AMD Elan SC520, User Manual, Page: 318 / 444

General-Purpose Timers
17-2 Élan™SC520 Microcontroller User’s Manual
Figure 17-1 General-Purpose Timers Block Diagram
17.4 REGISTERS
The general-purpose timers include the memory-mapped registers listed in Table 17-2.
Table 17-2 General-Purpose Timer Registers—Memory-Mapped
Register Mnemonic
MMCR
Offset
Address
Function
Chip Select Pin Function
Select CSPFS C24h TMROUTx, TMRINx, or GPCSx pin function
select
GP Timers Status GPTMRSTA C70h Interrupt status and clear for all three GP timers
GP Timer 0 Mode/Control GPTMR0CTL C72h GP Timer 0 enable, permit Enable bit write,
interrupt enable, maxcount register in use,
maximum count, retrigger, internal clock source
prescaler, external clock source, alternate
compare mode, continuous mode
GP Timer 0 Count GPTMR0CNT C74h Current count value
GP Timer 0 Maxcount
Compare A GPTMR0MAXC
MPA C76h Maxcount value A to compare with current count
GP Timer 0 Maxcount
Compare B GPTMR0MAXC
MPB C78h Maxcount value B, used in the alternate mode
GP Timer 1 Mode/Control GPTMR1CTL C7Ah GP Timer 1 enable, permit Enable bit write,
interrupt enable, maxcount register in use,
maximum count, retrigger, internal clock source
prescaler, external clock source, alternate
compare mode, continuous mode
GP Timer 1 Count GPTMR1CNT C7Ch Current count value
GP Timer 0
GP Timer 1
GP Timer 2
TMROUT0
TMROUT1
TMRIN0
33 MHz
TMRIN1
33 MHz
33 MHz
clk_pre
gpt_tmr0_irq
General-Purpose Timers
PIC
gpt_tmr1_irq
gpt_tmr2_irq
Élan™SC520 Microcontroller