cy24292 Cypress Semiconductor Corporation., cy24292 Datasheet - Page 6

• Manufacturer Part Number: cy24292
• Description: Four Outputs Pci-express Clock Generator
• Manufacturer: Cypress Semiconductor Corporation.

Control Registers
Table 5. Byte 0: Spread Spectrum Control Register
Table 6. Byte 1: Control Register
Table 7. Byte 2: Control Register
Table 8. Byte 3: Control Register
Table 9. Byte 4: Control Register
Document Number: 001-46142 Rev. *C
0 to 7
0 to 7
0 to 7
Bit
Bit
6,7
Bit
Bit
Bit
5
4
3
2
1
0
7
6
5
4
3
2
1
0
Type
Type
Type
Type
Type
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R
R
R
R
R
R
R
R
R
R
R
At Power up
At Power up
At Power up
At Power up
At Power up
Undefined
Undefined
Undefined
Undefined
Undefined
Undefined
Undefined
Undefined
Undefined
1
1
1
0
1
1
0
1
1
All 100 MHz PCI-Express
outputs
Not applicable
All outputs
Not applicable
Not applicable
Not applicable
Not applicable
Single-ended 25 MHz
output, 25M
Not applicable
Not applicable
100 MHz PCI-Express
100 MHz PCI-Express
100 MHz PCI-Express
100 MHz PCI-Express
Not applicable
output PCIE3
output PCIE2
Not applicable
output PCIE1
output PCIE0
Not applicable
Not applicable
Outputs Affected
Outputs Affected
Outputs Affected
Outputs Affected
Outputs Affected
Spread select for 100 MHz PCI-Express clocks 0 = spread off
Not used
Global OE bit. Enables or disables all outputs. 0 = disabled
Not used
Not used
Not used
Not used
OE for single-ended 25 MHz output, 25M.
Output driven low when disabled.
Not used
Not used
Not used
OE for 100 MHz PCI-Express output PCIE3
OE for 100 MHz PCI-Express output PCIE2
Not used
OE for 100 MHz PCI-Express output PCIE1
OE for 100 MHz PCI-Express output PCIE0
Not used
Not used
Description
Description
Description
Description
Description
0 = disabled
0 = disabled
0 = disabled
0 = disabled
1 = enabled
1 = enabled
1 = enabled
1 = enabled
1 = -0.5% down
1 = enabled
0 = disabled
1 = enabled
CY24292
Page 6 of 16
Notes
Notes
Notes
Notes
Notes
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