s3c2410a Samsung Semiconductor, Inc., s3c2410a Datasheet - Page 292

• Manufacturer Part Number: s3c2410a
• Description: 16/32-bit Risc Arm Microprocessor
• Manufacturer: Samsung Semiconductor, Inc.

PWM TIMER
DMA REQUEST MODE
The PWM timer can generate a DMA request at every specific time. The timer keeps DMA request signals
(nDMA_REQ) low until the timer receives an ACK signal. When the timer receives the ACK signal, it makes the
request signal inactive. The timer, which generates the DMA request, is determined by setting DMA mode bits (in
TCFG1 register). If one of timers is configured as DMA request mode, that timer does not generate an interrupt
request. The others can generate interrupt normally.
DMA mode configuration and DMA / interrupt operation
10-10
DMA Mode
0000
0001
0010
0011
0100
0101
0110
PCLK
INT4tmp
DMAreq_en
nDMA_ACK
nDMA_REQ
INT4
DMA Request
No select
No select
Timer0
Timer1
Timer2
Timer3
Timer4
Figure 10-8. Timer4 DMA Mode Operation
1 0 1
Timer0 INT
OFF
ON
ON
ON
ON
ON
ON
Timer1 INT
OFF
ON
ON
ON
ON
ON
ON
Timer2 INT
OFF
ON
ON
ON
ON
ON
ON
Timer3 INT
OFF
ON
ON
ON
ON
ON
ON
Timer4 INT
S3C2410A
OFF
ON
ON
ON
ON
ON
ON