參數(shù)資料
型號(hào): KMPC8315ECVRAGDA
廠商: Freescale Semiconductor
文件頁(yè)數(shù): 26/106頁(yè)
文件大小: 0K
描述: IC MPU POWERQUICC II 620-PBGA
標(biāo)準(zhǔn)包裝: 2
系列: MPC83xx
處理器類型: 32-位 MPC83xx PowerQUICC II Pro
速度: 400MHz
電壓: 1V
安裝類型: 表面貼裝
封裝/外殼: 620-BBGA 裸露焊盤(pán)
供應(yīng)商設(shè)備封裝: 620-PBGA(29x29)
包裝: 托盤(pán)
MPC8315E PowerQUICC II Pro Processor Hardware Specifications, Rev. 2
26
Freescale Semiconductor
Ethernet: Three-Speed Ethernet, MII Management
9.2
MII, RMII, RGMII, and RTBI AC Timing Specifications
The AC timing specifications for MII, RMII, RGMII, and RTBI are presented in this section.
9.2.1
MII AC Timing Specifications
This section describes the MII transmit and receive AC timing specifications.
9.2.1.1
MII Transmit AC Timing Specifications
This table provides the MII transmit AC timing specifications.
This figure shows the MII transmit AC timing diagram.
Figure 10. MII Transmit AC Timing Diagram
Note:
1. The symbol VIN, in this case, represents the LVIN symbol referenced in Table 1 and Table 2.
Table 25. MII Transmit AC Timing Specifications
At recommended operating conditions with LVDD of 3.3 V ± 300 mv.
Parameter/Condition
Symbol 1
Min
Typ
Max
Unit
TX_CLK clock period 10 Mbps
tMTX
—400
ns
TX_CLK clock period 100 Mbps
tMTX
—40—
ns
TX_CLK duty cycle
tMTXH/tMTX
35
65
%
TX_CLK to MII data TXD[3:0], TX_ER, TX_EN delay
tMTKHDX
1
5
15
ns
TX_CLK data clock rise VIL(min) to VIH(max)
tMTXR
1.0
4.0
ns
TX_CLK data clock fall VIH(max) to VIL(min)
tMTXF
1.0
4.0
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, tMTKHDX symbolizes MII transmit
timing (MT) for the time tMTX clock reference (K) going high (H) until data outputs (D) are invalid (X). Note that, in general,
the clock reference symbol representation is based on two to three letters representing the clock of a particular functional.
For example, the subscript of tMTX represents the MII(M) transmit (TX) clock. For rise and fall times, the latter convention is
used with the appropriate letter: R (rise) or F (fall).
Table 24. RGMII/RTBI (When Operating at 2.5 V) DC Electrical Characteristics (continued)
Parameters
Symbol
Conditions
Min
Max
Unit
TX_CLK
TXD[3:0]
tMTKHDX
tMTX
tMTXH
tMTXR
tMTXF
TX_EN
TX_ER
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