PIC17C4X datasheet(75/184 Pages) MICROCHIP

75 / 184 page

 2000 Microchip Technology Inc.

DS30605C-page 75

PIC16C63A/65B/73B/74B

TABLE 11-6:

REGISTERS ASSOCIATED WITH SYNCHRONOUS MASTER RECEPTION

FIGURE 11-8:

SYNCHRONOUS RECEPTION (MASTER MODE, SREN)

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

0Bh,8Bh

INTCON

GIE

PEIE

T0IE

INTE

RBIE

T0IF

INTF

RBIF

0000 000x

0000 000u

0Ch

PIR1

PSPIF(1)

ADIF(2)

RCIF

TXIF

SSPIF

CCP1IF

TMR2IF

TMR1IF

0000 0000

18h

RCSTA

SPEN

RX9

SREN

CREN

—

FERR

OERR

RX9D

0000 -00x

1Ah

RCREG

USART Receive register

0000 0000

8Ch

PIE1

PSPIE(1) ADIE(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: u = unchanged, x = unknown, - = unimplemented, read as '0'.

Shaded cells are not used for synchronous master reception.

Note

Bits PSPIE and PSPIF are reserved on the PIC16C63A/73B; always maintain these bits clear.

2: Bits ADIE and ADIF are reserved on the PIC16C63A/65B; always maintain these bits clear.

CREN bit

RC7/RX/DT pin

RC6/TX/CK pin

Write to

bit SREN

SREN bit

RCIF bit

(interrupt)

Read

RXREG

Note: Timing diagram demonstrates SYNC Master mode with bit SREN = '1' and bit BRG = '0'.

Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4

Q1 Q2 Q3 Q4Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4

'0'

bit0

bit1

bit2

bit3

bit4

bit5

bit6

bit7

'0'

Q1 Q2 Q3 Q4

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