K60P100M100SF2RM Datasheet, PDF (298/1809 Pages) Freescale Semiconductor, Inc – K60 Sub-Family Reference Manual

Memory map and register definition
12.2.16 System Clock Divider Register 2 (SIM_CLKDIV2)
Address: SIM_CLKDIV2 is 4004_7000h base + 1048h offset = 4004_8048h
Bit 31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
R
0
I2SDIV
W
Reset 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Bit 15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
R
I2SFRAC
W
0
USBDIV
Reset 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
SIM_CLKDIV2 field descriptions
Field
31–20
I2SDIV
Description
I2S clock divider value
This field sets the divide value for when the fractional clock divider is used as the source for the I²S
master clock. The clock input to the fractional clock divider is set by the SOPT2[I2SSRC] bit.
Divider output clock = Divider input clock × [(I2SFRAC+1) / (I2SDIV+1) ]
19–16
Reserved
15–8
I2SFRAC
NOTE: The I2S clock must be disabled (SCGC6[I2S] = 0) before altering this bitfield.
This read-only field is reserved and always has the value zero.
I2S clock divider fraction
This field sets the multiply value for when the fractional clock divider is used as a the source for I²S
master clock. The clock input to the fractional clock divider is set by the SOPT2[I2SSRC] bit.
Divider output clock = Divider input clock × [(I2SFRAC+1) / (I2SDIV+1) ]
7–4
Reserved
3–1
USBDIV
0
USBFRAC
NOTE: The I2S clock must be disabled (SCGC6[I2S] = 0) before altering this bitfield.
This read-only field is reserved and always has the value zero.
USB clock divider divisor
This field sets the divide value for the fractional clock divider when the MCGFLLCLK/MCGPLLCLK clock
is the USB clock source (SOPT2[USBSRC] = 1).
Divider output clock = Divider input clock × [ (USBFRAC+1) / (USBDIV+1) ]
USB clock divider fraction
This field sets the fraction multiply value for the fractional clock divider when the MCGFLLCLK/
MCGPLLCLK clock is the USB clock source (SOPT2[USBSRC] = 1).
Divider output clock = Divider input clock × [ (USBFRAC+1) / (USBDIV+1) ]
K60 Sub-Family Reference Manual, Rev. 6, Nov 2011
298
Freescale Semiconductor, Inc.