User Manual

Apollo3 Blue Datasheet
DS-A3-0p9p1 Page 605 of 909 2019 Ambiq Micro, Inc.
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13.21.2.22TMR3 Register
Counter/Timer Register
OFFSET: 0x00000060
INSTANCE 0 ADDRESS: 0x40008060
Counter/Timer Register
21:16 TMRB2LMT 0x0 RW
Counter/Timer B2 Pattern Limit Count.
15 RSVD 0x0 RO
RESERVED
14 TMRA2EN23 0x0 RW
Counter/Timer A2 Upper compare enable.
DIS = 0x1 - Disable enhanced functions.
EN = 0x0 - Enable enhanced functions.
13 TMRA2POL23 0x0 RW
Counter/Timer A2 Upper output polarity
NORM = 0x0 - Upper output normal polarity
INV = 0x1 - Upper output inverted polarity.
12 TMRA2TINV 0x0 RW
Counter/Timer A2 Invert on trigger.
DIS = 0x0 - Disable invert on trigger
EN = 0x1 - Enable invert on trigger
11
TMRA2NO-
SYNC
0x0 RW
Source clock synchronization control.
DIS = 0x0 - Synchronization on source clock
NOSYNC = 0x1 - No synchronization on source clock
10:7 TMRA2TRIG 0x0 RW
Counter/Timer A2 Trigger Select.
DIS = 0x0 - Trigger source is disabled.
B2OUT = 0x1 - Trigger source is CTIMERB2 OUT.
B3OUT = 0x2 - Trigger source is CTIMERB3 OUT.
A3OUT = 0x3 - Trigger source is CTIMERA3 OUT.
A0OUT = 0x4 - Trigger source is CTIMERA0 OUT.
B0OUT = 0x5 - Trigger source is CTIMERB0 OUT.
A4OUT = 0x6 - Trigger source is CTIMERA4 OUT.
B4OUT = 0x7 - Trigger source is CTIMERB4 OUT.
B3OUT2 = 0x8 - Trigger source is CTIMERB3 OUT2.
A3OUT2 = 0x9 - Trigger source is CTIMERA3 OUT2.
A5OUT2 = 0xA - Trigger source is CTIMERA5 OUT2.
B5OUT2 = 0xB - Trigger source is CTIMERB5 OUT2.
A6OUT2DUAL = 0xC - Trigger source is CTIMERA6 OUT2, dual edge.
A7OUT2DUAL = 0xD - Trigger source is CTIMERA7 OUT2, dual edge.
B4OUT2DUAL = 0xE - Trigger source is CTIMERB4 OUT2, dual edge.
A4OUT2DUAL = 0xF - Trigger source is CTIMERA4 OUT2, dual edge.
6:0 TMRA2LMT 0x0 RW
Counter/Timer A2 Pattern Limit Count.
Table 862: AUX2 Register Bits
Bit Name Reset RW Description