136
Chapter 4
Clock Generator
Preliminary User’s Manual U17566EE1V2UM00
4.2 Clock Generator Registers
The Clock Generator is controlled and operated by means of the following
registers (the list is sorted according to memory allocation):
Note
Some registers are write-protected to avoid inadvertent changes. Data can be
written to these registers only in a special sequence of instructions, so that the
register contents is not easily rewritten in case of a program hang-up.
Writing to a protected register is only possible immediately after writing to the
associated write protection register.
Table 4-3
Clock Generator register overview
Register name
Shortcut
Address
Write- protected
by register
PSC write protection register
PRCMD
FFFF F1FC
H
Power save control register
PSC
FFFF F1FE
H
PRCMD
Stand-by control register
STBCTL
FFFF FCA2
H
STBCTLP
Stand-by control protection register
STBCTLP
FFFF FCAA
H
Sub oscillator clock monitor control register
CLMCS
FFFF F71A
H
Command protection register
PHCMD
FFFF F800
H
Peripheral status register
PHS
FFFF F802
H
Power save mode register
PSM
FFFF F820
H
Clock Generator control register
CKC
FFFF F822
H
PHCMD
Clock Generator status register
CGSTAT
FFFF F824
H
Watchdog timer clock control register
WCC
FFFF F826
H
PHCMD
Processor clock control register
PCC
FFFF F828
H
PHCMD
SSCG Frequency modulation control register
SCFMC
FFFF F82A
H
SSCG Frequency control 0 register
SCFC0
FFFF F82C
H
SSCG Frequency control 1 register
SCFC1
FFFF F82E
H
SSCG post scaler control register
SCPS
FFFF F830
H
SPCLK control register
SCC
FFFF F832
H
PHCMD
FOUTCLK control register
FCC
FFFF F834
H
PHCMD
Watch Timer clock control register
TCC
FFFF F836
H
PHCMD
IIC clock control register
ICC
FFFF F838
H
PHCMD
Main oscillator clock monitor mode register
CLMM
FFFF F870
H
PRCMDCMM
Sub oscillator clock monitor mode register
CLMS
FFFF F878
H
PRCMDCMS
CLMM write protection register
PRCMDCMM
FFFF FCB0
H
CLMS write protection register
PRCMDCMS
FFFF FCB2
H
electronic components distributor