at75c220 ATMEL Corporation, at75c220 Datasheet - Page 15

• Manufacturer Part Number: at75c220
• Description: Smart Internet Appliance Processor Siap
• Manufacturer: ATMEL Corporation

SIAP-E Reset Status Register
Register Name: SIAP_RST
Access: Read/write
Reset Value: 0x00000001
•
SIAP-E Clock Status Register
Register Name: SIAP_CLKF
Access: Read-only
Reset Value: 0x00000001
•
RST[2:0]: Reset
CLK: Clock Status
These bits indicate the cause of the last reset.
This bit indicates which clock is in use by the system. When set, the low power clock is in use. When cleared, the PLL
is locked and the high power clock is in use. This can be used by software to determine when the power mode has
changed after the LP bit has been written.
0
0
1
31
23
15
31
23
15
7
7
–
–
–
–
–
–
–
–
RST
0
1
0
30
22
14
30
22
14
6
6
–
–
–
–
–
–
–
–
1
0
0
29
21
13
29
21
13
5
5
–
–
–
–
–
–
–
–
Watchdog Timer
Reset Event
Hardware
Software
28
20
12
28
20
12
4
4
–
–
–
–
–
–
–
–
27
19
11
27
19
11
3
3
–
–
–
–
–
–
–
–
RST
26
18
10
26
18
10
2
2
–
–
–
–
–
–
–
RST
25
17
25
17
9
1
9
1
–
–
–
–
–
–
–
RST
CLK
24
16
24
16
8
0
8
0
–
–
–
–
–
–
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