SC18IS600(2006) View Datasheet(PDF) - NXP Semiconductors.

Part Name

Description

Manufacturer

SC18IS600
(Rev.:2006)

SPI to I2C-bus interface

NXP Semiconductors. 

NXP Semiconductors

SC18IS600/601

SPI to I2C-bus interface

When the host issues a Read Buffer command, the SC18IS600/601 will return the data in

the read buffer on the MISO pin. Note that the Read Buffer will be overwritten if an

additional ‘Read N bytes’ or a ‘Read after write’ command is executed before the Read

Buffer command.

6.6.5 I2C-bus write after write

SPI host sends

0x03 NUMBER OF NUMBER OF

SLAVE 1

COMMAND BYTES 1

BYTES 2 ADDRESS + W

DATA

BYTE 1

Fig 16. Write after write

DATA

BYTE N

SLAVE 2

ADDRESS + W

DATA

BYTE 1

DATA

BYTE N

002aab721

When the host issues this command, the SC18IS600/601 will first write N data bytes to

the I2C-bus slave 1 device followed by a write of M data bytes to the I2C-bus slave 2

device.

6.6.6 SPI configuration

SPI host sends

0x18

SPI

COMMAND CONFIGURATION

CS

SCLK

MOSI

Fig 17. SPI configuration

character 0x18

SPI configuration data

002aab722

Table 9. SPI configuration

SPI configuration

Data order

0x42

LSB first

0x81

MSB first (default)

The SPI configuration command can be used to change the order in which the bits of SPI

data byte are sent on the SPI bus. In the LSB first configuration (SPI configuration data is

0x42), bit 0 is the first bit sent of any SPI byte. In MSB first (SPI configuration data is

0x81), bit 7 is the first bit sent. Table 9 shows the two possible configurations that can be

programmed.

SC18IS600_601_3

Product data sheet

Rev. 03 — 13 December 2006

© NXP B.V. 2006. All rights reserved.

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