Reset Control Register (Rcr); Memory Map And Registers; Reset Controller Memory Map; Rcr Field Descriptions - Motorola ColdFire MCF5281 User Manual

28.4 Memory Map and Registers

The reset controller programming model consists of these registers:
• Reset control register (RCR), which selects reset controller functions
• Reset status register (RSR), which reflects the state of the last reset source
See Table 28-2 for the memory map and the following paragraphs for a description of the
registers.
IPSBAR Offset
0x11_0000
0x11_0001
0x11_0002
0x11_0003
1
S/U = supervisor or user mode access.
2
Writes to reserved address locations have no effect and reads return 0s.

28.4.1 Reset Control Register (RCR)

The RCR allows software control for requesting a reset, for independently asserting the
external RSTO pin, and for controlling low-voltage detect (LVD) functions.
Field SOFTRST
Reset
R/W
Address
Bit(s) Name
7 SOFTRST
6 FRCRSTOUT
5 —
MOTOROLA
Table 28-2. Reset Controller Memory Map
Bits 7:0
Reserved
Reserved
7 6
FRCRSTOUT —
IPSBAR + 0x11_0000
Figure 28-2. Reset Control Register (RCR)
Table 28-3. RCR Field Descriptions
Allows software to request a reset. The reset caused by setting this bit clears this bit.
1 Software reset request
0 No software reset request
Allows software to assert or negate the external RSTO pin.
1 Assert RSTO pin
0 Negate RSTO pin
CAUTION: External logic driving reset configuration data during reset needs to be considered
when asserting the RSTO pin when setting FRCRSTOUT.
Reserved, should be cleared.
Chapter 28. Reset Controller Module
RCR
RSR
2
2
5 4
LVDF LVDIE LVDRE
0000_0101
R/W
Description
Memory Map and Registers
1
Access
S/U
S/U
—
—
0
— LVDE
28-3