cy28551-3 Cypress Semiconductor Corporation., cy28551-3 Datasheet - Page 9

• Manufacturer Part Number: cy28551-3
• Description: Universal Clock Generator For Intel, Via And Sis
• Manufacturer: Cypress Semiconductor Corporation.

Document #: 001-05677 Rev. *D
Byte 7: Vendor ID (continued)
Byte 8: Control Register 8
Byte 9: Control Register 9
Byte 10: Control Register 10
Bit
Bit
Bit
Bit
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
0
@Pup
@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
0
Type
Type
Type
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Type
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R
SMSW_Bypass
Vendor ID Bit 0
CR1_PCIEX6
CR1_PCIEX5
CR1_PCIEX4
SMSW_SEL
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
DF3_N8
DF2_N8
DF1_N8
DF1_N7
DF1_N6
DF1_N5
DF1_N4
DF1_N3
DF1_N2
DF1_N1
DF1_N0
Name
Name
Name
Name
Vendor ID Bit 0
RESERVED, Set = 0
PCIEX[T/C]6 CLKREQ#A Control
1 = PCIEX [T/C]6 stoppable by CLKREQ#A pin
0 = Free running
PCIEX[T/C]5 CLKREQ#B Control
1 = PCIEX [T/C]5 stoppable by CLKREQ#B pin
0 = Free running
PCIEX[T/C]4 CLKREQ#B Control
1 = PCIEX [T/C]4 stoppable by CLKREQ#B pin
0 = Free running
RESERVED, Set = 0
RESERVED, Set = 0
RESERVED, Set = 0
RESERVED, Set = 0
The DF3_N[8:0] will be used to configure CPU frequency for Dynamic
Frequency. DOC[1:2] =11
The DF2_N[8:0] will be used to configure CPU frequency for Dynamic
Frequency. DOC[1:2] =10
The DF1_N[8:0] will be used to configure CPU frequency for Dynamic
Frequency. DOC[1:2] =01
RESERVED, Set = 0
RESERVED, Set = 0
Smooth switch Bypass
0: Activate SMSW block
1: Bypass and de-activate SMSW block.
Smooth switch select
0: select CPU_PLL
1: select SRC_PLL.
RESERVED, Set = 0
The DF1_N[8:0] will be used to configure CPU frequency for Dynamic
Frequency. DOC[1:2] =01.
Description
Description
Description
Description
CY28551-3
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