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DSPIC33FJMC202ESS 数据表(PDF) 175 Page - Microchip Technology |
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DSPIC33FJMC202ESS 数据表(HTML) 175 Page - Microchip Technology |
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175 / 330 page  © 2007-2012 Microchip Technology Inc. DS70283K-page 175 dsPIC33FJ32MC202/204 and dsPIC33FJ16MC304 REGISTER 16-1: QEIxCON: QEI CONTROL REGISTER R/W-0 U-0 R/W-0 R-0 R/W-0 R/W-0 R/W-0 R/W-0 CNTERR — QEISIDL INDEX UPDN QEIM<2:0> 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 SWPAB PCDOUT TQGATE TQCKPS<1:0> POSRES TQCS UPDN_SRC 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 CNTERR: Count Error Status Flag bit 1 = Position count error has occurred 0 = No position count error has occurred Note: CNTERR flag only applies when QEIM<2:0> = ‘110’ or ‘100’. bit 14 Unimplemented: Read as ‘0’ bit 13 QEISIDL: Stop in Idle Mode bit 1 = Discontinue module operation when device enters Idle mode 0 = Continue module operation in Idle mode bit 12 INDEX: Index Pin State Status bit (Read-Only) 1 = Index pin is High 0 = Index pin is Low bit 11 UPDN: Position Counter Direction Status bit 1 = Position Counter Direction is positive (+) 0 = Position Counter Direction is negative (-) (Read-only bit when QEIM<2:0> = ‘1XX’) (Read/Write bit when QEIM<2:0> = ‘001’) bit 10-8 QEIM<2:0>: Quadrature Encoder Interface Mode Select bits 111 = Quadrature Encoder Interface enabled (x4 mode) with position counter reset by match (MAXCNT) 110 = Quadrature Encoder Interface enabled (x4 mode) with Index Pulse reset of position counter 101 = Quadrature Encoder Interface enabled (x2 mode) with position counter reset by match (MAXCNT) 100 = Quadrature Encoder Interface enabled (x2 mode) with Index Pulse reset of position counter 011 = Unused (Module disabled) 010 = Unused (Module disabled) 001 = Starts 16-bit Timer 000 = Quadrature Encoder Interface/Timer off bit 7 SWPAB: Phase A and Phase B Input Swap Select bit 1 = Phase A and Phase B inputs swapped 0 = Phase A and Phase B inputs not swapped bit 6 PCDOUT: Position Counter Direction State Output Enable bit 1 = Position Counter Direction Status Output Enable (QEI logic controls state of I/O pin) 0 = Position Counter Direction Status Output Disabled (Normal I/O pin operation) bit 5 TQGATE: Timer Gated Time Accumulation Enable bit 1 = Timer gated time accumulation enabled 0 = Timer gated time accumulation disabled |
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