PIC18F23K22-ESLASHML datasheet(284/496 Pages) MICROCHIP

284 / 496 page

PIC18(L)F2X/4XK22

DS41412C-page 284

Preliminary

 2010 Microchip Technology Inc.

16.4.1.5

Synchronous Master Transmission

Set-up:

Initialize the SPBRGHx, SPBRGx register pair

and the BRGH and BRG16 bits to achieve the

desired baud rate (see Section 16.3 “EUSART

Baud Rate Generator (BRG)”).

Set the RXx/DTx and TXx/CKx TRIS controls to

‘1’.

Enable the synchronous master serial port by

setting bits SYNC, SPEN and CSRC. Set the

TRIS bits corresponding to the RXx/DTx and

TXx/CKx I/O pins.

Disable Receive mode by clearing bits SREN

and CREN.

Enable Transmit mode by setting the TXEN bit.

If 9-bit transmission is desired, set the TX9 bit.

If interrupts are desired, set the TXxIE, GIE/

GIEH and PEIE/GIEL interrupt enable bits.

If 9-bit transmission is selected, the ninth bit

should be loaded in the TX9D bit.

Start transmission by loading data to the

TXREGx register.

FIGURE 16-10:

SYNCHRONOUS TRANSMISSION

FIGURE 16-11:

SYNCHRONOUS TRANSMISSION (THROUGH TXEN)

bit 0

bit 1

bit 7

Word 1

bit 2

bit 0

bit 1

bit 7

RXx/DTx

Write to

TXREGx Reg

TXxIF bit

(Interrupt Flag)

TXEN bit

‘1’

Word 2

TRMT bit

Write Word 1

Write Word 2

Note:

Sync Master mode, SPBRGx = 0, continuous transmission of two 8-bit words.

TXx/CKx pin

(SCKP = 0)

(SCKP = 1)

RXx/DTx pin

TXx/CKx pin

Write to

TXREGx reg

TXxIF bit

TRMT bit

bit 0

bit 1

bit 2

bit 6

bit 7

TXEN bit

PIC18F23K22-E/ML Datasheet(PDF) 284 Page - Microchip Technology

PIC18F23K22-E/ML Datasheet(HTML) 284 Page - Microchip Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL