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| 型號(hào)： | MC8641DHX1333JE |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 32-BIT, 166.66 MHz, MICROPROCESSOR, CBGA1023 |
| 封裝： | 33 X 33 MM, CERAMIC, BGA-1023 |
| 文件頁(yè)數(shù)： | 63/130頁(yè) |
| 文件大小： | 1493K |
| 代理商： | MC8641DHX1333JE |
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MPC8641 and MPC8641D Integrated Host Processor Hardware Specifications, Rev. 2
38
Freescale Semiconductor
Ethernet: Enhanced Three-Speed Ethernet (eTSEC), MII Management
8.2.4.2
TBI Receive AC Timing Specifications
Table 33 provides the TBI receive AC timing specifications.
Figure 17 shows the TBI receive AC timing diagram.
Figure 17. TBI Receive AC Timing Diagram
Table 33. TBI Receive 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
PMA_RX_CLK[0:1] clock period
tTRX
3
—
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.
3. ±100 ppm tolerance on PMA_RX_CLK[0:1] frequency
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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