STR720 datasheet(179/401 Pages) STMICROELECTRONICS

Part #	STR720

Description	ARM720T 16/32-BIT MCU WITH 16K RAM, USB, CAN, 3 TIMERS, ADC, 6 COMMUNICATIONS INTERFACES

PDF	401 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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179 / 401 page

STR720 - UART

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ASCRxBuffer

Address Offset: 08h

Reset value: 0000h

The received data and, if provided by the selected operating mode, the received parity bit can

be read from the receive buffer register.

Bit 15:10 = Reserved.

Will read back 0

Bit 9 = RX[9]: Frame error.

If set, it indicates a frame error occurred on data stored in RX[8:0] (i.e. one of the effective

stop bit values was ‘0’ when the data was received).

Bit 8 = RX[8]: Receive buffer data D8.

Receive buffer data D8, or parity error, or wake-up bit - dependent on the operating mode (the

setting of the Mode field in the ASCControl register).

Note

If the Mode field selects a 7- or 8-bit frame then this bit is undefined. Software should

ignore this bit when reading 7- or 8-bit frames.

Bit 7 = RX[7]: Receive buffer data D7.

Receive buffer data D7, or parity error - dependent on the operating mode (the setting of the

Mode field in the ASCControl register).

Bit 6:0 = RX[6:0]: Receive buffer data D(6:0).

765432

RESERVED

RX[9]

RX[8]

RX[7]

RX[6]

RX[5]

RX[4]

RX[3]

RX[2]

RX[1]

RX[0]

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STR720 Datasheet(PDF) 179 Page - STMicroelectronics