TMS320F241FN datasheet(37/66 Pages) TI

37 / 66 page

TMS320C242

DSP CONTROLLER

SPRS063B – DECEMBER 1997 – REVISED DECEMBER 1999

POST OFFICE BOX 1443

• HOUSTON, TEXAS 77251–1443

serial communications interface (SCI) module (continued)

CLOLK

WUT

Frame Format and Mode

Even/Odd

Enable

Parity

SCI RX Interrupt

BRKDT

SCICTL1.1

RXRDY

SCIRXST.6

SCICTL1.3

External

Connections

SCICTL2.1

RX/BK INT ENA

SCIRXD

SCIRXST.1

TXENA

SCI TX Interrupt

TX EMPTY

TXRDY

SCICTL2.0

TX INT ENA

SCITXD

RXENA

SCIRXD

RXWAKE

SCICTL1.0

SCICTL1.6

RX ERR INT ENA

TXWAKE

SCITXD

TXINT

SCICCR.6 SCICCR.5

SCITXBUF.7–0

SCIHBAUD. 15 – 8

Baud Rate

MSbyte

SCILBAUD. 7 – 0

SCIRXBUF.7–0

Receiver-Data

Buffer

SCIRXST.7

FE OE

RX Error

SCIRXST.4 – 2

Transmitter-Data

Buffer Register

SCICTL2.6

SCICTL2.7

Baud Rate

LSbyte

RXSHF

TXSHF

SCIRXST.5

SCIPRI.5

SCIPRI.6

SCI Priority Level

Level 2 Int.

Level 1 Int.

Level 2 Int.

Level 1 Int.

SCI TX

Priority

SCI RX

Priority

Figure 11. Serial Communications Interface (SCI) Module Block Diagram

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