參數(shù)資料
型號: MC8641HX1333KC
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: MICROPROCESSOR, CBGA1023
封裝: 33 X 33 MM, CERAMIC, BGA-1023
文件頁數(shù): 71/140頁
文件大?。?/td> 1484K
代理商: MC8641HX1333KC
MPC8641 and MPC8641D Integrated Host Processor Hardware Specifications, Rev. 0
36
Freescale Semiconductor
Ethernet: Enhanced Three-Speed Ethernet (eTSEC), MII Management
Figure 15 shows the MII receive AC timing diagram.
Figure 15. MII Receive AC Timing Diagram
8.2.4
TBI AC Timing Specifications
This section describes the TBI transmit and receive AC timing specifications.
8.2.4.1
TBI Transmit AC Timing Specifications
Table 32 provides the TBI transmit AC timing specifications.
Table 32. TBI Transmit AC Timing Specifications
At recommended operating conditions with L/TVDD of 3.3 V ± 5% and 2.5 V ± 5%.
Parameter/Condition
Symbol 1
Min
Typ
Max
Unit
TCG[9:0] setup time GTX_CLK going high
tTTKHDV
2.0
ns
TCG[9:0] hold time from GTX_CLK going high
tTTKHDX
1.0
ns
GTX_CLK rise time (20%–80%)
tTTXR
2
——
1.0
ns
GTX_CLK fall time (80%–20%)
tTTXF
2
——
1.0
ns
Notes:
1. The symbols used for timing specifications herein 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,
tTTKHDV symbolizes the TBI transmit timing (TT) with respect to the time from tTTX (K) going high (H) until the
referenced data signals (D) reach the valid state (V) or setup time. Also, tTTKHDX symbolizes the TBI transmit timing
(TT) with respect to the time from tTTX (K) going high (H) until the referenced data signals (D) reach the invalid state
(X) or hold time. 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 tTTX represents the TBI (T) transmit
(TX) clock. For rise and fall times, the latter convention is used with the appropriate letter: R (rise) or F (fall).
2. Guaranteed by design.
RX_CLK
RXD[3:0]
tMRDXKL
tMRX
tMRXH
tMRXR
tMRXF
RX_DV
RX_ER
tMRDVKH
Valid Data
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