MSC8113 Reference Manual, Rev. 0
15-2
Freescale Semiconductor
Hardware Semaphores
The hardware semaphore registers reside in the 256 KB address space of the IPBus and have a
constant offset. They are accessed through the SQBus, the system bus, and the DSI. The
addresses of the hardware semaphore registers for accesses through the SQBus are presented in
Section 8.5, IPBus Address Space, on page 8-12. The addresses of the hardware semaphore
registers for accesses through the system bus are presented in Section 8.7, System Bus Address
Space, on page 8-55. The addresses of the hardware semaphore registers for accesses through the
DSI are presented in Section 8.8, DSI Address Map, on page 8-61.
Figure 15-1. Hardware Semaphore Block Diagram
HSMPR[0–7]
Hardware Semaphore Register 0–7
Bit
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
—
Type
R
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
—
SMPVAL
Type
R
R/W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Table 15-1. HSMPRx Bit Descriptions
Name
Reset
Description
Settings
—
0–23
0
Reserved. Write to zero for future compatibility.
SMPVAL
24–31
0
Semaphore Value
The eight-bit coded semaphore value. It holds
the current semaphore value. A non-zero value
indicates the current lock code.
0
Semaphore is free. It is writable to any
value.
≠
0 Semaphore is locked with lock code
indicated by its current value. It is writable
only to zero.
(=0)
Write Value
Write Control
1
0
1
0
SM
PV
AL
Clock
8
8
8
8
Read
Value
Free
(=0)
Free
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 ...