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MPC866PCZP100A 数据表(PDF) 55 Page - Freescale Semiconductor, Inc |
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MPC866PCZP100A 数据表(HTML) 55 Page - Freescale Semiconductor, Inc |
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55 / 96 page  MPC866/MPC859 Hardware Specifications, Rev. 2 Freescale Semiconductor 55 CPM Electrical Characteristics 74 L1CLK edge to L1RSYNC, L1TSYNC, invalid (SYNC hold time) 35.00 — ns 75 L1RSYNC, L1TSYNC rise/fall time — 15.00 ns 76 L1RXD valid to L1CLK edge (L1RXD setup time) 17.00 — ns 77 L1CLK edge to L1RXD invalid (L1RXD hold time) 13.00 — ns 78 L1CLK edge to L1ST(1–4) valid 4 10.00 45.00 ns 78A L1SYNC valid to L1ST(1–4) valid 10.00 45.00 ns 79 L1CLK edge to L1ST(1–4) invalid 10.00 45.00 ns 80 L1CLK edge to L1TXD valid 10.00 55.00 ns 80A L1TSYNC valid to L1TXD valid 4 10.00 55.00 ns 81 L1CLK edge to L1TXD high impedance 0.00 42.00 ns 82 L1RCLK, L1TCLK frequency (DSC =1) — 16.00 or SYNCCLK/2 MHz 83 L1RCLK, L1TCLK width low (DSC =1) P + 10 — ns 83a L1RCLK, L1TCLK width high (DSC = 1)3 P + 10 — ns 84 L1CLK edge to L1CLKO valid (DSC = 1) — 30.00 ns 85 L1RQ valid before falling edge of L1TSYNC4 1.00 — L1TCLK 86 L1GR setup time2 42.00 — ns 87 L1GR hold time 42.00 — ns 88 L1CLK edge to L1SYNC valid (FSD = 00) CNT = 0000, BYT = 0, DSC = 0) —0.00 ns 1 The ratio SyncCLK/L1RCLK must be greater than 2.5/1. 2 These specs are valid for IDL mode only. 3 Where P = 1/CLKOUT. Thus, for a 25-MHz CLKO1 rate, P = 40 ns. 4 These strobes and TxD on the first bit of the frame become valid after L1CLK edge or L1SYNC, whichever is later. Table 21. SI Timing (continued) Num Characteristic All Frequencies Unit Min Max |
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