参数资料
型号: MPC8349ECVVAGFB
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 32-BIT, 400 MHz, MICROPROCESSOR, PBGA672
封装: 35 X 35 MM, 1.46 MM HEIGHT, 1 MM PITCH, LEAD FREE, TBGA-672
文件页数: 20/87页
文件大小: 1037K
代理商: MPC8349ECVVAGFB
MPC8349EA PowerQUICC II Pro Integrated Host Processor Hardware Specifications, Rev. 12
Freescale Semiconductor
27
Ethernet: Three-Speed Ethernet, MII Management
8.2.2.2
MII Receive AC Timing Specifications
Table 28 provides the MII receive AC timing specifications.
Figure 11 provides the AC test load for TSEC.
Figure 11. TSEC AC Test Load
Figure 12 shows the MII receive AC timing diagram.
Figure 12. MII Receive AC Timing Diagram
Table 28. MII Receive AC Timing Specifications
At recommended operating conditions with LVDD/OVDD of 3.3 V ± 10%.
Parameter/Condition
Symbol1
Min
Typ
Max
Unit
RX_CLK clock period 10 Mbps
tMRX
400
ns
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 (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 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. In general, the clock
reference symbol is based on three letters representing the clock of a particular function. 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
OVDD/2
RL = 50 Ω
RX_CLK
RXD[3:0]
tMRDXKH
tMRX
tMRXH
tMRXR
tMRXF
RX_DV
RX_ER
tMRDVKH
Valid Data
相关PDF资料
PDF描述
MPC8349CVVAGFB 32-BIT, 400 MHz, MICROPROCESSOR, PBGA672
MPC8349ECZUALDB 32-BIT, 667 MHz, MICROPROCESSOR, PBGA672
MPC8349CVVALFB 32-BIT, 667 MHz, MICROPROCESSOR, PBGA672
MPC8349VVAGDB 32-BIT, 400 MHz, MICROPROCESSOR, PBGA672
MPC8349EVVAGFB 32-BIT, 400 MHz, MICROPROCESSOR, PBGA672
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