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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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MPC8640DEC 데이터시트(PDF) 46 Page - Freescale Semiconductor, Inc |
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MPC8640DEC 데이터시트(HTML) 46 Page - Freescale Semiconductor, Inc |
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46 / 140 page  MPC8640 and MPC8640D Integrated Host Processor Hardware Specifications, Rev. 1 46 Freescale Semiconductor Local Bus Figure 25. Local Bus AC Test Load Figure 26 to Figure 31 show the local bus signals. Figure 26. Local Bus Signals (PLL Enabled) NOTE PLL bypass mode is recommended when LBIU frequency is at or below 83 MHz. When LBIU operates above 83 Mhz, LBIU PLL is recommended to be enabled. Table 41 describes the general timing parameters of the local bus interface at OVDD = 3.3 V with PLL bypassed. Output Z0 = 50 Ω OVDD/2 RL = 50 Ω Output Signals: LA[27:31]/LBCTL/LBCKE/LOE/ LSDA10/LSDWE/LSDRAS/ LSDCAS/LSDDQM[0:3] tLBKHOV1 tLBKHOV2 tLBKHOV3 LSYNC_IN Input Signals: LAD[0:31]/LDP[0:3] Output (Data) Signals: LAD[0:31]/LDP[0:3] Output (Address) Signal: LAD[0:31] LALE tLBIXKH1 tLBIVKH1 tLBIVKH2 tLBIXKH2 tLBKHOX1 tLBKHOZ1 tLBKHOX2 tLBKHOZ2 Input Signal: LGTA tLBOTOT tLBKHOZ2 tLBKHOX2 tLBKHOV4 LUPWAIT |
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