CMSIS-DAP  Version 1.00 - Beta
CMSIS-DAP Interface Firmware for CoreSight Debug Access Port
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DAP_JTAG_Transfer_Block

Read/Write Single Register Block via JTAG. More...

Read/Write Single Register Block via JTAG.

Block access is a multiple 32-bit Read or Write of the same register. Register address depends on the DPBANKSEL/APBANKSEL and A3..2. The command can execute several read/write operations on a single DP/AP register.

Transfer is aborted on error:

Command to request the JTAG transfer.

BYTE | BYTE ******| BYTE **********| BYTE *************| WORD *********|
> 0x26 | JTAG Index | Transfer Count | Transfer Request | Transfer Data |
******|************|****************|*******************|+++++++++++++++|

Respons to the JTAG dat transfer request.

BYTE | BYTE **********| BYTE *************| WORD *********|
< 0x26 | Transfer Count | Transfer Response | Transfer Data |
******|****************|*******************|+++++++++++++++|

Where