cy28800 Cypress Semiconductor Corporation., cy28800 Datasheet - Page 4

• Manufacturer Part Number: cy28800
• Description: 100-mhz Differential Buffer For Pci Express And Sata
• Manufacturer: Cypress Semiconductor Corporation.

Document #: 38-07723 Rev *B
Byte 0: Control Register 0
Byte 1: Control Register 1
Byte 2: Control Register 2
Bit
Bit
Bit
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
7
6
5
@pup
@pup
@pup
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
0
0
0
PWRDWN Drive Mode
SRC_STP Drive Mode
Reserved
Reserved
Reserved
HIGH_BW#
PLL/BYPASS#
SRC_DIV2#
OE_7
OE_6
OE_5
OE_4
OE_3
OE_2
OE_1
OE_0
SRC_STP_DIF[T/C]7
SRC_STP_DIF[T/C]6
SRC_STP_DIF[T/C]5
Name
Name
Name
Power Down drive mode
0 = Driven when stopped, 1 = Tri-state
SRC Stop drive mode
0 = Driven when stopped, 1 = Tri-state
Reserved
Reserved
Reserved
HIGH_BW#
0 = High Bandwidth, 1 = Low bandwidth
PLL/BYPASS#
0 = Fanout buffer, 1 = PLL mode
SRC_DIV2# configures output frequency at half the input frequency
0 = Divided by 2 mode (output = input/2),1 = Normal (output = input)
DIF[T/C]7 Output Enable
0 = Disabled (Tri-state)
1 = Enabled
DIF[T/C]6 Output Enable
0 = Disabled (Tri-state)
1 = Enabled
DIF[T/C]5 Output Enable
0 = Disabled (Tri-state)
1 = Enabled
DIF[T/C]4 Output Enable
0 = Disabled (Tri-state)
1 = Enabled
DIF[T/C]3 Output Enable
0 = Disabled (Tri-state)
1 = Enabled
DIF[T/C]2 Output Enable
0 = Disabled (Tri-state)
1 = Enabled
DIF[T/C]1 Output Enable
0 = Disabled (Tri-state)
1 = Enabled
DIF[T/C]0 Output Enable
0 = Disabled (Tri-state)
1 = Enabled
Allow Control DIF[T/C]7 with assertion of SRC_STP
0 = Free-running
1 = Stopped with SRC_STP
Allow Control DIF[T/C]6 with assertion of SRC_STP
0 = Free-running
1 = Stopped with SRC_STP
Allow Control DIF[T/C]5 with assertion of SRC_STP
0 = Free-running
1 = Stopped with SRC_STP
Description
Description
Description
CY28800
Page 4 of 16
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