TC1796
System Units (Vol. 1 of 2)
Direct Memory Access Controller
User’s Manual 12-108 V2.0, 2007-07
DMA, V2.0
12.3.3.4 System Interrupt Service Request Control Register
System interrupts of other on-chip modules are controlled by five system service request
control registers which are located in the DMA address space. The five system service
request registers are used according Table 12-14.
Table 12-14 Assignment of System Interrupt Nodes
System Service Request Node Connected to System Interrupt Source
DMA_SYSSCR0 Floating Point Unit (FPU) interrupt
(see also Page 5-35)
DMA_SYSSCR1 Flash module interrupt (see also Page 7-36)
DMA_SYSSCR2 External Interrupt 0 (see also Page 5-36)
DMA_SYSSCR3 External Interrupt 1 (see also Page 5-36)
DMA_SYSSCR4 None; can be used as software interrupt
DMA_SYSSRCx (x = 0-4)
DMA System Interrupt Service Request Control Register x
(29C
H
-x*4
H
) Reset Value: 0000 0000
H
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
0
r
1514131211109876543210
SET
R
CLR
R
SRR SRE 0 TOS 0 SRPN
w w rh rw r rw r rw
Field Bits Type Description
SRPN [7:0] rw Service Request Priority Number
TOS 10 rw Type of Service Control
SRE 12 rw Service Request Enable
SRR 13 rh Service Request Flag
CLRR 14 w Request Clear Bit
SETR 15 w Request Set Bit
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