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RM0461
Bits 3:0 PROTSVN[3:0]: Serial-wire debug protocol version
0x1: Version 2
36.4.7
DP resend register (DP_RESENDR)
Address offset: 0x08
Reset value: 0x0000 0000
31
30
29
r
r
r
15
14
13
r
r
r
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.
36.4.8
DP access port select register (DP_SELECTR)
Address offset: 0x08
Reset value: 0xXXXX XXXX
31
30
29
APSEL[3:0]
w
w
w
15
14
13
Res.
Res.
Res.
Res.
Bits 31:28 APSEL[3:0]: access port selection
Selects the access port for the next transaction.
0x0: AP0 - CPU (Cortex-M4) debug access port (AHB-AP)
0x1 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
28
27
26
25
r
r
r
r
12
11
10
9
r
r
r
r
28
27
26
25
Res.
Res.
Res.
w
12
11
10
9
Res.
Res.
Res.
24
23
22
RESEND[31:16]
r
r
r
8
7
6
RESEND[15:0]
r
r
r
24
23
22
Res.
Res.
Res.
8
7
6
Res.
APBANKSEL[3:0]
w
w
RM0461 Rev 5
Debug support (DBG)
21
20
19
18
r
r
r
r
5
4
3
2
r
r
r
r
21
20
19
18
Res.
Res.
Res.
Res.
5
4
3
2
DPBANKSEL[3:0]
w
w
w
w
17
16
r
r
1
0
r
r
17
16
Res.
Res.
1
0
w
w
1227/1306
1291
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