PXD20RM Datasheet, PDF (931/1628 Pages) Freescale Semiconductor, Inc – PXD20 Microcontroller

Table 26-6. INTC_SSCIR[0:7] Field Descriptions
Field
SET
CLR
Description
Set Flag Bits. Writing a 1 sets the corresponding CLRx bit. Writing a 0 has no effect. Each SETx
always will be read as a 0.
Clear Flag Bits. CLRx is the flag bit. Writing a 1 to CLRx clears it provided that a 1 is not written
simultaneously to its corresponding SETx bit. Writing a 0 to CLRx has no effect.
0 Interrupt request not pending within INTC.
1 Interrupt request pending within INTC.
The software set/clear interrupt registers support the setting or clearing of software configurable interrupt
request. These registers contain eight independent sets of bits to set and clear a corresponding flag bit by
software. Excepting being set by software, this flag bit behaves the same as a flag bit set within a
peripheral. This flag bit generates an interrupt request within the INTC like a peripheral interrupt request.
Writing a 1 to SETx will leave SETx unchanged at 0 but sets CLRx. Writing a 0 to SETx has no effect.
CLRx is the flag bit. Writing a 1 to CLRx clears it. Writing a 0 to CLRx has no effect. If a 1 is written
simultaneously to a pair of SETx and CLRx bits, CLRx will be asserted, regardless of whether CLRx was
asserted before the write.
26.5.2.6 INTC Priority Select Registers (INTC_PSR0_3–INTC_PSR206_238)
Offset: 0x0040
Access: User read/write
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
R₀
0
0
0
PRI0
0
0
0
0
PRI1
W
Reset ₀
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
R₀
0
0
0
PRI2
0
0
0
0
PRI3
W
Reset ₀
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Figure 26-8. INTC Priority Select Register 0–3 (INTC_PSR[0:3])
Freescale Semiconductor
PXD20 Microcontroller Reference Manual, Rev. 1
Preliminary—Subject to Change Without Notice
26-9