HD6432138SW datasheet(536/1061 Pages) RENESAS

536 / 1061 page

Section 16 I

2C Bus Interface [H8S/2138 Group Option]

Rev. 4.00 Jun 06, 2006 page 482 of 1004

REJ09B0301-0400

Bit 7—DDC Mode Switch Enable (SWE): Selects the function for automatically switching IIC

channel 0 from formatless mode to the I

2C bus format.

Bit 7

SWE

Description

Automatic switching of IIC channel 0 from formatless mode to I

2C bus format is

disabled

(Initial value)

Automatic switching of IIC channel 0 from formatless mode to I

2C bus format is

enabled

Bit 6—DDC Mode Switch (SW): Selects either formatless mode or the I

2C bus format for IIC

channel 0.

Bit 6

Description

IIC channel 0 is used with the I

2C bus format

(Initial value)

[Clearing conditions]

1. When 0 is written by software

2. When a falling edge is detected on the SCL pin when SWE = 1

IIC channel 0 is used in formatless mode

[Setting condition]

When 1 is written in SW after reading SW = 0

Bit 5—DDC Mode Switch Interrupt Enable Bit (IE): Enables or disables an interrupt request to

the CPU when automatic format switching is executed for IIC channel 0.

Bit 5

Description

Interrupt when automatic format switching is executed is disabled

(Initial value)

Interrupt when automatic format switching is executed is enabled

HD6432138SW Datasheet(PDF) 536 Page - Renesas Technology Corp