UPD72042 datasheet(35/92 Pages) NEC

Part #	UPD72042

Description	LSI DEVICES FOR Inter Equipment BusTM (IEBusTM) PROTOCOL CONTROL

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Manufacturer	NEC [NEC]

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µPD72042

35

Data Sheet S14870EJ1V0DS00

SAR1

Address

: 0100B (4H) (SAR1)

SAR2

0101B (5H) (SAR2)

Read/write

: Write

Slave address register

When reset : Undefined (the pre-

vious data is held)

The SAR1 and SAR2 registers are used to set the address of a remote station (slave address) in master

communication.

Set SAR1 and SAR2 while the value of MARQ of the FLG register is 0 (while master communication is not

requested).

b7

Slave address (low-order 4 bits)

b4

b3

b0

SAR1

b7

b0

Slave address (high-order 8 bits)

SAR2

0

000

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