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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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MC68340 датащи(PDF) 78 Page - Freescale Semiconductor, Inc |
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MC68340 датащи(HTML) 78 Page - Freescale Semiconductor, Inc |
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78 / 441 page  MOTOROLA MC68340 USER’S MANUAL 3- 29 CLKOUT A31–A4 FC3–FC0 S0 S2 S4 S2 S4 S0 SIZ0 DSACKx D7–D0 R/W AS DS A3–A1 A0 SIZ1 D15–D8 S0 S1 S2 IRQ7–IRQ1 1 BYTE INTERRUPT LEVEL READ CYCLE INTERNAL ARBITRATION IACK CYCLE IACK7–IACK1 WRITE STACK VECTOR FROM 16-BIT PORT VECTOR FROM 8-BIT PORT CPU SPACE 0–2 CLOCKS* *Internal Arbitration may take between 0–2 clock cycles. Figure 3-15. Interrupt Acknowledge Cycle Timing 3.4.4.2 AUTOVECTOR INTERRUPT ACKNOWLEDGE CYCLE. When the interrupting device cannot supply a vector number, it requests an automatically generated vector (autovector). Instead of placing a vector number on the data bus and asserting DSACK ≈, the device asserts AVEC to terminate the cycle. If the DSACK ≈ signals are asserted during an interrupt acknowledge cycle terminated by AVEC, the DSACK ≈ signals and Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com |
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