
Register Descriptions
56F8322 Technical Data, Rev. 10.0
Freescale Semiconductor 81
Preliminary
6.5.1.2 OnCE Enable (ONCE EBL)—Bit 5
• 0 = OnCE clock to 56800E core enabled when core TAP is enabled
• 1 = OnCE clock to 56800E core is always enabled
6.5.1.3 Software Reset (SW RST)—Bit 4
Writing 1 to this field will cause the part to reset.
6.5.1.4 Stop Disable (STOP_DISABLE)—Bits 3–2
• 00 = Stop mode will be entered when the 56800E core executes a STOP instruction
• 01 = The 56800E STOP instruction will not cause entry into Stop mode; STOP_DISABLE can be
reprogrammed in the future
• 10 = The 56800E STOP instruction will not cause entry into Stop mode; STOP_DISABLE can then only be
changed by resetting the device
• 11 = Same operation as 10
6.5.1.5 Wait Disable (WAIT_DISABLE)—Bits 1–0
• 00 = Wait mode will be entered when the 56800E core executes a WAIT instruction
• 01 = The 56800E WAIT instruction will not cause entry into Wait mode; WAIT_DISABLE can be
reprogrammed in the future
• 10 = The 56800E WAIT instruction will not cause entry into Wait mode; WAIT_DISABLE can then only
be changed by resetting the device
• 11 = Same operation as 10
6.5.2 SIM Reset Status Register (SIM_RSTSTS)
Bits in this register are set upon any system reset and are initialized only by a Power-On Reset (POR). A
reset (other than POR) will only set bits in the register; bits are not cleared. Only software should clear this
register.
Figure 6-4 SIM Reset Status Register (SIM_RSTSTS)
6.5.2.1 Reserved—Bits 15–6
This bit field is reserved or not implemented. It is read as zero and cannot be modified by writing.
6.5.2.2 Software Reset (SWR)—Bit 5
When 1, this bit indicates that the previous reset occurred as a result of a software reset (write to SW RST
bit in the SIM_CONTROL register). This bit will be cleared by any hardware reset or by software. Writing
a 0 to this bit position will set the bit, while writing a 1 to the bit will clear it.
Base + $1
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Read
0 0 0 0 0 0 0 0 0 0
SWR COPR EXTR POR
0 0
Write
RESET
0000000000 00
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