PIC16F84A datasheet(117/337 Pages) MICROCHIP

117 / 337 page

DS30234D-page 117

PIC16C6X

TABLE 12-8:

REGISTERS ASSOCIATED WITH SYNCHRONOUS MASTER TRANSMISSION

FIGURE 12-12: SYNCHRONOUS TRANSMISSION

FIGURE 12-13: SYNCHRONOUS TRANSMISSION THROUGH TXEN

Address

Name

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Value on

POR,

BOR

Value on

all other

Resets

0Ch

PIR1

PSPIF(1)

(2)

RCIF

TXIF

SSPIF

CCP1IF

TMR2IF

TMR1IF

0000 0000

18h

RCSTA

SPEN

RX9

SREN

CREN

—

FERR

OERR

RX9D

0000 -00x

19h

TXREG

USART Transmit Register

0000 0000

8Ch

PIE1

PSPIE(1)

(2)

RCIE

TXIE

SSPIE

CCP1IE

TMR2IE

TMR1IE

0000 0000

98h

TXSTA

CSRC

TX9

TXEN

SYNC

—

BRGH

TRMT

TX9D

0000 -010

99h

SPBRG

Baud Rate Generator Register

0000 0000

Legend: x = unknown, - = unimplemented locations read as '0'. Shaded cells are not used for Synchronous Master Transmission.

Note 1:

PSPIE and PSPIF are reserved on the PIC16C63/R63/66, always maintain these bits clear.

PIE1<6> and PIR1<6> are reserved, always maintain these bits clear.

Bit 0

Bit 1

Bit 7

WORD 1

Q1Q2 Q3Q4 Q1 Q2Q3 Q4Q1 Q2Q3 Q4Q1 Q2Q3 Q4Q1 Q2 Q3Q4

Q3Q4 Q1Q2 Q3Q4 Q1Q2 Q3Q4 Q1Q2 Q3 Q4Q1 Q2Q3 Q4Q1 Q2Q3 Q4Q1 Q2Q3 Q4

Bit 2

Bit 0

Bit 1

Bit 7

RC7/RX/DT pin

RC6/TX/CK pin

Write to

TXREG reg

TXIF bit

(Interrupt flag)

TRMT

TXEN bit

'1'

Note: Sync master mode; SPBRG = '0'. Continuous transmission of two 8-bit words

WORD 2

TRMT bit

Write word1

Write word2

RC7/RX/DT pin

RC6/TX/CK pin

Write to

TXREG reg

TXIF bit

TRMT bit

bit0

bit1

bit2

bit6

bit7

TXEN bit

PIC16F84A Datasheet(PDF) 117 Page - Microchip Technology

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