参数资料
型号: EWIXP455ABT
厂商: INTEL CORP
元件分类: 微控制器/微处理器
英文描述: 266 MHz, RISC PROCESSOR, PBGA544
封装: LEAD FREE, PLASTIC, BGA-544
文件页数: 67/163页
文件大小: 1123K
代理商: EWIXP455ABT
Electrical Specifications
Intel IXP45X and Intel IXP46X Product Line of Network Processors Datasheet
May 2005
Document Number: 306261-002
159
Table 79.
High-Speed, Serial Timing Values
Symbol
Parameter
Min.
Max.
Units
Notes
T1
Setup time of HSS_TXFRAME, HSS_RXFRAME, and
HSS_RXDATA prior to the rising edge of clock
5ns
T2
Hold time of HSS_TXFRAME, HSS_RXFRAME, and
HSS_RXDATA after the rising edge of clock
0ns
T3
Setup time of HSS_TXFRAME, HSS_RXFRAME, and
HSS_RXDATA prior to the falling edge of clock
5ns
T4
Hold time of HSS_TXFRAME, HSS_RXFRAME, and
HSS_RXDATA after the falling edge of clock
0ns
T5
Rising edge of clock to output delay for HSS_TXFRAME,
HSS_RXFRAME, and HSS_TXDATA
15
ns
T6
Falling edge of clock to output delay for HSS_TXFRAME,
HSS_RXFRAME, and HSS_TXDATA
15
ns
T7
Output Hold Delay after rising edge of final clock for
HSS_TXFRAME, HSS_RXFRAME, and HSS_TXDATA
0ns
T8
Output Hold Delay after falling edge of final clock for
HSS_TXFRAME, HSS_RXFRAME, and HSS_TXDATA
0ns
T9
HSS_TXCLK period and HSS_RXCLK period
1/8.192 MHz 1/512 KHz
ns
NOTES:
1. HSS_TXCLK and HSS_RXCLK may be coming from external independent sources or being driven by the
IXP45X/IXP46X network processors. The signals are shown to be synchronous for illustrative purposes and are
not required to be synchronous.
2. Applicable when the HSS_RXFRAME and HSS_TXFRAME signals are being driven by an external source as
inputs into the IXP45X/IXP46X network processors. Always applicable to HSS_RXDATA.
3. 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.
4. Applicable when the HSS_RXFRAME and HSS_TXFRAME signals are being driven by the IXP45X/IXP46X
network processors to an external source. Always applicable to HSS_TXDATA.
5. The HSS_TXCLK can be configured to be driven by an external source or be driven by the IXP45X/IXP46X
network 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%.
6. Timing was designed for a system load between 5 pF and 30 pF for high drive setting
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