參數(shù)資料
型號: MPC8568E-MDS-PB
廠商: Freescale Semiconductor
文件頁數(shù): 70/139頁
文件大?。?/td> 0K
描述: MOD DEV SYSTEM POWERQUICC III
標準包裝: 1
系列: PowerQUICC III™
類型: MPU
適用于相關產(chǎn)品: MPC8568E
所含物品:
MPC8568E/MPC8567E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 1
36
Freescale Semiconductor
Ethernet Interface and MII Management
8.2.4.2
TBI Receive AC Timing Specifications
Table 32 provides the TBI receive AC timing specifications.
Figure 16 shows the TBI receive AC timing diagram.
Figure 16. TBI Receive AC Timing Diagram
Table 32. TBI Receive AC Timing Specifications
At recommended operating conditions with L/TVDD of 3.3 V ± 5%.
Parameter/Condition
Symbol 1
Min
Typ
Max
Unit
PMA_RX_CLK[0:1] clock period
tTRX
16.0
ns
PMA_RX_CLK[0:1] skew
tSKTRX
7.5
8.5
ns
PMA_RX_CLK[0:1] duty cycle
tTRXH/tTRX
40
60
%
RCG[9:0] setup time to rising PMA_RX_CLK
tTRDVKH
2.5
ns
RCG[9:0] hold time to rising PMA_RX_CLK
tTRDXKH
1.5
ns
PMA_RX_CLK[0:1] clock rise time (20%-80%)
tTRXR
2
0.7
2.4
ns
PMA_RX_CLK[0:1] clock fall time (80%-20%)
tTRXF
2
0.7
2.4
ns
Note:
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,
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.
PMA_RX_CLK1
RCG[9:0]
tTRX
tTRXH
tTRXR
tTRXF
tTRDVKH
PMA_RX_CLK0
tTRDXKH
tTRDVKH
tTRDXKH
tSKTRX
tTRXH
Valid Data
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