MSC8113 Reference Manual, Rev. 0
Freescale Semiconductor
5-1
Reset
5
All MSC8113 reset sources are fed into the reset controller, which takes different actions
depending on the source of the reset. The Reset Status Register indicates the most recent sources
to cause a reset. Table 5-1 describes the reset sources.
Table 5-1. Reset Sources
Name Direction
Description
Power-on reset
(PORESET)
Input
Initiates the power-on reset flow that resets the MSC8113 and configures various
attributes of the device. On PORESET, the entire MSC8113 device is reset. SPLL state
is reset, HRESET and SRESET are driven, the SC140 extended cores are reset, and
system configuration is sampled. The clock mode (MODCK bits), reset configuration
mode, boot mode, Chip ID, DSI sync or a-sync mode, Software Watch Dog Timer
Enable, and use of either a DSI 64-bit port or a 60x-compatible system bus 64-bit port
are configured only at the rising edge of PORESET.
External hard
reset
(HRESET)
I/O
Initiates the hard reset flow that configures various attributes of the MSC8113. During
HRESET, SRESET is asserted. HRESET is an open-drain output. Upon hard reset,
HRESET and SRESET are driven, the SC140 extended cores are reset, and system
configuration is sampled. The most configurable features are reconfigure. These
features are defined in the 32-bit HRCW described in Section 5.6.1, Hard Reset
Configuration Word, on page 5-13.
External soft
reset
(SRESET)
I/O
Initiates the soft reset flow. The MSC8113 device detects an external assertion of
SRESET only if it occurs while the MSC8113 is not asserting reset. SRESET is an
open-drain output. Upon soft reset, SRESET is driven, the SC140 extended cores are
reset, and system configuration is maintained.
Software
watchdog reset
When the MSC8113 watchdog count reaches zero, a software watchdog reset is
signalled. The enabled software watchdog event then generates an internal hard reset
sequence.
Bus monitor
reset
When the MSC8113 bus monitor count reaches zero, a bus monitor hard reset is
asserted. The enabled bus monitor event then generates an internal hard reset
sequence.
JTAG
Commands:
EXTEST,
CLAMP, or
HIGH-Z
When one of JTAG commands EXTEST, CLAMP or HIGHZ is executed, JTAG logic
asserts the JTAG soft reset signal and an internal soft reset sequence is generated.
Содержание MSC8113
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Страница 56: ...MSC8113 Reference Manual Rev 0 1 28 Freescale Semiconductor MSC8113 Overview ...
Страница 76: ...MSC8113 Reference Manual Rev 0 2 20 Freescale Semiconductor SC140 Core Overview ...
Страница 134: ...MSC8113 Reference Manual Rev 0 4 30 Freescale Semiconductor System Interface Unit SIU ...
Страница 168: ...MSC8113 Reference Manual Rev 0 6 18 Freescale Semiconductor Boot Program ...
Страница 180: ...MSC8113 Reference Manual Rev 0 7 12 Freescale Semiconductor Clocks ...
Страница 260: ...MSC8113 Reference Manual Rev 0 8 80 Freescale Semiconductor Memory Map ...
Страница 300: ...MSC8113 Reference Manual Rev 0 9 40 Freescale Semiconductor Extended Core ...
Страница 304: ...MSC8113 Reference Manual Rev 0 10 4 Freescale Semiconductor MQBus and M2 Memory ...
Страница 308: ...MSC8113 Reference Manual Rev 0 11 4 Freescale Semiconductor SQBus ...
Страница 544: ...MSC8113 Reference Manual Rev 0 16 46 Freescale Semiconductor Direct Memory Access DMA Controller ...
Страница 590: ...MSC8113 Reference Manual Rev 0 17 46 Freescale Semiconductor Interrupt Processing ...
Страница 614: ...MSC8113 Reference Manual Rev 0 18 24 Freescale Semiconductor Debugging ...
Страница 622: ...MSC8113 Reference Manual Rev 0 19 8 Freescale Semiconductor Internal Peripheral Bus IPBus ...
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Страница 1172: ...MSC8113 Reference Manual Rev 0 C 62 Freescale Semiconductor MSC8113 Boot Code ...
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