Id register, Reset register – Rainbow Electronics AT75C310 User Manual
Page 14
AT75C310
14
ID Register
Register Name:
SIAP_ID
•
PKG: Package
This bit reflects the state of the data bus width signal DBW and indicates the AT75C310 package size, 1 for the 240-
lead PQFP option and 0 for the 160-lead PQFP option. The signal DBW is bonded to either power or ground depending
on the package used during manufacturing.
•
VERS[2:0]: Version
This flag indicates the version number of the AT75C310. This field is reset to 0 x 1.
Reset Register
Register Name:
SIAP_RST
•
RST[2:0]: Reset
These bits indicate the cause of the last reset.
31
30
29
28
27
26
25
24
–
–
–
–
–
–
–
–
23
22
21
20
19
18
17
16
–
–
–
–
–
–
–
–
15
14
13
12
11
10
9
8
PKG
–
–
–
–
–
–
–
7
6
5
4
3
2
1
0
–
–
–
–
–
VERS
VERS
VERS
31
30
29
28
27
26
25
24
–
–
–
–
–
–
–
–
23
22
21
20
19
18
17
16
–
–
–
–
–
–
–
–
15
14
13
12
11
10
9
8
–
–
–
–
–
–
–
–
7
6
5
4
3
2
1
0
–
–
–
–
–
RST
RST
RST
RST
Reset Event
0
0
1
Hardware
0
1
0
Watchdog Timer
1
0
0
Software