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DSPIC33FJ12MC02ESS 数据表(PDF) 18 Page - Microchip Technology |
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DSPIC33FJ12MC02ESS 数据表(HTML) 18 Page - Microchip Technology |
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18 / 284 page  dsPIC33FJ12MC201/202 DS70265B-page 16 Preliminary © 2007 Microchip Technology Inc. REGISTER 2-2: CORCON: CORE CONTROL REGISTER U-0 U-0 U-0 R/W-0 R/W-0 R-0 R-0 R-0 — — —US EDT(1) DL<2:0> bit 15 bit 8 R/W-0 R/W-0 R/W-1 R/W-0 R/C-0 R/W-0 R/W-0 R/W-0 SATA SATB SATDW ACCSAT IPL3(2) PSV RND IF bit 7 bit 0 Legend: C = Clear only bit R = Readable bit W = Writable bit -n = Value at POR ‘1’ = Bit is set 0’ = Bit is cleared ‘x = Bit is unknown U = Unimplemented bit, read as ‘0’ bit 15-13 Unimplemented: Read as ‘0’ bit 12 US: DSP Multiply Unsigned/Signed Control bit 1 = DSP engine multiplies are unsigned 0 = DSP engine multiplies are signed bit 11 EDT: Early DO Loop Termination Control bit(1) 1 = Terminate executing DO loop at end of current loop iteration 0 = No effect bit 10-8 DL<2:0>: DO Loop Nesting Level Status bits 111 = 7 DO loops active • • • 001 = 1 DO loop active 000 = 0 DO loops active bit 7 SATA: ACCA Saturation Enable bit 1 = Accumulator A saturation enabled 0 = Accumulator A saturation disabled bit 6 SATB: ACCB Saturation Enable bit 1 = Accumulator B saturation enabled 0 = Accumulator B saturation disabled bit 5 SATDW: Data Space Write from DSP Engine Saturation Enable bit 1 = Data space write saturation enabled 0 = Data space write saturation disabled bit 4 ACCSAT: Accumulator Saturation Mode Select bit 1 = 9.31 saturation (super saturation) 0 = 1.31 saturation (normal saturation) bit 3 IPL3: CPU Interrupt Priority Level Status bit 3(2) 1 = CPU interrupt priority level is greater than 7 0 = CPU interrupt priority level is 7 or less bit 2 PSV: Program Space Visibility in Data Space Enable bit 1 = Program space visible in data space 0 = Program space not visible in data space Note 1: This bit will always read as ‘0’. 2: The IPL3 bit is concatenated with the IPL<2:0> bits (SR<7:5>) to form the CPU interrupt priority level. |
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