Maxim Integrated MAXQ Family - Manual (Page 44)

3-19
Table 3-3. Watchdog Timeout Period Selection
WATCHDOG TIMEOUT
(IN NUMBER OF OSCILLATOR CLOCKS) SYSTEM CLOCK MODE
SYSTEM CLOCK
SELECT BITS PMME,
CD1, CD0
WD1:0 = 00b WD1:0 = 01b WD1:0 = 10b WD1:0 = 11b
Divide by 1 (default) 000 2 12 2 15 2 18 2 21
Divide by 2 001 2 13 2 16 2 19 2 22
Divide by 4 010 2 14 2 17 2 20 2 23
Divide by 8 011 2 15 2 18 2 21 2 24
Power Management Mode
(Divide by 256)
1xx 2 20 2 23 2 26 2 29
Note: Registers in italics are read-only. Registers in bold are 16-bit (except A[n], Acc, A[AP] for MAXQ10). Registers with indexes 8h and higher can only be
accessed as destinations by using the prefix register. Similarly, registers with indexes 10h and higher can only be accessed as sources through the prefix regis-
ter. All undefined or unused indexes (indicated by an em-dash ‘—‘) are either used for op code implementation or reserved for future expansion, and should not
be accessed explicitly. Accessing these locations as registers can have deterministic effects, but the effects will probably not be the intended ones.
Table 3-4. System Register Map
MODULE SPECIFIER
6h 7h 8h 9h Ah Bh Ch Dh Eh Fh
0h — — AP A[0] Acc PFX[0] IP — — —
1h — — APC A[1] A[AP] PFX[1] — SP — —
2h — — — A[2] — PFX[2] — IV — —
3h — — — A[3] — PFX[3] — — OFFS DP[0]
4h — — PSF A[4] — PFX[4] — — DPC —
5h — — IC A[5] — PFX[5] — — GR —
6h — — IMR A[6] — PFX[6] — LC[0] GRL —
7h — — — A[7] — PFX[7] — LC[1] BP DP[1]
8h — — SC A[8] — — — — GRS —
9h — — — A[9] — — — — GRH —
Ah — — — A[10] — — — — GRXL —
Bh — — IIR A[11] — — — — FP —
Ch — — — A[12] — — — — — —
Dh — — — A[13] — — — — — —
Eh — — CKCN A[14] — — — — — —
Fh — — WDCN A[15] — — — — — —
10h — — — — — — — — — —
11h — — — — — — — — — —
12h — — — — — — — — — —
13h — — — — — — — — — —
14h — — — — — — — — — —
15h — — — — — — — — — —
16h — — — — — — — — — —
17h — — — — — — — — — —
18h — — — — — — — — — —
19h — — — — — — — — — —
1Ah — — — — — — — — — —
1Bh — — — — — — — — — —
1Ch — — — — — — — — — —
1Dh — — — — — — — — — —
1Eh — — — — — — — — — —
1Fh — — — — — — — — — —
REGISTER
INDEX
WITHIN
MODULE
MAXQ Family User’s Guide
Maxim Integrated