6.1.13 TAP
Low level TAP commands (JTAG only).
The TAP command shifts N bits of DATA into the specified shift register (IR or DR). The output of the shift is captured and returned in the DATA response. Bits are shifted LSB first both in and out.
| Field | Size | Description |
|---|---|---|
| AVR32_CMD_TAP | 1 byte | Command ID |
| Version (0x00) | 1 byte | Command version |
| Register/Signal | 1 byte |
AVR32_TAP_IR AVR32_TAP_DR |
| Bits | 1 byte | Number of bits to shift |
| Data | N bytes | N = bits/8; data to scan in |
Responses: