參數(shù)資料
型號: MC8641DVU1250HC
廠商: Freescale Semiconductor
文件頁數(shù): 68/130頁
文件大?。?/td> 0K
描述: IC MPU DUAL E600 CORE 1023FCCBGA
標準包裝: 1
系列: MPC86xx
處理器類型: 32-位 MPC86xx PowerPC
速度: 1.25GHz
電壓: 1.05V
安裝類型: 表面貼裝
封裝/外殼: 1023-BCBGA,F(xiàn)CCBGA
供應(yīng)商設(shè)備封裝: 1023-FCCBGA(33x33)
包裝: 托盤
MPC8641 and MPC8641D Integrated Host Processor Hardware Specifications, Rev. 2
42
Freescale Semiconductor
Ethernet: Enhanced Three-Speed Ethernet (eTSEC), MII Management
8.2.7.2
RMII Receive AC Timing Specifications
Figure 21 provides the AC test load for eTSEC.
Figure 21. eTSEC AC Test Load
Figure 22 shows the RMII receive AC timing diagram.
Figure 22. RMII Receive AC Timing Diagram
Table 37. RMII Receive AC Timing Specifications
At recommended operating conditions with L/TVDD of 3.3 V ± 5%.
Parameter/Condition
Symbol 1
Min
Typ
Max
Unit
REF_CLK clock period
tRMR
15.0
20.0
25.0
ns
REF_CLK duty cycle
tRMRH/tRMR
35
50
65
%
REF_CLK peak-to-peak jitter
tRMRJ
250
ps
Rise time REF_CLK (20%–80%)
tRMRR
1.0
2.0
ns
Fall time REF_CLK (80%–20%)
tRMRF
1.0
2.0
ns
RXD[1:0], CRS_DV, RX_ER setup time to REF_CLK rising
edge
tRMRDV
4.0
ns
RXD[1:0], CRS_DV, RX_ER hold time to REF_CLK rising
edge
tRMRDX
2.0
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).
Output
Z0 = 50 Ω
LVDD/2
RL = 50 Ω
REF_CLK
RXD[1:0]
tRMRDX
tRMR
tRMRH
tRMRR
tRMRF
CRS_DV
RX_ER
tRMRDV
Valid Data
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MC8641DVU1250HB IC MPU DUAL E600 CORE 1023FCCBGA
345-010-542-801 CARDEDGE 10POS DUAL .100 GREEN
345-010-542-204 CARDEDGE 10POS DUAL .100 GREEN
345-010-542-202 CARDEDGE 10POS DUAL .100 GREEN
2-84982-0 CONN FFC 20POS 1.00MM VERT SMD
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