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Z86017 bảng dữ liệu(PDF) 54 Page - Zilog, Inc. |
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Z86017 bảng dữ liệu(HTML) 54 Page - Zilog, Inc. |
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54 / 138 page ![]() Z86017/Z16017 PCMCIA Interface Solution Product Specification PS012002-1201 Programming Internal Registers 40 Bit 6 CCR0_OVERIDE ATA_DASP is used as a DASP pin. Also see Register 02h. Card Con•guration Register 0 is normally written after Power-On Reset by the PCMCIA host. If Interrupts are allowed by the local processor or EEPROM, then the PCMCIA READY/BSY signal is configured as an interrupt signal only when the Card Configuration Register is written. If the local processor does not require the PCMCIA host to write to CCR0, bit CCR0_OVERIDE can be set to force the internal logic to select the PCMCIA READY/BSY as the Interrupt pin, if interrupts are enabled. This bit is active when set to 1. On Power-On Reset, set this bit to 0, no override selected. PCMCIA host must select interrupts and write to the Card Con•guration Register 0. Bit 7 EN_INPACK Enable PCMCIA Input acknowledge when set to 1. On Power-On Reset, this bit is set to 0. Table 13. Interrupt Enable Register: Address 01h (Continued) Bit Placement Bit Name Description |
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