149
Clock Generator
Chapter 4
Preliminary User’s Manual U17566EE1V2UM00
(4)
SCPS - SSCG post scaler control register
The 8-bit SCPS register controls the two independent SSCG post scalers
(frequency dividers) for the CPU system clock VBCLK.
Access
This register can be read/written in 8-bit or 1-bit units.
Address
FFFF F830
H
.
Initial Value
21
H
. The register is initialized by any reset.
Note
This register can only be written when the SSCG enable bit CKC.SCEN is
cleared (SSCG switched off).
7
6
5
4
3
2
1
0
0
0
a
a)
These bits must not be altered.
1
a
0
a
0
VBSPS2
VBSPS1
VBSPS0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Table 4-12
SCPS register contents
Bit position
Bit name
Function
2 to 0
VBSPS[2:0]
SSCG clock divider selection for generating VBCLK:
VBSPS2
VBSPS1
VBSPS0
Clock divider setting
0
0
0
VBCLK = SSCG out frequency / 1
0
0
1
VBCLK = SSCG out frequency / 2
0
1
0
VBCLK = SSCG out frequency / 3
0
1
1
VBCLK = SSCG out frequency / 4
1
0
0
not supported
1
0
1
VBCLK = SSCG out frequency / 6
1
1
0
not supported
1
1
1
VBCLK = SSCG out frequency / 8
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