Reserved. Read only, returns 0 when read. | |
| 3:0 | used[3:0] | RW | Used. The bits in this field indicate whether downstream ports 3 through 0 are enabled or disabled for use. A value of 0 indicates the port is not used. A value of 1 indicates the port is used. | |
| The default value for these bits are loaded at the de-assertion of reset with the value of LEDG[3:0]z_USED[3:0] as follows: | ||||
| used[3:0] defaults to wxyzb, | ||||
| where w is LEDG3z_USED3, x is LEDG2z_USED2, y is LEDG1z_USED1 and z is LEDG0z_USED0. | ||||