34.9.12 Length
| Symbol | Description | Symbol | Description | Symbol | Description |
|---|---|---|---|---|---|
| R | Readable bit | HC | Cleared by Hardware | (Grey cell) | Unimplemented |
| W | Writable bit | HS | Set by Hardware | X | Bit is unknown at Reset |
| K | Write to clear | S | Software settable bit | — | — |
| Name: | LENGTH |
| Offset: | 0x22 |
| Reset: | 0x0000 |
| Property: | RW |
| Bit | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | |
| LENEN[1:0] | |||||||||
| Access | RW | RW | |||||||
| Reset | 0 | 0 | |||||||
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| LEN[7:0] | |||||||||
| Access | RW | RW | RW | RW | RW | RW | RW | RW | |
| 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 | Name | Description |
|---|---|---|
| 0x0 | DISABLE | Length counter is disabled |
| 0x1 | TX | Length counter is enabled for transmit |
| 0x2 | RX | Length counter is enabled for receive |
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 |