Register 20: GPTM Timer A Value (GPTMTAV), offset 0x050
When read, this register shows the current, free-running value of Timer A in all modes. Software
can use this value to determine the time elapsed between an interrupt and the ISR entry when using
the snapshot feature with the periodic operating mode. When written, the value written into this
register is loaded into the GPTMTAR register on the next clock cycle.
Note: When an alternate clock source is enabled, a read of this register returns the current count
-1.
When a 16/32-bit GPTM is configured to one of the 32-bit modes, GPTMTAV appears as a 32-bit
register (the upper 16-bits correspond to the contents of the GPTM Timer B Value (GPTMTBV)
register). In a 16-bit mode, bits 15:0 contain the value of the counter and bits 23:16 contain the
current, free-running value of the prescaler, which is the upper 8 bits of the count in Input Edge
Count, Input Edge Time, PWM and one-shot or periodic up count modes. In one-shot or periodic
down count modes, the prescaler stored in 23:16 is a true prescaler, meaning bits 23:16 count down
before decrementing the value in bits 15:0. The prescaler in bits 31:24 always reads as 0.
GPTM Timer A Value (GPTMTAV)
16/32-bit Timer 0 base: 0x4003.0000
16/32-bit Timer 1 base: 0x4003.1000
16/32-bit Timer 2 base: 0x4003.2000
16/32-bit Timer 3 base: 0x4003.3000
16/32-bit Timer 4 base: 0x4003.4000
16/32-bit Timer 5 base: 0x4003.5000
16/32-bit Timer 6 base: 0x400E.0000
16/32-bit Timer 7 base: 0x400E.1000
Offset 0x050
Type RW, reset 0xFFFF.FFFF
16171819202122232425262728293031
TAV
RWRWRWRWRWRWRWRWRWRWRWRWRWRWRWRWType
1111111111111111Reset
0123456789101112131415
TAV
RWRWRWRWRWRWRWRWRWRWRWRWRWRWRWRWType
1111111111111111Reset
DescriptionResetTypeNameBit/Field
GPTM Timer A Value
A read returns the current, free-running value of Timer A in all modes.
When written, the value written into this register is loaded into the
GPTMTAR register on the next clock cycle.
Note: In 16-bit mode, only the lower 16-bits of the GPTMTAV
register can be written with a new value. Writes to the
prescaler bits have no effect.
0xFFFF.FFFFRWTAV31:0
June 18, 20141014
Texas Instruments-Production Data
General-Purpose Timers
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