参数资料
型号: MPC8572PXAULB
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 32-BIT, 1333 MHz, MICROPROCESSOR, PBGA1023
封装: 33 X 33 MM, PLASTIC, FCBGA-1023
文件页数: 72/138页
文件大小: 1502K
代理商: MPC8572PXAULB
MPC8572E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 2
Freescale Semiconductor
39
Ethernet: Enhanced Three-Speed Ethernet (eTSEC)
Figure 16 shows the TBI receive AC timing diagram.
Figure 16. TBI Receive AC Timing Diagram
8.2.5
TBI Single-Clock Mode AC Specifications
When the eTSEC is configured for TBI modes, all clocks are supplied from external sources to the relevant
eTSEC interface. In single-clock TBI mode, when a 125-MHz TBI receive clock is supplied on TSECn
pin (no receive clock is used in this mode, whereas for the dual-clock mode this is the PMA1 receive
clock). The 125-MHz transmit clock is applied in all TBI modes.
A summary of the single-clock TBI mode AC specifications for receive appears in Table 32.
Table 32. TBI single-clock Mode Receive AC Timing Specification
At recommended operating conditions with LVDD/TVDD of 2.5/ 3.3 V ± 5%.
Parameter/Condition
Symbol
Min
Typ
Max
Unit
RX_CLK clock period
tTRRX
7.5
8.0
8.5
ns
RX_CLK duty cycle
tTRRH/tTRRX
40
50
60
%
RX_CLK peak-to-peak jitter
tTRRJ
250
ps
Rise time RX_CLK (20%–80%)
tTRRR
——
1.0
ns
Fall time RX_CLK (80%–20%)
tTRRF
——
1.0
ns
RCG[9:0] setup time to RX_CLK rising edge
tTRRDVKH
2.0
——ns
RCG[9:0] hold time to RX_CLK rising edge
tTRRDXKH
1.0
——ns
TBI Receive Clock 1
RCG[9:0]
tTRX
tTRXH
tTRXR
tTRXF
tTRDVKH
TBI Receive Clock 0
tTRDXKH
tTRDVKH
tTRDXKH
tSKTRX
tTRXH
Valid Data
(TSEC
n_TX_CLK)
(TSEC
n_RX_CLK)
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