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CY28325OXC-3T Datasheet(PDF) 10 Page - SpectraLinear Inc

Part # CY28325OXC-3T
Description  FTG for VIA??Pentium 4??Chipsets
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Manufacturer  SPECTRALINEAR [SpectraLinear Inc]
Direct Link  http://www.spectralinear.com
Logo SPECTRALINEAR - SpectraLinear Inc

CY28325OXC-3T Datasheet(HTML) 10 Page - SpectraLinear Inc

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CY28325-3
Rev 1.0, November 21, 2006
Page 10 of 18
2
WD_TO_STAT
US
Watchdog Timer Time-out Status Bit
0 = No time-out occurs (Read); Ignore (Write)
1 = time-out occurred (Read); Clear WD_TO_STATUS (Write)
0
1
WD_EN
0 = Stop and re-load Watchdog timer
1 = Enable Watchdog timer. It will start counting down after a frequency
change occurs.
Note:CY28325-3 will generate system reset, re-load a recovery frequency,
and lock itself into a recovery frequency mode after a Watchdog timer
time-out occurs. Under recovery frequency mode, CY28325-2 will not
respond to any attempt to change the output frequency via the SMBus
control bytes. System software can unlock the CY28325-3 from its recovery
frequency mode by clearing the WD_EN bit.
0
0
Reserved
Reserved
0
Data Byte 10
Bit
Pin#
Name
Pin Description
Power-on
Default
7
CPU_CS_F Skew2
CPU_CS_F Skew Control
000 = Normal
001 = –150 ps
010 = –300 ps
011 = –450 ps
100 = +150 ps
101 = +300 ps
110 = +450 ps
111 = +600 ps
0
6
CPU_CS_F Skew1
0
5
CPU_CS_F Skew0
0
4
CPU_Skew2
CPUT_0:1 and CPUC_0:1 Skew Control
000 = Normal
001 = –150 ps
010 = –300 ps
011 = –450 ps
100 = +150 ps
101 = +300 ps
110 = +450 ps
111 = +600 ps
0
3
CPU_Skew1
0
2
CPU_Skew0
0
1
AGP_Skew1
AGP Skew control
00 = Normal
01 = –150 ps
10 = +150 ps
11 = +300 ps
0
0
AGP_Skew0
0
Data Byte 11
Bit
Pin#
Name
Pin Description
Power-on
Default
7
ROCV_FREQ_N7
If ROCV_FREQ_SEL is set, the values programmed in
ROCV_FREQ_N[7:0] and ROCV_FREQ_M[6:0] will be used to
determine the recovery CPU output frequency when a Watchdog Timer
time-out occurs. The setting of FS_Override bit determines the frequency
ratio for CPU and other output clocks. When FS_Override bit is cleared,
the same frequency ratio stated in the Latched FS[4:0] register will be
used. When it is set, the frequency ratio stated in the SEL[4:0] register
will be used.
0
6
ROCV_FREQ_N6
0
5
ROCV_FREQ_N5
0
4
ROCV_FREQ_N4
0
3
ROCV_FREQ_N3
0
2
ROCV_FREQ_N2
0
1
ROCV_FREQ_N1
0
0
ROCV_FREQ_N0
0
Data Byte 9 (continued)
Bit
Pin#
Name
Pin Description
Power-on
Default


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