RM0453 Rev 5 1327/1450
RM0453 Debug support (DBG)
1435
38.4.7 DP resend register (DP_RESENDR)
Address offset: 0x08
Reset value: 0x0000 0000
38.4.8 DP access port select register (DP_SELECTR)
Address offset: 0x08
Reset value: 0xXXXX XXXX
Bits 3:0 PROTSVN[3:0]: Serial-wire debug protocol version
0x1: Version 2
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
RESEND[31:16]
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1514131211109876543210
RESEND[15:0]
rrrrrrrrrrrrrrrr
Bits 31:0 RESEND[31:0]: Returns the value that was returned by the last AP read or DP_RDBUFFR
read.
Used in the event of a corrupted read transfer.
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
APSEL[3:0] Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res. Res.
wwww
1514131211109876543210
Res. Res. Res. Res. Res. Res. Res. Res. APBANKSEL[3:0] DPBANKSEL[3:0]
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Bits 31:28 APSEL[3:0]: access port selection
Selects the access port for the next transaction.
0x0: AP0 - CPU1 (Cortex-M4) debug access port (AHB-AP)
0x1: AP1 - CPU2 (Cortex-M0+) debug access port (AHB-AP)
0x2 to 0xF: reserved
Bits 27:8 Reserved, must be kept at reset value.
Bits 7:4 APBANKSEL[3:0]: AP register bank selection
Selects the 4-word register bank on the active AP for the next transaction.
Bits 3:0 DPBANKSEL[3:0]: DP register bank selection
Selects the register at address 0x4 of the debug port.
0x0: DP_CTRLSTATR
0x1: DP_DLCR
0x2: DP_TARGETIDR
0x3: DP_DLPIDR
0x4 to 0xF: reserved
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