gwixp425bdt Intel Corporation, gwixp425bdt Datasheet - Page 126
gwixp425bdt
Manufacturer Part Number
gwixp425bdt
Description
Intel Xp42x Product Line Of Network Processors And Ixc1100 Control Plane Processor
Manufacturer
Intel Corporation
Datasheet
1.GWIXP425BDT.pdf
(134 pages)
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Intel
Table 64.
March 2005
126
®
IXP42X Product Line of Network Processors and IXC1100 Control Plane Processor
High-Speed, Serial Timing Values
For more information on the HSS Jitter Specifications see the Intel
Network Processors and IXC1100 Control Plane Processor Developer’s Manual.
Notes:
1.
2.
3.
4.
5.
6.
Symbol
T1
T2
T3
T4
T5
T6
T7
T8
T9
HSS_TXCLK and HSS_RXCLK may be coming from external independent sources or being driven by
the IXP42X product line and IXC1100 control plane processors. The signals are shown to be
synchronous for illustrative purposes and are not required to be synchronous.
Applicable when the HSS_RXFRAME and HSS_TXFRAME signals are being driven by an external
source as inputs into the IXP42X product line and IXC1100 control plane processors. Always
applicable to HSS_RXDATA.
The HSS_RXFRAME and HSS_TXFRAME can be configured to accept data on the rising or falling
edge of the given reference clock. HSS_RXFRAME and HSS_RXDATA signals are synchronous to
HSS_RXCLK and HSS_TXFRAME and HSS_TXDATA signals are synchronous to the HSS_TXCLK.
Applicable when the HSS_RXFRAME and HSS_TXFRAME signals are being driven by the IXP42X
product line and IXC1100 control plane processors to an external source. Always applicable to
HSS_TXDATA.
The HSS_TXCLK can be configured to be driven by an external source or be driven by the IXP42X
product line and IXC1100 control plane processors. The slowest clock speed that can be accepted or
driven is 512 KHz. The maximum clock speed that can be accepted or driven is 8.192 MHz. The clock
duty cycle accepted will be 50/50 + 20%.
Timing tests were performed with a 70-pF capacitor to ground and a 10-K
pull-up resistor.
Setup time of HSS_TXFRAME, HSS_RXFRAME, and
HSS_RXDATA prior to the rising edge of clock
Hold time of HSS_TXFRAME, HSS_RXFRAME, and
HSS_RXDATA after the rising edge of clock
Setup time of HSS_TXFRAME, HSS_RXFRAME, and
HSS_RXDATA prior to the falling edge of clock
Hold time of HSS_TXFRAME, HSS_RXFRAME, and
HSS_RXDATA after the falling edge of clock
Rising edge of clock to output delay for
HSS_TXFRAME, HSS_RXFRAME, and HSS_TXDATA
Falling edge of clock to output delay for
HSS_TXFRAME, HSS_RXFRAME, and HSS_TXDATA
Output Hold Delay after rising edge of final clock for
HSS_TXFRAME, HSS_RXFRAME, and HSS_TXDATA
Output Hold Delay after falling edge of final clock for
HSS_TXFRAME, HSS_RXFRAME, and HSS_TXDATA
HSS_TXCLK period and HSS_RXCLK period
Document Number: 252479, Revision: 005
Parameter
1/8.192 MHz 1/512 KHz
Min.
5
0
5
0
0
0
®
IXP42X Product Line of
Max.
15
15
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
Datasheet
Notes
1, 2,
1, 2,
1, 2,
1, 2,
1, 3,
1, 3,
1, 3,
1,
5
4
3
3
3
3
4
4
4
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