56F8036 datasheet(84/164 Pages) FREESCALE

84 / 164 page

56F8036 Data Sheet, Rev. 6

Freescale Semiconductor

most recent reset source will be indicated if multiple resets occur. If multiple reset sources assert

simultaneously, the highest-precedence source will be indicated. The precedence from highest to lowest is

Power-On Reset, External Reset, COP Loss of Reference Reset, COP Time-Out Reset, and Software

Reset. Power-On Reset is always set during a Power-On Reset; however, Power-On Reset will be cleared

and External Reset will be set if the external reset pin is asserted or remains asserted after the Power-On

Reset has deasserted.

Figure 6-3 SIM Reset Status Register (SIM_RSTAT)

6.3.2.1

Reserved—Bits 15–7

This bit field is reserved. Each bit must be set to 0.

6.3.2.2

Software Reset (SWR)—Bit 6

When set, this bit indicates that the previous system reset occurred as a result of a software reset (written

1 to SWRST bit in the SIM_CTRL register).

6.3.2.3

COP Time-Out Reset (COP_TOR)—Bit 5

When set, this bit indicates that the previous system reset was caused by the Computer Operating Properly

(COP) module signaling a COP time-out reset. If COP_TOR is set as code starts executing, the COP reset

vector in the vector table will be used. Otherwise, the normal reset vector is used.

6.3.2.4

COP Loss of Reference Reset (COP_LOR)—Bit 4

When set, this bit indicates that the previous system reset was caused by the Computer Operating Properly

(COP) module signaling a loss of COP reference clock reset. If COP_LOR is set as code starts executing,

the COP reset vector in the vector table will be used. Otherwise, the normal reset vector is used.

6.3.2.5

External Reset (EXTR)—Bit 3

When set, this bit indicates that the previous system reset was caused by an external reset.

6.3.2.6

Power-On Reset (POR)—Bit 2

This bit is set during a Power-On Reset.

6.3.2.7

Reserved—Bits 1–0

This bit field is reserved. Each bit must be set to 0.

Base + $1

Read

0SWR

COP_

TOR

COP_

LOR

EXTR

POR

Write

RESET

56F8036 Datasheet(PDF) 84 Page - Freescale Semiconductor, Inc

56F8036 Datasheet(HTML) 84 Page - Freescale Semiconductor, Inc

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL