H8SSLASH2224 datasheet(592/1071 Pages) RENESAS

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Section 14 IEBus™ Controller (IEB) [H8S/2258 Group]

Rev. 5.00 Aug 08, 2006 page 506 of 982

REJ09B0054-0500

14.3.7

IEBus Slave Address Setting Register 2 (IESA2)

IESA2 sets the upper 8 bits of the communications destination slave unit address. For slave

communications, it is not necessary to set this register.

Bit

Bit Name

Initial Value

R/W

Description

ISA11

ISA10

ISA9

ISA8

ISA7

ISA6

ISA5

ISA4

R/W

Upper 8 Bits of IEBus Slave Address

Set upper 8 bits of the communications destination

slave unit address

14.3.8

IEBus Transmit Message Length Register (IETBFL)

IETBFL sets the message length for master or slave transmission.

Bit

Bit Name

Initial Value

R/W

Description

TBFL7

TBFL6

TBFL5

TBFL4

TBFL3

TBFL2

TBFL1

TBFL0

R/W

Transmit Message Length

Set the message length for master or slave

transmission.

If a value exceeding the maximum transmit bytes

for one frame is set in IETBFL, communications

are performed with two or more frames in some

communications modes. In this case, in or after the

second frame, the message length value should be

the number of bytes of the remaining

communications data, however, the initial IETBFL

setting remains unchanged. Therefore, for the

second frame or after, re-set the number of bytes

of the remaining communications data.

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