MSC8113 Reference Manual, Rev. 0
4-28
Freescale Semiconductor
System Interface Unit (SIU)
PISCR contains the interrupt request level and the interrupt status bit. It also contains the controls
for the 16 bits to be loaded in a modulus counter.
PITC contains the 16 bits to be loaded in a modulus counter.
PISCR
Periodic Interrupt Status and Control Register
Bit
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
—
PS
—
PIE
PTF
PTE
Type
R/W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Table 4-14. PISCR Bit Descriptions
Name
Reset
Description
Settings
—
0–7
0
Reserved. Write to zero for future compatibility.
PS
8
0
Periodic Interrupt Status
The PIT issues an interrupt after the modulus
counter counts to zero.
0
No effect on PS.
1
Deasserts PS.
—
9–12
0
Reserved. Write to zero for future compatibility.
PIE
13
0
Periodic Interrupt Enable
Enables or disables a periodic interrupt.
0
The period interrupt timer does not
generate an interrupt.
1 The periodic interrupt timer generates an
interrupt when PS = 1.
PTF
14
0
Periodic Interrupt Frequency
The input clock to the periodic interrupt timer
may be either 4 MHz or 32 KHz. You should set
the PTF bit according to the frequency of this
clock. See Section 4.1.2, Timers Clock.
0
The input clock to the periodic interrupt
timer is 4 MHz.
1
The input clock to the periodic interrupt
timer is 32 KHz.
PTE
15
0
Periodic Timer Enable
Controls the counting of the periodic interrupt
timer. When the timer is disabled, it maintains
its old value. When the counter is enabled, it
continues counting using the previous value.
0
Disable counter.
1
Enable counter.
PITC
Periodic Interrupt Timer Count Register
Bit
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
PITC
Type
R/W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Bit
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
—
Type
R/W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Summary of Contents for MSC8113
Page 1: ...MSC8113 Reference Manual Tri Core 16 Bit Digital Signal Processor MSC8113RM Rev 0 May 2008 ...
Page 20: ...MSC8113 Reference Manual Rev 0 xx Freescale Semiconductor Contents ...
Page 28: ...MSC8113 Reference Manual Rev 0 xxviii Freescale Semiconductor ...
Page 56: ...MSC8113 Reference Manual Rev 0 1 28 Freescale Semiconductor MSC8113 Overview ...
Page 76: ...MSC8113 Reference Manual Rev 0 2 20 Freescale Semiconductor SC140 Core Overview ...
Page 134: ...MSC8113 Reference Manual Rev 0 4 30 Freescale Semiconductor System Interface Unit SIU ...
Page 168: ...MSC8113 Reference Manual Rev 0 6 18 Freescale Semiconductor Boot Program ...
Page 180: ...MSC8113 Reference Manual Rev 0 7 12 Freescale Semiconductor Clocks ...
Page 260: ...MSC8113 Reference Manual Rev 0 8 80 Freescale Semiconductor Memory Map ...
Page 300: ...MSC8113 Reference Manual Rev 0 9 40 Freescale Semiconductor Extended Core ...
Page 304: ...MSC8113 Reference Manual Rev 0 10 4 Freescale Semiconductor MQBus and M2 Memory ...
Page 308: ...MSC8113 Reference Manual Rev 0 11 4 Freescale Semiconductor SQBus ...
Page 590: ...MSC8113 Reference Manual Rev 0 17 46 Freescale Semiconductor Interrupt Processing ...
Page 614: ...MSC8113 Reference Manual Rev 0 18 24 Freescale Semiconductor Debugging ...
Page 622: ...MSC8113 Reference Manual Rev 0 19 8 Freescale Semiconductor Internal Peripheral Bus IPBus ...
Page 724: ...MSC8113 Reference Manual Rev 0 21 32 Freescale Semiconductor UART ...
Page 920: ...MSC8113 Reference Manual Rev 0 25 150 Freescale Semiconductor Ethernet Controller ...
Page 1171: ...MSC8113 Reference Manual Rev 0 Freescale Semiconductor C 61 EF wait_rts P 01077FFC 9F rts 71 ...
Page 1172: ...MSC8113 Reference Manual Rev 0 C 62 Freescale Semiconductor MSC8113 Boot Code ...
Page 1202: ...MSC8113 Reference Manual Rev 0 Index 30 Freescale Semiconductor Index ...