参数资料
型号: MPC8533EVTARJ
厂商: Freescale Semiconductor
文件页数: 43/112页
文件大小: 0K
描述: MPU POWERQUICC 783-PBGA
标准包装: 36
系列: MPC85xx
处理器类型: 32-位 MPC85xx PowerQUICC III
速度: 1.067GHz
电压: 0.95 V ~ 1.05 V
安装类型: 表面贴装
封装/外壳: 783-BBGA,FCBGA
供应商设备封装: 783-FCPBGA(29x29)
包装: 托盘
MPC8533E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 6
36
Freescale Semiconductor
Enhanced Three-Speed Ethernet (eTSEC), MII Management
8.5.5.2
RMII Receive AC Timing Specifications
Table 34 shows the RMII receive AC timing specifications.
Figure 20 provides the AC test load for eTSEC.
Figure 20. eTSEC AC Test Load
Figure 21 shows the RMII receive AC timing diagram.
Figure 21. RMII Receive AC Timing Diagram
Table 34. RMII Receive AC Timing Specifications
At recommended operating conditions with L/TVDD of 3.3 V ± 5%.or 2.5 V ± 5%.
Parameter/Condition
Symbol1
Min
Typ
Max
Unit
Notes
REF_CLK clock period
tRMR
15.0
20.0
25.0
ns
REF_CLK duty cycle
tRMRH
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 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
LVDD/2
RL = 50
REF_CLK
RXD[1:0]
tRMRDX
tRMR
tRMRH
tRMRR
tRMRF
CRS_DV
RX_ER
tRMRDV
Valid Data
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