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MPC885ZP80 датащи(PDF) 46 Page - NXP Semiconductors |
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MPC885ZP80 датащи(HTML) 46 Page - NXP Semiconductors |
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46 / 87 page ![]() MPC885/MPC880 PowerQUICC Hardware Specifications, Rev. 7 46 Freescale Semiconductor CPM Electrical Characteristics 12 CPM Electrical Characteristics This section provides the AC and DC electrical specifications for the communications processor module (CPM) of the MPC885/MPC880. 12.1 PIP/PIO AC Electrical Specifications Table 16 provides the PIP/PIO AC timings as shown in Figure 42 through Figure 46. Figure 42. PIP Rx (Interlock Mode) Timing Diagram Table 16. PIP/PIO Timing Num Characteristic All Frequencies Unit Min Max 21 Data-in setup time to STBI low 0 — ns 22 Data-In hold time to STBI high 0 — clk 23 STBI pulse width 1.5 — clk 24 STBO pulse width 1 clk – 5 ns — ns 25 Data-out setup time to STBO low 2 — clk 26 Data-out hold time from STBO high 5 — clk 27 STBI low to STBO low (Rx interlock) — 4.5 clk 28 STBI low to STBO high (Tx interlock) 2 — clk 29 Data-in setup time to clock high 15 — ns 30 Data-in hold time from clock high 7.5 — ns 31 Clock low to data-out valid (CPU writes data, control, or direction) — 25 ns DATA-IN STBI 23 24 22 STBO 27 21 |
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