CY28405 Cypress Semiconductor, CY28405 Datasheet - Page 6

• Manufacturer Part Number: CY28405
• Description: CK409-Compliant Clock Synthesizer
• Manufacturer: Cypress Semiconductor

Document #: 38-07512 Rev. *B
Byte 2: Control Register 2
Byte 3: Control Register 3
Byte 4: Control Register 4
7
6
5
4
3
2
1
0
Bit
Bit
Bit
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
@Pup
@Pup
@Pup
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
1
0
0
0
1
1
1
Reserved
Reserved
CPUT_ITP, CPUC_ITP
CPUT1, CPUC1
CPUT0, CPUC0
Reserved
Reserved
Reserved
Reserved
PCI5
PCI4
PCI3
PCI2
PCI1
PCI0
USB_48
USB_48
PCIF2
PCIF1
PCIF0
PCIF2
PCIF1
PCIF0
Name
Name
Name
Reserved, set = 0
Reserved, set = 0
CPUT/C_ITP Pwrdwn drive mode
0 = Driven in power- down, 1 = three-state
CPU(T/C)1 Pwrdwn drive mode
0 = Driven in power-down, 1 = three-state
CPU(T/C)0 Pwrdwn drive mode
0 = Driven in power-down, 1 = three-state
Reserved
Reserved
Reserved
SW PCI_STP Function
0= PCI_STP assert, 1= PCI_STP deassert
When this bit is set to 0, all STOPPABLE PCI and PCIF outputs will be
stopped in a synchronous manner with no short pulses.
When this bit is set to 1, all STOPPED PCI and PCIF outputs will resume
in a synchronous manner with no short pulses.
Reserved
PCI5 Output Enable
0 = Disabled, 1 = Enabled
PCI4 Output Enable
0 = Disabled, 1 = Enabled
PCI3 Output Enable
0 = Disabled, 1 = Enabled
PCI2 Output Enable
0 = Disabled, 1 = Enabled
PCI1 Output Enable
0 = Disabled, 1 = Enabled
PCI0 Output Enable
0 = Disabled, 1 = Enabled
USB 48 Drive Strength Control
0 = High Drive Strength, 1 = Low Drive Strength
USB_48 Output Enable
0 = Disabled, 1 = Enabled
Allow control of PCIF2 with assertion of SW PCI_STP
0 = Free Running, 1 = Stopped with SW PCI_STP
Allow control of PCIF1 with assertion of SW PCI_STP
0 = Free Running, 1 = Stopped with SW PCI_STP
Allow control of PCIF0 with assertion of SW PCI_STP
0 = Free Running, 1 = Stopped with SW PCI_STP
PCIF2 Output Enable
0 = Disabled, 1 = Enabled
PCIF1 Output Enable
0 = Disabled, 1 = Enabled
PCIF0 Output Enable
0 = Disabled, 1 = Enabled
Description
Description
Description
CY28405
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