Panasonic MN101C77C ユーザーズマニュアル

Control Registers

Chapter 13    Serial Interface 4

XIII - 7

14

14

„

Serial interface 4 Status Register (SC4STR)

0

1

2

4

5

6

7

3

 ( At reset: X X X X X X X X)

SC4STR

SLVBSY

RSTRT

STRT

I2CINT

WRS

0

1

Undetected

ACK detection flag

Detected

ACKVALID

0

1

Slave

 → 

Master

Data transfer direction 
determination flag

 Master

 → 

Slave 

WRS

I2CBSY

ACKVALID

-

0

1

Other than during data transfer 

Slave busy flag

During data transfer 

SLVBSY

0

1

Bus free status

Bus busy flag

Bus busy status

I2CBSY

0

1

Re-start condition detection

RSTRT

0

1

Start condition detection

STRT

0

1

Undetected

Interrupt detection flag

Detected

I2CINT

Undetected

Detected

Undetected

Detected