AT91SAM9G20_1 Datasheet, PDF (364/832 Pages) ATMEL Corporation – AT91 ARM Thumb Microcontrollers

28.5.11 Debug Unit Chip ID Extension Register
Name:
DBGU_EXID
Access Type: Read-only
31
30
29
28
27
26
25
EXID
23
22
21
20
19
18
17
EXID
15
14
13
12
11
10
9
EXID
7
6
5
4
3
2
1
EXID
• EXID: Chip ID Extension
Reads 0 if the bit EXT in DBGU_CIDR is 0.
28.5.12 Debug Unit Force NTRST Register
Name:
DBGU_FNR
Access Type:Read-write
31
30
29
28
27
26
25
–
–
–
–
–
–
–
23
22
21
20
19
18
17
–
–
–
–
–
–
–
15
14
13
12
11
10
9
–
–
–
–
–
–
–
7
6
5
4
3
2
1
–
–
–
–
–
–
–
• FNTRST: Force NTRST
0 = NTRST of the ARM processor’s TAP controller is driven by the power_on_reset signal.
1 = NTRST of the ARM processor’s TAP controller is held low.
24
16
8
0
24
–
16
–
8
–
0
FNTRST
364 AT91SAM9G20 Preliminary
6384D–ATARM–04-May-09