Rainbow Electronics AT75C310 - 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