HD64F2145 datasheet(456/829 Pages) RENESAS

456 / 829 page

Rev. 2.0, 08/02, page 416 of 788

Bit

Bit Name

Initial Value R/W

Description

AAS

R/(W)* Slave Address Recognition Flag

In I

2C bus format slave receive mode, this flag is set to 1 if

the first frame following a start condition matches bits SVA6

to SVA0 in SAR, or if the general call address (H'00) is

detected.

[Setting condition]

When the slave address or general call address (one frame

including a R/

: bit is H’00) is detected in slave receive

mode and FS = 0 in SAR

[Clearing conditions]

• When ICDR is written to (transmit mode) or read from

(receive mode)

• When 0 is written in AAS after reading AAS = 1

• In master mode

1ADZ

R/(W)* General Call Address Recognition Flag

In I

2C bus format slave receive mode, this flag is set to 1 if

the first frame following a start condition is the general call

address (H'00).

[Setting condition]

When the general call address (one frame including a R/

bit is H’00) is detected in slave receive mode and FS = 0 or

FSX = 0

[Clearing conditions]

• When ICDR is written to (transmit mode) or read from

(receive mode)

• When 0 is written in ADZ after reading ADZ = 1

• In master mode

If a general call address is detected while FS=1 and

FSX=0, the ADZ flag is set to 1; however, the general call

address is not recognized (AAS flag is not set to 1).

HD64F2145 Datasheet(PDF) 456 Page - Renesas Technology Corp