CY28378 Cypress Semiconductor, CY28378 Datasheet - Page 9

• Manufacturer Part Number: CY28378
• Description: FTG for Pentium 4 and Intel 845 Series Chipset
• Manufacturer: Cypress Semiconductor

Document #: 38-07519 Rev. **
Byte 9
Byte 10
Byte 11
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
Bit
Bit
@Pup
@Pup
@Pup
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
48MHz_DRV
PCI_DRV
3V66_DRV
Reserved
Reserved
Reserved
Reserved
Reserved
CPU_Skew2
CPU_Skew1
CPU_Skew0
Fixed 3V66_SEL
PCI_Skew1
PCI_Skew0
3V66_Skew1
3V66_Skew0
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Name
Name
Name
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
Reserved
Reserved
Reserved
Reserved
Reserved
CPU 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
3V66 and PCI output frequency select mode
PCI skew control
00 = Normal
01 = –500 ps
10 = Reserved
11 = +500 ps
3V66 skew control
00 = Normal
01 = –150 ps
10 = +150 ps
11 = +300 ps
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
0 = Set according to Frequency Selection Table
1 = Set according to Fractional Aligner settings
Pin Description
Pin Description
Pin Description
CY28378
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