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CY28439OXCT Datasheet(PDF) 8 Page - SpectraLinear Inc

Part # CY28439OXCT
Description  Clock Generator for Intel Grantsdale Chipset
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Manufacturer  SPECTRALINEAR [SpectraLinear Inc]
Direct Link  http://www.spectralinear.com
Logo SPECTRALINEAR - SpectraLinear Inc

CY28439OXCT Datasheet(HTML) 8 Page - SpectraLinear Inc

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CY28439
Rev 1.0, November 21, 2006
Page 8 of 21
Byte 9: Control Register 9
Bit
@Pup
Name
Description
7
0
RESERVED
RESERVED
60
50
40
3
0
FSEL_D
SW Frequency selection bits. See Table 1.
20
FSEL_C
1
0
FSEL_B
0
0
FSEL_A
Byte 10: Control Register 10
Bit
@Pup
Name
Description
7
0
Recovery_Frequency
This bit allows selection of the frequency setting that the clock will be
restored to once the system is rebooted
0: Use HW settings 1: Recovery N[8:0]
6
0
Timer_SEL
Timer_SEL selects the WD reset function at SRESET pin when WD time
out.
0 = Reset and Reload Recovery_Frequency
1 = Only Reset
5
1
Time_Scale
Time_Scale allows selection of WD time scale
0 = 294 ms
1 = 2.34 s
4
0
WD_Alarm
WD_Alarm is set to “1” when the Watchdog times out. It is reset to “0”
when the system clears the WD_TIMER time stamp.
3
0
WD_TIMER2
Watchdog timer time stamp selection
000: Reserved (test mode)
001: 1 * Time_Scale
010: 2 * Time_Scale
011: 3 * Time_Scale
100: 4 * Time_Scale
101: 5 * Time_Scale
110: 6 * Time_Scale
111: 7 * Time_Scale
20
WD_TIMER1
10
WD_TIMER0
0
0
WD_EN
Watchdog timer enable, when the bit is asserted, Watchdog timer is
triggered and time stamp of WD_Timer is loaded
0 = Disable, 1 = Enable
Byte 11: Control Register 11
Bit
@Pup
Name
Description
7
0
CPU_DAF_N7
If Prog_CPU_EN is set, the values programmed in CPU_DAF_N[8:0] and
CPU_DAF_M[6:0] will be used to determine the CPU output frequency.
The setting of FS_Override bit determines the frequency ratio for CPU and
other output clocks. When it is cleared, the same frequency ratio stated in
the Latched FS[E:A] register will be used. When it is set, the frequency
ratio stated in the FSEL[3:0] register will be used.
6
0
CPU_DAF_N6
5
0
CPU_DAF_N5
4
0
CPU_DAF_N4
3
0
CPU_DAF_N3
2
0
CPU_DAF_N2
1
0
CPU_DAF_N1
0
0
CPU_DAF_N0


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