參數(shù)資料
型號: MPC8378VRANGA
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 32-BIT, 400 MHz, MICROPROCESSOR, PBGA689
封裝: 31 X 31 MM, 2.46 MM HEIGHT, 1 MM PITCH, LEAD FREE, PLASTIC, BGA-689
文件頁數(shù): 52/125頁
文件大?。?/td> 894K
代理商: MPC8378VRANGA
MPC8378E PowerQUICC II Pro Processor Hardware Specifications, Rev. 5
Freescale Semiconductor
32
This figure provides the AC test load for eTSEC.
Figure 12. eTSEC AC Test Load
This figure shows the MII receive AC timing diagram.
Figure 13. MII Receive AC Timing Diagram
RX_CLK clock period 100 Mbps
tMRX
—40—
ns
RX_CLK duty cycle
tMRXH/tMRX
35
65
%
RXD[3:0], RX_DV, RX_ER setup time to RX_CLK
tMRDVKH
10.0
ns
RXD[3:0], RX_DV, RX_ER hold time to RX_CLK
tMRDXKH
10.0
ns
RX_CLK clock rise time (20%–80%)
tMRXR
1.0
4.0
ns
RX_CLK clock fall time (80%–20%)
tMRXF
1.0
4.0
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, tMRDVKH symbolizes MII
receive timing (MR) with respect to the time data input signals (D) reach the valid state (V) relative to the tMRX clock reference
(K) going to the high (H) state or setup time. Also, tMRDXKL symbolizes MII receive timing (GR) with respect to the time data
input signals (D) went invalid (X) relative to the tMRX clock reference (K) going to the low (L) state 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 tMRX represents the MII (M) receive (RX) clock. For rise and fall times, the latter convention is
used with the appropriate letter: R (rise) or F (fall).
Table 32. MII Receive AC Timing Specifications (continued)
At recommended operating conditions with LVDD of 3.3 V ± 5%.
Parameter
Symbol1
Min
Typical
Max
Unit
Output
Z0 = 50
LVDD/2
RL = 50
RX_CLK
RXD[3:0]
tMRDXKL
tMRX
tMRXH
tMRXR
tMRXF
RX_DV
RX_ER
tMRDVKH
Valid Data
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