CY28349B Cypress Semiconductor, CY28349B Datasheet - Page 9

• Manufacturer Part Number: CY28349B
• Description: FTG
• Manufacturer: Cypress Semiconductor

Data Byte 8 (continued)
Data Byte 9
Document #: 38-07454 Rev. *A
Bit 0
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Bit
Bit
Pin#
Pin#
–
–
–
–
–
–
–
–
–
WD_PRE_SCALER
48MHz_DRV
PCI_DRV
3V66_DRV
RST_EN_WD
RST_EN_FC
WD_TO_STATUS
WD_EN
Reserved
Name
Name
0 = 150 ms
1 = 2.5 sec
48MHz and 24_48MHz clock output drive strength
0 = Normal
1 = High Drive
(Recommend to set to high drive if this output is being
used to drive both USB and SIO devices in Intel Brookdale
- G platforms)
PCI clock output drive strength
0 = Normal
1 = High Drive
3V66 clock output drive strength
0 = Normal
1 = High Drive
This bit will enable the generation of a Reset pulse when
a Watchdog timer time-out occurs.
0 = Disabled
1 = Enabled
This bit will enable the generation of a Reset pulse after a
frequency change occurs.
0 = Disabled
1 = Enabled
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 = Stop and reload Watchdog Timer
1 = Enable Watchdog Timer. It will start counting down
after a frequency change occurs.
Note: CY28349B will generate system reset, reload a
recovery frequency, and lock itself into a recovery
frequency mode after a Watchdog Timer time-out occurs.
Under recovery frequency mode, CY28349B will not
respond to any attempt to change output frequency via the
SMBus control bytes. System software can unlock
CY28349B from its recovery frequency mode by clearing
the WD_EN bit.
Reserved
Pin Description
Pin Description
CY28349B
Page 9 of 22
Power On
Power On
Default
Default
0
0
0
0
0
0
0
0
0