CY28400OXC-2T Silicon Laboratories Inc, CY28400OXC-2T Datasheet - Page 9

• Manufacturer Part Number: CY28400OXC-2T
• Description: Clock Buffer PCIe buffer 1in 4out
• Manufacturer: Silicon Laboratories Inc

Specifications of CY28400OXC-2T

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Rev 1.0, November 21, 2006
Output Enable Clarification
OE functionality allows for enabling and disabling individual
outputs. OE_1 and OE_6 are Active HIGH or Active LOW
inputs depending on the strapped value of the OE_INV input.
Disabling the outputs may be implemented in two ways, via
writing a ‘0’ to SMBus register bit corresponding to output of
interest or by deasserting the OE input pin. In both methods,
if SMBus registered bit has been written low or the OE pin is
deasserted or both, the output of interest will be tri-stated. (The
assertion and deassertion of this signal is absolutely
asynchronous.)
DIFC(Free Running
DIFT(Free Running
DIFC(Free Running
DIFC(Free Running
DIFT(Free Running
DIFT(Free Running
DIFC (Stoppable)
DIFT (Stoppable)
DIFC (Stoppable)
DIFC (Stoppable)
DIFT (Stoppable)
DIFT (Stoppable)
SRC_STP
SRC_STP
SRC_STP
PWRDWN
PWRDWN
PWRDWN
Figure 11. SRC_STP = Tri-state, PWRDWN = Tri-state, OE_INV = 1
Figure 10. SRC_STP = Tri-state, PWRDWN = Driven, OE_INV = 1
Figure 9. SRC_STP = Driven, PWRDWN = Driven, OE_INV = 1
Table 6. OE Functionality
OE_INV
0
0
0
0
1
1
1
1
OE (Pin)
0
0
1
1
0
0
1
1
OE (SMBus Bit)
0
1
0
1
0
1
0
1
1 ms
CY28400-2
1 ms
1 ms
Page 9 of 15
DIF[T/C]
Tri-State
Tri-State
Tri-State
Tri-State
Tri-State
Tri-State
Enabled
Enabled