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DVR 数据表(PDF) 246 Page - Microchip Technology |
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DVR 数据表(HTML) 246 Page - Microchip Technology |
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246 / 416 page  PIC24FJ256GA705 FAMILY DS30010118D-page 246 2016-2018 Microchip Technology Inc. REGISTER 20-5: PMCSxCF: EPMP CHIP SELECT x CONFIGURATION REGISTER R/W-0 R/W-0 R/W-0 R/W-0 U-0 R/W-0 R/W-0 R/W-0 CSDIS CSP CSPTEN BEP — WRSP RDSP SM bit 15 bit 8 R/W-0 R/W-0 R/W-0 U-0 U-0 U-0 U-0 U-0 ACKP PTSZ1 PTSZ0 — — — — — bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’ -n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown bit 15 CSDIS: Chip Select x Disable bit 1 = Disables the Chip Select x functionality 0 = Enables the Chip Select x functionality bit 14 CSP: Chip Select x Polarity bit 1 = Active-high (PMCSx) 0 =Active-low (PMCSx) bit 13 CSPTEN: PMCSx Port Enable bit 1 = PMCSx port is enabled 0 = PMCSx port is disabled bit 12 BEP: Chip Select x Nibble/Byte Enable Polarity bit 1 = Nibble/byte enable is active-high (PMBE0, PMBE1) 0 = Nibble/byte enable is active-low (PMBE0, PMBE1) bit 11 Unimplemented: Read as ‘0’ bit 10 WRSP: Chip Select x Write Strobe Polarity bit For Slave modes and Master mode when SM = 0: 1 = Write strobe is active-high (PMWR) 0 = Write strobe is active-low (PMWR) For Master mode when SM = 1: 1 = Enable strobe is active-high (PMENB) 0 = Enable strobe is active-low (PMENB) bit 9 RDSP: Chip Select x Read Strobe Polarity bit For Slave modes and Master mode when SM = 0: 1 = Read strobe is active-high (PMRD) 0 = Read strobe is active-low (PMRD) For Master mode when SM = 1: 1 = Read/write strobe is active-high (PMRD/PMWR) 0 = Read/write strobe is active-low (PMRD/PMWR) bit 8 SM: Chip Select x Strobe Mode bit 1 = Reads/writes and enables strobes (PMRD/PMWR and PMENB) 0 = Reads and writes strobes (PMRD and PMWR) bit 7 ACKP: Chip Select x Acknowledge Polarity bit 1 = ACK is active-high (PMACK1) 0 = ACK is active-low (PMACK1) bit 6-5 PTSZ<1:0>: Chip Select x Port Size bits 11 =Reserved 10 =Reserved 01 = 4-bit port size (PMD<3:0>) 00 = 8-bit port size (PMD<7:0>) bit 4-0 Unimplemented: Read as ‘0’ |
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