参数资料
型号: MPC8349EZUAJF
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 32-BIT, 533 MHz, RISC PROCESSOR, PBGA672
封装: 35 X 35 MM, 1.50 MM HEIGHT, 1 MM PITCH, TBGA-672
文件页数: 38/115页
文件大小: 1228K
代理商: MPC8349EZUAJF
MPC8349E PowerQUICC II Pro Integrated Host Processor Hardware Specifications, Rev. 5
Freescale Semiconductor
29
Ethernet: Three-Speed Ethernet, MII Management
7.2.3.2
TBI Receive AC Timing Specifications
Table 23 provides the TBI receive AC timing specifications.
Figure 11 shows the TBI receive AC timing diagram.
Figure 11. TBI Receive AC Timing Diagram
Table 23. TBI Receive AC Timing Specifications
At recommended operating conditions with LVDD / OVDD of 3.3 V ± 10%.
Parameter/Condition
Symbol 1
Min
Typ
Max
Unit
PMA_RX_CLK clock period
tTRX
16.0
ns
PMA_RX_CLK skew
tSKTRX
7.5
8.5
ns
RX_CLK duty cycle
tTRXH/tTRX
40
60
%
RXD[7:0], RX_DV, RX_ER (RCG[9:0]) setup time to
rising PMA_RX_CLK
tTRDVKH
2
2.5
ns
RXD[7:0], RX_DV, RX_ER (RCG[9:0]) hold time to rising
PMA_RX_CLK
tTRDXKH
2
1.5
ns
RX_CLK clock rise time VIL(min) to VIH(max)
tTRXR
0.7
2.4
ns
RX_CLK clock fall time VIH(max) to VIL(min)
tTRXF
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. Setup and hold time of even numbered RCG are measured from riding edge of PMA_RX_CLK1. Setup and hold
time of odd numbered RCG are measured from riding edge of PMA_RX_CLK0.
PMA_RX_CLK1
RCG[9:0]
tTRX
tTRXH
tTRXR
tTRXF
tTRDVKH
PMA_RX_CLK0
tTRDXKH
tTRDVKH
tTRDXKH
tSKTRX
tTRXH
Even RCG
Odd RCG
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