PIC24HJ64 Datasheet

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PIC24HJ32GP302/304, <strong>PIC24HJ64</strong>GPX02/X04, AND PIC24HJ128GPX02/X04 REGISTER 15-1: SPIxSTAT: SPIx STATUS AND CONTROL REGISTER R/W-0 U-0 R/W-0 U-0 U-0 U-0 U-0 U-0 SPIEN — SPISIDL — — — — — bit 15 bit 8 U-0 R/C-0 U-0 U-0 U-0 U-0 R-0 R-0 — SPIROV — — — — SPITBF SPIRBF bit 7 bit 0 Legend: C = Clearable bit 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 SPIEN: SPIx Enable bit 1 = Enables module and configures SCKx, SDOx, SDIx and SSx as serial port pins 0 = Disables module bit 14 Unimplemented: Read as ‘0’ bit 13 SPISIDL: Stop in Idle Mode bit 1 = Discontinue module operation when device enters Idle mode 0 = Continue module operation in Idle mode bit 12-7 Unimplemented: Read as ‘0’ bit 6 SPIROV: Receive Overflow Flag bit 1 = A new byte/word is completely received and discarded. The user software has not read the previous data in the SPIxBUF register. 0 = No overflow has occurred. bit 5-2 Unimplemented: Read as ‘0’ bit 1 bit 0 SPITBF: SPIx Transmit Buffer Full Status bit 1 = Transmit not yet started, SPIxTXB is full 0 = Transmit started, SPIxTXB is empty Automatically set in hardware when CPU writes SPIxBUF location, loading SPIxTXB Automatically cleared in hardware when SPIx module transfers data from SPIxTXB to SPIxSR SPIRBF: SPIx Receive Buffer Full Status bit 1 = Receive complete, SPIxRXB is full 0 = Receive is not complete, SPIxRXB is empty Automatically set in hardware when SPIx transfers data from SPIxSR to SPIxRXB Automatically cleared in hardware when core reads SPIxBUF location, reading SPIxRXB DS70293B-page 168 Preliminary © 2008 Microchip Technology Inc.
PIC24HJ32GP302/304, <strong>PIC24HJ64</strong>GPX02/X04, AND PIC24HJ128GPX02/X04 REGISTER 15-2: SPIXCON1: SPIx CONTROL REGISTER 1 U-0 U-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 — — — DISSCK DISSDO MODE16 SMP CKE (1) 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 SSEN CKP MSTEN SPRE PPRE 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 15-13 Unimplemented: Read as ‘0’ bit 12 DISSCK: Disable SCKx pin bit (SPI Master modes only) 1 = Internal SPI clock is disabled, pin functions as I/O 0 = Internal SPI clock is enabled bit 11 DISSDO: Disable SDOx pin bit 1 = SDOx pin is not used by module; pin functions as I/O 0 = SDOx pin is controlled by the module bit 10 MODE16: Word/Byte Communication Select bit 1 = Communication is word-wide (16 bits) 0 = Communication is byte-wide (8 bits) bit 9 SMP: SPIx Data Input Sample Phase bit Master mode: 1 = Input data sampled at end of data output time 0 = Input data sampled at middle of data output time Slave mode: SMP must be cleared when SPIx is used in Slave mode. bit 8 CKE: SPIx Clock Edge Select bit (1) 1 = Serial output data changes on transition from active clock state to Idle clock state (see bit 6) 0 = Serial output data changes on transition from Idle clock state to active clock state (see bit 6) bit 7 SSEN: Slave Select Enable bit (Slave mode) 1 = SSx pin used for Slave mode 0 = SSx pin not used by module. Pin controlled by port function. bit 6 CKP: Clock Polarity Select bit 1 = Idle state for clock is a high level; active state is a low level 0 = Idle state for clock is a low level; active state is a high level bit 5 MSTEN: Master Mode Enable bit 1 = Master mode 0 = Slave mode Note 1: The CKE bit is not used in the Framed SPI modes. Program this bit to ‘0’ for the Framed SPI modes (FRMEN = 1). © 2008 Microchip Technology Inc. Preliminary DS70293B-page 169
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PIC24HJ64 Datasheet

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