HD6417641 RENESAS [Renesas Technology Corp], HD6417641 Datasheet - Page 536
HD6417641
Manufacturer Part Number
HD6417641
Description
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6417641.pdf
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Section 16 I
16.3.6
SAR is an 8-bit readable/writable register that selects the communications format and sets the
slave address. In slave mode with the I
upper seven bits of the first frame received after a start condition, this module operates as the slave
device. SAR is initialized to H'00 by a power-on reset.
Rev. 4.00 Sep. 14, 2005 Page 486 of 982
REJ09B0023-0400
Bit
1
0
Bit
7 to 1
0
Slave Address Register (SAR)
Bit Name
AAS
ADZ
Bit Name
SVA6 to SVA0 All 0
FS
2
C Bus Interface 2 (IIC2)
Initial
Value
0
0
Initial
Value
0
R/W
R/W
R/W
R/W
R/W
R/W
2
C bus format, if the upper seven bits of SAR match the
Description
Slave Address Recognition Flag
In slave receive mode, this flag is set to 1 if the first
frame following a start condition matches bits SVA6 to
SVA0 in SAR.
[Setting conditions]
•
•
[Clearing condition]
•
General Call Address Recognition Flag
This bit is valid in I
[Setting condition]
•
[Clearing condition]
•
Description
Slave Address 6 to 0
These bits set a unique address in bits SVA6 to SVA0,
differing form the addresses of other slave devices
connected to the I
Format Select
0: I
1: Clocked synchronous serial format is selected
2
When the slave address is detected in slave receive
mode
When the general call address is detected in slave
receive mode.
When 0 is written in AAS after reading AAS=1
When the general call address is detected in slave
receive mode
When 0 is written in ADZ after reading ADZ=1
C bus format is selected
2
2
C bus.
C bus format slave receive mode.
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