STR720 datasheet(233/401 Pages) STMICROELECTRONICS

部件名	STR720

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

PDF	401 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

233 / 401 page

STR720 - CONTROLLER AREA NETWORK (CAN)

233/401

Transmission Request Registers 1 & 2 (CAN_TxRnR)

Address Offset: 100h (CAN_TxR1R), 104h (CAN_TxR2R)

Reset Value: 0000 0000h

These registers hold the TxRqst bits of the 32 Message Objects. By reading the TxRqst bits,

the CPU can check which Message Object in a Transmission Request is pending. The TxRqst

bit of a specific Message Object can be set/reset by the application software through the IFn

Message Interface Registers or by the Message Handler after reception of a Remote Frame

or after a successful transmission.

TxRqst[32:17]

987

6543

210

TxRqst[16:1]

Bits 31:16

TxRqst32-17 Transmission Request Bits (of all Message Objects)

0: This Message Object is not waiting for transmission.

1: The transmission of this Message Object is requested and is not yet done.

These bits are read only.

Bits 15:0

TxRqst16-1 Transmission Request Bits (of all Message Objects)

0: This Message Object is not waiting for transmission.

1: The transmission of this Message Object is requested and is not yet done.

These bits are read only.

STR720 数据表(PDF) 233 Page - STMicroelectronics