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DVR Datasheet(PDF) 248 Page - Microchip Technology |
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DVR Datasheet(HTML) 248 Page - Microchip Technology |
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248 / 416 page  PIC24FJ256GA705 FAMILY DS30010118D-page 248 2016-2018 Microchip Technology Inc. REGISTER 20-7: PMCSxMD: EPMP CHIP SELECT x MODE REGISTER R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 U-0 U-0 U-0 ACKM1 ACKM0 AMWAIT2 AMWAIT1 AMWAIT0 — — — bit 15 bit 8 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 DWAITB1 DWAITB0 DWAITM3 DWAITM2 DWAITM1 DWAITM0 DWAITE1 DWAITE0 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 15-14 ACKM<1:0>: Chip Select x Acknowledge Mode bits 11 = Reserved 10 = PMACKx is used to determine when a read/write operation is complete 01 = PMACKx is used to determine when a read/write operation is complete with time-out (If DWAITM<3:0> = 0000, the maximum time-out is 255 TCY or else it is DWAITM<3:0> cycles.) 00 = PMACKx is not used bit 13-11 AMWAIT<2:0>: Chip Select x Alternate Master Wait State bits 111 = Wait of ten alternate master cycles ... 001 = Wait of four alternate master cycles 000 = Wait of three alternate master cycles bit 10-8 Unimplemented: Read as ‘0’ bit 7-6 DWAITB<1:0>: Chip Select x Data Setup Before Read/Write Strobe Wait State bits 11 = Wait of 3¼ TCY 10 = Wait of 2¼ TCY 01 = Wait of 1¼ TCY 00 = Wait of ¼ TCY bit 5-2 DWAITM<3:0>: Chip Select x Data Read/Write Strobe Wait State bits For Write Operations: 1111 = Wait of 15½ TCY ... 0001 = Wait of 1½ TCY 0000 = Wait of ½ TCY For Read Operations: 1111 = Wait of 15¾ TCY ... 0001 = Wait of 1¾ TCY 0000 = Wait of ¾ TCY bit 1-0 DWAITE<1:0>: Chip Select x Data Hold After Read/Write Strobe Wait State bits For Write Operations: 11 = Wait of 3¼ TCY 10 = Wait of 2¼ TCY 01 = Wait of 1¼ TCY 00 = Wait of ¼ TCY For Read Operations: 11 = Wait of 3 TCY 10 = Wait of 2 TCY 01 = Wait of 1 TCY 00 = Wait of 0 TCY |
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