Microsemi SmartFusion2 - Table 629 TIM64_CTRL; Timer 64 Background Load Value Lower Register

System Timer
UG0331 User Guide Revision 15.0 627
19.4.11 Timer 64 Background Load Value Lower Register
19.4.12 Timer 64 Control Register
Table 628 • TIM64_BGLOADVAL_L
Bit
Number Name R/W
Reset
Value Description
31:0 TIM64_BGLOADVAL_
L
R/W 0 Background load value for the lower 32 bits of 64-bit Timer. When
this register is written, both the upper and lower words are written
into an internal 64-bit TIM64LOADVAL register without updating the
counter. The TIM64LOADVAL register is an internal register to the
Timer used in 64-bit mode for concatenating the two 32-bit
registers, TIM64_LOADVAL_U and TIM64_LOADVAL_L. The new
64-bit load value is loaded into the counter when the counter
reaches zero. Writing this register when the Timer is set to 32-bit
mode has no effect. Reading this register when the Timer is set to
32-bit mode returns the reset value.
Table 629 • TIM64_CTRL
Bit
Number Name R/W
Reset
Value Description
31:3 Reserved R/W 0 Software should not rely on the value of a reserved bit. To provide
compatibility with future products, the value of a reserved bit should be
preserved across a read-modify-write operation.
2 TIM64INTEN R/W 0 Timer 64 interrupt enable. When the counter reaches zero, an interrupt is
signaled to the Cortex-M3 processor NVIC.
0: Timer 64 interrupt disabled
1: Timer 64 interrupt enabled
1 TIM64MODE R/W 0 Timer 64 mode.
0: Timer 64 in Periodic mode
If TIM64ENABLE = 1 when the counter reaches zero, the counter is
reloaded from the value in the TIM64_LOADVAL_U and
TIM64_LOADVAL_L registers and starts the counting down.
1: Timer 64 in One-shot mode
If TIM64ENABLE = 1 when the counter reaches zero, the counter stops
counting. To restart the counter, load TIM64_LOADVAL_U and
TIM64_LOADVAL_L with a non-zero value or set the Timer to Periodic
mode by clearing TIM64MODE to 0.
0 TIM64ENABLE R/W 0 Timer 64 enable.
0: Timer 64 disabled
1: Timer 64 enabled
Writing this register when the Timer is set to 32-bit mode has no effect.
Reading this register when the Timer is set to 32-bit mode returns the
reset value.