SPRUJC6A December 2024 – July 2025 AM2752-Q1 , AM2754-Q1
Global SS Port to Bus Instance Mapping Register - Low This is an alternate register for the GPRTBIMAP register. Register fields are read-write with respect to number of port instantiated. writeAsRead constraint is added to limit side effects for unused fields. For a configuration with number of USB 3.0 ports same as number of SS Bus Instances, do not remap during debug session. If you remap for some reason, then the debug host must be connected to a port which has a dedicated SS Bus Instance. For example, if DWC_USB3_NUM_U3_ROOT_PORTS =3 and DWC_USB3_NUM_SS_USB_INSTANCES=3, and software maps the first SS port to the first SS BI and the second/third port to the second BI, then the debug host can be connected to the first port only. Note: For reset values, refer to the corresponding values in the GPRTBIMAP register.
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| Instance Name | Physical Address |
|---|---|
| USB0 | 3100 C138h |
| 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 |
| BINUM8 | BINUM7 | ||||||
| R | R | ||||||
| 0h | 0h | ||||||
| 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
| BINUM6 | BINUM5 | ||||||
| R | R | ||||||
| 0h | 0h | ||||||
| 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 |
| BINUM4 | BINUM3 | ||||||
| R | R | ||||||
| 0h | 0h | ||||||
| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| BINUM2 | BINUM1 | ||||||
| R | R/W | ||||||
| 0h | 0h | ||||||
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 31:28 | BINUM8 | R | 0h | BINUM8: SS USB Instance Number for Port 8. Application-programmable ID field. Reset Source: rst_mod_g_rst_n |
| 27:24 | BINUM7 | R | 0h | BINUM7: SS USB Instance Number for Port 7. Application-programmable ID field. Reset Source: rst_mod_g_rst_n |
| 23:20 | BINUM6 | R | 0h | BINUM6: SS USB Instance Number for Port 6. Application-programmable ID field. Reset Source: rst_mod_g_rst_n |
| 19:16 | BINUM5 | R | 0h | BINUM5: SS USB Instance Number for Port 5. Application-programmable ID field. Reset Source: rst_mod_g_rst_n |
| 15:12 | BINUM4 | R | 0h | BINUM4: SS USB Instance Number for Port 4. Application-programmable ID field. Reset Source: rst_mod_g_rst_n |
| 11:8 | BINUM3 | R | 0h | BINUM3: SS USB Instance Number for Port 3. Application-programmable ID field. Reset Source: rst_mod_g_rst_n |
| 7:4 | BINUM2 | R | 0h | BINUM2: SS USB Instance Number for Port 2. Application-programmable ID field. Reset Source: rst_mod_g_rst_n |
| 3:0 | BINUM1 | R/W | 0h | BINUM1: SS USB Instance Number for Port 1. Application-programmable ID field. Reset Source: rst_mod_g_rst_n |