CY28301 Cypress Semiconductor, CY28301 Datasheet - Page 7

• Manufacturer Part Number: CY28301
• Description: Frequency Generator for Intel Integrated Chipset
• Manufacturer: Cypress Semiconductor

Byte 6: Vendor ID and Revision ID Register (Read-only)
Byte 7: Control Register 7
Byte 8: Reserved Register
Byte 9: Reserved Register
Document #: 38-07011 Rev. *C
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit
Bit
Bit
Bit
PCI_Skew1
PCI_Skew0
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
SDRAM_DRV
PCI_DRV
Reserved
Reserved
Reserved
Reserved
Revision_ID3
Revision_ID2
Revision_ID1
Revision_ID0
Vendor_ID3
Vendor_ID2
Vendor _ID1
Vendor _ID0
Name
Name
Name
Pin#
35
34
35
34
–
–
–
–
Default
Default
Default
0
0
0
0
0
0
0
0
0
0
1
0
0
0
Reserved
24_48MHz_DRV
48MHz_DRV
Reserved
24_48MHz
48 MHz
Reserved
Reserved
0
0
1
1
1
1
1
0
SDRAM clock output drive strength
0 = Normal
1 = High Drive
PCI and AGP clock output drive strength
0 = Normal
1 = High drive
Reserved
Reserved
Reserved
Reserved
Revision ID bit[3]
Revision ID bit[2]
Revision ID bit[1]
Revision ID bit[0]
Bit[3] of Cypress’s Vendor ID. This bit is Read-only.
Bit[2] of Cypress’s Vendor ID. This bit is Read-only.
Bit[1] of Cypress’s Vendor ID. This bit is Read-only.
Bit[0] of Cypress’s Vendor ID. This bit is Read-only.
Name
PCI skew control
00 = Normal
01 = –500 ps
10 = Reserved
11 = +500 ps
Reserved. Write with ‘1’
Reserved. Write with ‘1’
Reserved. Write with ‘1’
Reserved. Write with ‘1’
Reserved. Write with ‘1’
Reserved
Default
0
1
1
0
1
1
0
0
Reserved
0 = Norm, 1 = High drive
0 = Norm, 1 = High drive
Reserved
(Active/Inactive)
(Active/Inactive)
Reserved
Reserved
Pin Description
Pin Description
Pin Description
Pin Description
CY28301
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