參數(shù)資料
型號: MPC8548EPXAVHB
廠商: Freescale Semiconductor
文件頁數(shù): 81/151頁
文件大?。?/td> 0K
描述: MPU POWERQUICC III 783-PBGA
產品培訓模塊: MPC8548 PowerQUICC III Processors
標準包裝: 1
系列: MPC85xx
處理器類型: 32-位 MPC85xx PowerQUICC III
速度: 1.5GHz
電壓: 1.1V
安裝類型: 表面貼裝
封裝/外殼: 783-BBGA,F(xiàn)CBGA
供應商設備封裝: 783-FCPBGA(29x29)
包裝: 托盤
MPC8548E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 9
Freescale Semiconductor
35
Enhanced Three-Speed Ethernet (eTSEC)
Figure 14 shows the TBI transmit AC timing diagram.
Figure 14. TBI Transmit AC Timing Diagram
8.2.4.2
TBI Receive AC Timing Specifications
This table provides the TBI receive AC timing specifications.
Table 31. TBI Receive AC Timing Specifications
Parameter/Condition
Symbol1
Min
Typ
Max
Unit
TSECn_RX_CLK[0:1] clock period
tTRX
16.0
ns
TSECn_RX_CLK[0:1] skew
tSKTRX
7.5
8.5
ns
TSECn_RX_CLK[0:1] duty cycle
tTRXH/tTRX
40
60
%
RCG[9:0] setup time to rising TSECn_RX_CLK
tTRDVKH
2.5
ns
RCG[9:0] hold time to rising TSECn_RX_CLK
tTRDXKH
1.5
ns
TSECn_RX_CLK[0:1] clock rise time (20%–80%)
tTRXR
2
0.7
2.4
ns
TSECn_RX_CLK[0:1] clock fall time (80%–20%)
tTRXF
2
0.7
2.4
ns
Notes:
1. The symbols used for timing specifications follow the pattern of t(first two letters of functional block)(signal)(state)(reference)(state) for
inputs and t(first two letters of functional block)(reference)(state)(signal)(state) for outputs. For example, tTRDVKH symbolizes TBI receive
timing (TR) with respect to the time data input signals (D) reach the valid state (V) relative to the tTRX clock reference (K)
going to the high (H) state or setup time. Also, tTRDXKH symbolizes TBI receive timing (TR) with respect to the time data input
signals (D) went invalid (X) relative to the tTRX clock reference (K) going to the high (H) state. Note that, in general, the clock
reference symbol representation is based on three letters representing the clock of a particular functional. For example, the
subscript of tTRX represents the TBI (T) receive (RX) clock. For rise and fall times, the latter convention is used with the
appropriate letter: R (rise) or F (fall). For symbols representing skews, the subscript is skew (SK) followed by the clock that
is being skewed (TRX).
2. Guaranteed by design.
GTX_CLK
TCG[9:0]
tTTXR
tTTX
tTTXH
tTTXR
tTTXF
tTTKHDV
tTTKHDX
tTTXF
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