Hitachi H8S/2646 Hardware Manual page 592

Hitachi 16-bit single-chip microcomputer h8s/2646 series

Table of Contents

MCx[5] Bit 4—Remote Transmission Request (RTR): Used to distinguish between data frames

and remote frames.

MCx[5] Bit 3—Identifier Extension (IDE): Used to distinguish between the standard format and

extended format of data frames and remote frames.

MCx[5] Bit 2—Reserved: The initial value of this bit is undefined; it must be initialized (by

writing 0 or 1).

MCx[5] Bits 1 and 0—Extended Identifier (EXD_ID17, EXD_ID16):

MCx[8] Bits 7 to 0—Extended Identifier (EXD_ID15 to EXD_ID8):

MCx[7] Bits 7 to 0—Extended Identifier (EXD_ID7 to EXD_ID0):

These bits set the identifier (extended identifier) of data frames and remote frames.

Extended Identifier

ID17 ID16 ID15 ID14

Remote frame

Standard format

Extended format

ID13 ID12 ID11 ID10

Figure 15-3 Extended Indentifier