H8SSLASH2225 datasheet(591/1071 Pages) RENESAS

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

Rev. 5.00 Aug 08, 2006 page 505 of 982

REJ09B0054-0500

14.3.5

IEBus Master Unit Address Register 2 (IEAR2)

IEAR2 sets the upper 8 bits of the master unit address. In master communications, this register

becomes the master address field value. In slave communications, this register is compared with

the received slave address field.

Bit

Bit Name

Initial Value

R/W

Description

IAR11

IAR10

IAR9

IAR8

IAR7

IAR6

IAR5

IAR4

R/W

Upper 8 Bits of IEBus Master Unit Address

Set the upper 8 bits of the master unit address.

14.3.6

IEBus Slave Address Setting Register 1 (IESA1)

IESA1 sets the lower 4 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

ISA3

ISA2

ISA1

ISA0

R/W

Lower 4 Bits of IEBus Slave Address

These bits set the lower 4 bits of the

communications destination slave unit address

3 to 0



All 0



Reserved

These bits are always read as 0 and cannot be

modified.

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