M37160MF datasheet(35/131 Pages) RENESAS

35 / 131 page

Rev.1.01

2003.11.13

page 35 of 130

M37160M8/MA/MF-XXXSP/FP,M37160EFSP/FP

Fig. 8.6.6 I2C Control Register

b7 b6 b5 b4 b3 b2 b1 b0

Bit counter

(Number of transmit/recieve

bits)

(BC0 to BC2)

b2 b1 b0

0 : 8

1 : 7

0 : 6

1 : 5

0 : 4

1 : 3

0 : 2

1 : 1

3I2C-BUS interface use

enable bit (ESO)

0 : Disabled

1: Enabled

Data format selection

bit(ALS)

0 : Addressing mode

1 : Free data format

Addressing format selection

bit (10BIT SAD)

0 : 7-bit addressing format

1 : 10-bit addressing format

6, 7 Connection control bits

between I2C-BUS interface

and ports

(BSEL0, BSEL1)

b7 b6 Connection port (See note)

0: None

1: SCL1, SDA1

0: SCL2, SDA2

1: SCL1, SDA1

I2C control register (S1D) [Address 00F916]

I2C Control Register

Name

Functions

After reset

R W

Note: • Set the corresponding direction register to "1" to use the port as multi-master I2C-BUS interface.

• To use SCL1, SDA1, SCL2 and SDA2, set the port P3 Register (address 00C616) bit 2 to 0.

R W

SCL2, SDA2

Fig. 8.6.7 Port P3 Register

Port P3 register (P3)

[Address 00C616]

Port P3 register

Indeterminate

b7 b6 b5 b4 b3 b2 b1 b0

Nothing is assigned. This bit is write disable bit.

When this bit is read out, the value is "0."

–

(BSEL20)

(See note)

SCL3/P31-SCL1/P11

SDA3/P30-SDA1/P13

Course connection control bit

(BSEL21)

Notes • For the ports used as the Multi-master I

2C-BUS interface, set their direction registers to 1.

• To use SCL3 and SDA3, set the I

2C Control Register (address 00F916) bits 6–7 to 0.

Name

Functions

After reset

R W

Port P30 data

Port P31 data

Switch bit of I

2C-BUS

interface and port P3

Port P30, Port P31

1: I

2CBUS (SDA3,SCL3)

0: Connection

1: Cutting

Port P3 register

Indeterminate

–

Port P35 data

Port P36 data

Indeterminate

–

Port P37data

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