參數(shù)資料
型號(hào): MPC8343ECZQAGDX
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, PBGA620
封裝: 29 X 29 MM, 2.46 MM HEIGHT, 1 MM PITCH, PLASTIC, BGA-620
文件頁(yè)數(shù): 21/92頁(yè)
文件大?。?/td> 987K
代理商: MPC8343ECZQAGDX
MPC8343E PowerQUICC II Pro Integrated Host Processor Hardware Specifications, Rev. 6
28
Freescale Semiconductor
7.3.2
MII Management AC Electrical Specifications
Table 23 provides the MII management AC timing specifications.
Figure 9 shows the MII management AC timing diagram.
Figure 9. MII Management Interface Timing Diagram
Table 23. MII Management AC Timing Specifications
At recommended operating conditions with LVDD is 3.3 V ± 10% or 2.5 V ± 5%
Parameter/Condition
Symbol 1
Min
Typ
Max
Unit
Notes
MDC frequency
fMDC
—2.5
MHz
2
MDC period
tMDC
—400
ns
MDC clock pulse width high
tMDCH
32
ns
MDC to MDIO delay
tMDKHDX
10
70
ns
3
MDIO to MDC setup time
tMDDVKH
5—
ns
MDIO to MDC hold time
tMDDXKH
0—
ns
MDC rise time
tMDCR
10
ns
MDC fall time
tMDHF
10
ns
Notes:
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,
tMDKHDX symbolizes management data timing (MD) for the time tMDC from clock reference (K) high (H) until data
outputs (D) are invalid (X) or data hold time. Also, tMDDVKH symbolizes management data timing (MD) with respect
to the time data input signals (D) reach the valid state (V) relative to the tMDC clock reference (K) going to the high
(H) state or setup time. For rise and fall times, the latter convention is used with the appropriate letter: R (rise) or F
(fall).
2. This parameter is dependent on the csb_clk speed (that is, for a csb_clk of 267 MHz, the maximum frequency is
8.3 MHz and the minimum frequency is 1.2 MHz; for a csb_clk of 375 MHz, the maximum frequency is 11.7 MHz
and the minimum frequency is 1.7 MHz).
3. This parameter is dependent on the csb_clk speed (that is, for a csb_clk of 267 MHz, the delay is 70 ns and for a
csb_clk of 333 MHz, the delay is 58 ns).
MDC
tMDDXKH
tMDC
tMDCH
tMDCR
tMDCF
tMDDVKH
tMDKHDX
MDIO
(Input)
(Output)
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