SC18IM700_2

© NXP B.V. 2007. All rights reserved.

Product data sheet

Rev. 02 — 10 August 2007

5 of 22

NXP Semiconductors

SC18IM700

7.1.2 Read N byte from slave device

slave device address, and the total number of bytes to be read from the addressed

7.1.3 Write to 18IM internal register

The host issues the internal register write command by sending a W character followed by

the register and data pair. Each register to be written must be followed by the data byte.

The frame is then terminated with a P character.

Remark: Write and read from the internal 18IM register is processed immediately as soon

as the intended register is determined by 18IM.

Fig 3.

Write N bytes to slave device

002aac048

NUMBER

OF BYTES

S CHAR.

SLAVE ADR.

+ W

host sends

DATA 0

DATA N

P CHAR.

Fig 4.

Read N byte from slave device

002aac049

NUMBER

OF BYTES

S CHAR.

SLAVE ADR.

+ R

host sends

18IM responds

P CHAR.

DATA 0

DATA N

Fig 5.

Write to 18IM internal register

002aac050

W CHAR.

REGISTER 0

DATA 0

REGISTER N

DATA N

P CHAR.