SPRUJC6A December 2024 – July 2025 AM2752-Q1 , AM2754-Q1
The register controls the when SEND_QUEUE_STATUS commands are sent.
Return to Summary Table
| Instance Name | Physical Address |
|---|---|
| MMCSD0 | 0FA0 0240h |
| 32 | 31 | 30 | 29 | 28 | 27 | 26 | 25 |
| RESERVED | |||||||
| NONE | |||||||
| 0h | |||||||
| 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 |
| RESERVED | CMD_BLK_CNTR | ||||||
| NONE | R/W | ||||||
| 0h | 1h | ||||||
| 16 | 15 | 14 | 13 | 12 | 11 | 10 | 9 |
| CMD_IDLE_TIMER | |||||||
| R/W | |||||||
| 1000h | |||||||
| 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 |
| CMD_IDLE_TIMER | |||||||
| R/W | |||||||
| 1000h | |||||||
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 31:20 | RESERVED | NONE | 0h | Reserved |
| 19:16 | CMD_BLK_CNTR | R/W | 1h | This field indicates to CQE when to send SEND_QUEUE_STATUS [CMD13] command to inquire the status of the devices task queue.A value of n means CQE shall send status command on the CMD line, during the transfer of data block BLOCK_CNT-n, on the data lines, where BLOCK_CNT is the number of blocks in the current transaction.A value of 0 means that SEND_QUEUE_STATUS [CMD13] command shall not be sent during the transac-tion. Instead it will be sent only when the data lines are idle.A value of 1 means that STATUS command is to be sent during the last block of the transaction. Reset Source: vbus_amod_g_rst_n |
| 15:0 | CMD_IDLE_TIMER | R/W | 1000h | This field indicates to CQE the polling period to use when using periodic SEND_QUEUE_STATUS [CMD13] polling.Periodic polling is used when tasks are pending in the device, but no data transfer is in progress. When a SEND_QUEUE_STATUS response indicating that no task is ready for execution, CQE counts the configured time until it issues the next SEND_QUEUE_STATUS.Timer units are clock periods of theclock whose fre-quency is specified in the Internal Timer Clock Fre-quency field CQCAP register.The minimum value is 0001h [1 clock period] and the maximum value is FFFFh [65535 clock periods]. Default interval is: 4096 clock periods. For example, a CQCAP field value of 0 indicates a 19.2 MHz clock frequency [period = 52.08 ns]. If the setting in CQSST is 1000h, the calcu.lated polling period is 4096*52.08 ns= 213.33 us. Reset Source: vbus_amod_g_rst_n |