Reset
MPC8260 PowerQUICC II Family Reference Manual, Rev. 2
5-4 Freescale Semiconductor
5.2 Reset Status Register (RSR)

The reset status register (RSR), shown in Figure5-2, is memory-mapped into the PowerQUICC II’s SIU

register map.

Tabl e 5-3 describes RSR fields.

015
Field —
R/W R/W
Reset 0000_0000_0000_0000
Addr 0x10C90
16 25 26 27 28 29 30 31
Field JTRS CSRS SWRS BMRS ESRS EHRS
R/W R/W
Reset 0000_0000_0000_0011
Addr 0x10C92

Figure 5-2. Reset Status Register (RSR)

Table5-3. RSR Field Descriptions

Bits Name Function
0–25 Reserved, should be cleared.
26 JTRS JTAG reset status. When the JTAG reset request is set, JTRS is set and remains set until software
clears it. JTRS is cleared by writing a 1 to it (writing zero has no effect).
0 No JTAG reset event occurred
1 A JTAG reset event occurred
27 CSRS Check stop reset status. When the core enters a checkstop state and the checkstop reset is enabled
by the RMR[CSRE], CSRS is set and it remains set until software clears it. CSRS is cleared by
writing a 1 to it (writing zero has no effect).
0 No enabled check stop reset event occurred
1 An enabled check stop reset event occurred
28 SWRS Software watchdog reset status. When a software watchdog expire event (which causes a reset) is
detected, the SWRS bit is set and remains that way until the software clears it. SWRS is cleared by
writing a 1 to it (writing zero has no effect).
0 No software watchdog reset event occurred
1 A software watchdog reset event has occurred
29 BMRS Bus monitor reset status. When a bus monitor expire event (which causes a reset) is detected,
BMRS is set and remains set until the software clears it. BMRS can be cleared by writing a 1 to it
(writing zero has no effect).
0 No bus monitor reset event has occurred
1 A bus monitor reset event has occurred