參數(shù)資料
型號(hào): MPC8548EHXAUJ
廠商: Freescale Semiconductor
文件頁數(shù): 82/151頁
文件大?。?/td> 0K
描述: IC MPU PWRQUICC III 783-FCCBGA
標(biāo)準(zhǔn)包裝: 1
系列: MPC85xx
處理器類型: 32-位 MPC85xx PowerQUICC III
速度: 1.333GHz
電壓: 1.1V
安裝類型: 表面貼裝
封裝/外殼: 783-BBGA,F(xiàn)CBGA
供應(yīng)商設(shè)備封裝: 783-FCPBGA(29x29)
包裝: 托盤
MPC8548E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 9
36
Freescale Semiconductor
Enhanced Three-Speed Ethernet (eTSEC)
Figure 15 shows the TBI receive AC timing diagram.
Figure 15. 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 TBICON[CLKSEL] = 1, a 125-MHz TBI receive clock
is supplied on the TSECn_RX_CLK pin (no receive clock is used on TSECn_TX_CLK in this mode,
whereas for the dual-clock mode this is the PMA1 receive clock). The 125-MHz transmit clock is applied
on the TSEC_GTX_CLK125 pin 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
Parameter/Condition
Symbol
Min
Typ
Max
Unit
RX_CLK clock period
tTRRX
7.5
8.0
8.5
ns
RX_CLK duty cycle
tTRRH/TRRX
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
TSECn_RX_CLK1
RCG[9:0]
tTRX
tTRXH
tTRXR
tTRXF
tTRDVKH
TSECn_RX_CLK0
tTRDXKH
tTRDVKH
tTRDXKH
tSKTRX
tTRXH
Valid Data
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