32.7.12 Length
Note: This register is write-synchronized: SYNCBUSY.LENGTH must be checked to ensure the
LENGTH register synchronization is complete.
| Name: | LENGTH |
| Offset: | 0x22 |
| Reset: | 0x00 |
| Property: | PAC Write-Protection, Write-Synchronized |
| Bit | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | |
| LENEN[1:0] | |||||||||
| Access | R/W | R/W | |||||||
| Reset | 0 | 0 | |||||||
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| LEN[7:0] | |||||||||
| Access | R/W | R/W | R/W | R/W | R/W | R/W | R/W | R/W | |
| Reset | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
Bits 9:8 – LENEN[1:0] Data Length Enable
In 32-bit Extension mode, this bit field configures the length counter either for transmit or receive transactions.
| Value | Description |
|---|---|
| 0x0 | Length counter disabled |
| 0x1 | Length counter enabled for transmit |
| 0x2 | Length counter enabled for receive |
| 0x3 | Reserved |
Bits 7:0 – LEN[7:0] Data Length
In 32-bit Extension mode, this bit field configures the data length after which the flags INTFLAG.RXC or INTFLAG.DRE are raised.
| Value | Description |
|---|---|
| 0x00 | Reserved if LENEN=0x1 or LENEN=0x2 |
| 0x01-0xFF | Data Length |