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DSP56857 bảng dữ liệu(PDF) 644 Page - Freescale Semiconductor, Inc |
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DSP56857 bảng dữ liệu(HTML) 644 Page - Freescale Semiconductor, Inc |
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644 / 662 page ![]() Application: Date: Programmer: Sheet Appendix B - Programmer’s Sheets, Rev. 4 Freescale Semiconductor B-142 Preliminary HI8 HI8 Command Vector Register (CVR) Bits Name Description 7HC Host Command This bit is used by the host processor to handshake the execution of Host Command interrupts. Normally, the host processor sets HC = 1 to request the Host Command interrupt from the core. Setting the HC bit causes Host Command pending to be set in the Host Status Register. 6 - 0 HV CVR Host Vector These seven bits select the Host Command interrupt offset address in the vector table to be used by the Host Command interrupt logic. When the Host Command interrupt is recognized by the DSC interrupt control logic the offset address of the interrupt vector table taken is 2 × HVI0, 6. The Host can write HC and HV in the same write cycle. 6 of 10 HI8 Command Vector Register (CVR) $1FFFD8 + $1 Bits 7 6 5 4 3 2 1 0 Read HC HV6 HV5 HV4 HV3 HV2 HV1 HV0 Write Reset 00 000 0 0 0 |
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