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SPC5668EF1AVMG Datasheet(PDF) 55 Page - Freescale Semiconductor, Inc |
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SPC5668EF1AVMG Datasheet(HTML) 55 Page - Freescale Semiconductor, Inc |
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55 / 66 page  Electrical Characteristics MPC5668x Microcontroller Data Sheet, Rev. 6 Freescale Semiconductor 55 4.14.7 MLB Interface 4.14.7.1 Media Local Bus DC Electrical Characteristics Table 30 provides the DC electrical characteristics for the Media Local Bus interface. Table 30. Media Local Bus DC Electrical Characteristics 4.14.7.2 Media Local Bus (MLB) AC Electrical Characteristics Table 31 and Table 32 provide the AC electrical characteristics for the Media Local Bus interface. Parameter Symbol Min Typ Max Unit Comments Maximum Input Voltage — — — 3.6 V Low Level Input Threshold VIL —— 0.7 V High Level Input Threshold VIH 1.81 1 Higher V IH thresholds can be used; however, the risks associated with less noise margin in the system must be evaluated and assumed by the customer. —— V Low Level Output Threshold VOL —— 0.4 V IOL =6mA High Level Output Threshold VOH 2.0 — — V IOH =–6mA Input Leakage Current IL —— ±1 µA 0 < Vin <VDDE4 Table 31. MLB Timing for MLB Speed 256 Fs or 512 Fs Spec Parameter Symbol Min Typ Max Unit Comments 1 MLBCLK Operating Frequency1 fmck 11.264 — — — — 12.288 24.576 — — — — — 24.6272 25.600 MHz 256 Fs at 44.0 kHz 256 Fs at 48.0 kHz 512 Fs at 48.0 kHz 512 Fs at 48.1 kHz 512 Fs PLL unlocked 2 MLBCLK rise time tmckr —— 3 ns VIL to VIH 3 MLBCLK fall time tmckf —— 3 ns VIH to VIL 4 MLBCLK cycle time tmckc —81 40 —ns 256 Fs 512 Fs 5 MLBCLK low time tmckl 31.5 30 37 35.5 —ns 256 Fs 256 Fs PLL unlocked 14.5 14 17 16.5 —ns 512 Fs 512 Fs PLL unlocked 6 MLBCLK high time tmckh 31.5 30 38 36.5 — ns 256xFs 256 Fs PLL unlocked 14.5 14 17 16.5 —ns 512 Fs 512 Fs PLL unlocked 7 MLBCLK pulse width variation2 tmpwv — — 2 ns p-p 8 MLBSIG/MLBDAT input valid to MLBCLK falling tdsmcf 1— — ns 9 MLBSIG/MLBDAT input hold from MLBCLK low tdhmcf 0— — ns |
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