Dp Read Buffer Register (Dp_Buffr); Dp Target Identification Register (Dp_Targetselr) - ST STM32WL5 Series Reference Manual

Debug support (DBG)
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
38.4.9

DP read buffer register (DP_BUFFR)

Address offset: 0x0C
Reset value: 0x0000 0000
31 30 29
r r r
15 14 13
r r r
Bits 31:0 RDBUFF[31:0]: Contains the value returned by the last AP read access.
The value returned by an AP read access can either be obtained using a second read access
to the same address, which initiates a new transaction on the corresponding bus, or else it
can be read from this register, in which case no new AP transaction occurs.
38.4.10

DP target identification register (DP_TARGETSELR)

Address offset: 0x0C
Reset value: 0xXXXX XXXX
31 30 29 28
TINSTANCE[3:0]
w w w w
15 14 13 12
TPARTNO[3:0]
w w w w
1340/1461
28 27 26 25
r r r r
12 11 10 9
r r r r
27 26 25
w w w
11 10 9
w w w
24 23 22
RDBUFF[31:16]
r r r
8 7 6
RDBUFF[15:0]
r r r
24 23 22 21
TPARTNO[15:4]
w w w
8 7 6
TDESIGNER[10:0]
w w w
RM0453 Rev 1
21 20 19 18
r r r r
5 4 3 2
r r r r
20 19 18
w w w w
5 4 3 2
w w w w
RM0453
17 16
r r
1 0
r r
17 16
w w
1 0
Res.
w