Clocks and Power Control
MPC561/MPC563 Reference Manual, Rev. 1.2
8-26
Freescale Semiconductor
A write of 0x55CCAA33 to the associated key register changes the key to the open state. A write of any
other data to this location changes the key to the locked state. The key registers are write-only. A read of
the key register has undefined side effects and may be interpreted as a write that locks the associated
register.
lists the registers powered by KAPWR and the associated key registers.
Table 8-8. KAPWR Registers and Key Registers
KAPWR Register
Associated Key Register
Address or
SPR Number
Register
Address
Register
0x2F C200
Time Base Status and Control (TBSCR)
See
for bit descriptions.
0x2F C300
Time Base Status and Control Key
(TBSCRK)
0x2F C204
Time Base Reference 0 (TBREF0)
See
Reference Registers (TBREF0 and
TBREF1)
” for bit descriptions.
0x2F C304
Time Base Reference 0 Key (TBREF0K)
0x2F C208
Time Base Reference 1 (TBREF1)
See
Reference Registers (TBREF0 and
TBREF1)
for bit descriptions.
0x2F C308
Time Base Reference 1 Key (TBREF1K)
0x2F C220
Real Time Clock Status and Control
(RTCSC)
See
for bit descriptions. This
register is locked after reset by default.
0x2F C320
Real Time Clock Status and Control Key
(RTCSCK)
0x2F C224
Real Time Clock (RTC)
See
Section 6.2.2.4.6, “Real-Time Clock
” for bit descriptions. This
register is locked after reset by default.
0x2F C324
Real Time Clock Key (RTCK)
0x2F C228
Real Time Alarm Seconds (RTSEC)
Reserved. This register is locked after
reset by default.
0x2F C328
Real Time Alarm Seconds Key (RTSECK)
0x2F C22C
Real Time Alarm (RTCAL)
See
Section 6.2.2.4.7, “Real-Time Clock
” for bit
descriptions. This register is locked after
reset by default.
0x2F C32C
Real Time Alarm Key (RTCALK)
0x2F C240
PIT Status and Control (PISCR)
See
for bit descriptions.
0x2F C340
PIT Status and Control Key (PISCRK)
0x2F C244
PIT Count (PITC)
See
for bit descriptions.
0x2F C344
PIT Count Key (PITCK)
0x2F C280
System Clock Control Register (SCCR)
See
for bit descriptions.
0x2F C380
System Clock Control Key (SCCRK)
0x2F C284
PLL Low-Power and Reset-Control
Register (PLPRCR)
See
for bit descriptions.
0x2F C384
PLL Low-Power and Reset-Control
Register Key (PLPRCRK)
Summary of Contents for MPC561
Page 84: ...MPC561 MPC563 Reference Manual Rev 1 2 lxxxiv Freescale Semiconductor...
Page 144: ...Signal Descriptions MPC561 MPC563 Reference Manual Rev 1 2 2 46 Freescale Semiconductor...
Page 206: ...Central Processing Unit MPC561 MPC563 Reference Manual Rev 1 2 3 62 Freescale Semiconductor...
Page 302: ...Reset MPC561 MPC563 Reference Manual Rev 1 2 7 14 Freescale Semiconductor...
Page 854: ...Time Processor Unit 3 MPC561 MPC563 Reference Manual Rev 1 2 19 24 Freescale Semiconductor...
Page 968: ...Development Support MPC561 MPC563 Reference Manual Rev 1 2 23 54 Freescale Semiconductor...
Page 1144: ...Internal Memory Map MPC561 MPC563 Reference Manual Rev 1 2 B 34 Freescale Semiconductor...
Page 1212: ...TPU3 ROM Functions MPC561 MPC563 Reference Manual Rev 1 2 D 60 Freescale Semiconductor...
Page 1216: ...Memory Access Timing MPC561 MPC563 Reference Manual Rev 1 2 E 4 Freescale Semiconductor...