Rev. 1.00, 09/03, page 488 of 704
17.3.8
Slave Address Register B (SARB)
SARB sets slave addresses. When the chip is in slave mode, if the upper 7 bits in SARB match the
upper 7 bits of the first frame received after a start condition, the chip operates as the slave device.
Bit
Bit Name Initial Value R/W Description
7 to 1
SVA6 to
SVA0
All 0
R/W
Slave Address 6 to 0
Set a unique address in bits SVA6 to SVA0, differing from
the addresses of other slave devices connected to the I
2
C
bus.
0
SARE
0
R/W Slave Address Enable
Selects whether slave addresses in SARB are recognized
or not.
0: Ignores slave addresses in SARB
1: Recognizes slave addresses in SARB
17.3.9
Slave Address Mask Register (SAMR)
SAMR masks slave addresses set in SAR and controls automatic switching of transmit modes in
slave mode.
Bit
Bit Name Initial Value R/W Description
7
6
5
4
3
2
1
MSA6
MSA5
MSA4
MSA3
MSA2
MSA1
MSA0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Slave Address Mask 6 to 0
Correspond to the SVA6 to SVA0 bits in SAR and control
comparison conditions for addresses set in SAR and
addresses of upper 7 bits of the first frame received after a
start condition in slave mode.
0: Compare addresses set in bits SVA6 to SVA0 in SAR
and receive addresses
1: Operate assuming that receive addresses have matched
bits SVA6 to SVA0 in SAR
0
MTRS
0
R/W Transmit Mode Switch Mask
Controls automatic switching of transmit modes by the
eighth bit of the first frame in slave mode.
0: When the eighth bit of the first frame is 1, the TRS bit in
ICCRA and TDRE bit in ICSR are automatically set to 1
and a transition is made to slave transmit mode.
1: The TRS bit in ICCRA and TDRE bit in ICSR are not
automatically changed by the eighth bit of the first
frame.
Summary of Contents for H8S/2437
Page 2: ...Rev 1 00 09 03 page ii of xxxviii ...
Page 8: ...Rev 1 00 09 03 page viii of xxxviii ...
Page 32: ...Rev 1 00 09 03 page xxxii of xxxviii ...
Page 38: ...Rev 1 00 09 03 page xxxviii of xxxviii ...
Page 168: ...Rev 1 00 09 03 page 130 of 704 ...
Page 336: ...Rev 1 00 09 03 page 298 of 704 ...
Page 402: ...Rev 1 00 09 03 page 364 of 704 ...
Page 454: ...Rev 1 00 09 03 page 416 of 704 ...
Page 512: ...Rev 1 00 09 03 page 474 of 704 ...
Page 562: ...Rev 1 00 09 03 page 524 of 704 ...
Page 648: ...Rev 1 00 09 03 page 610 of 704 ...
Page 672: ...Rev 1 00 09 03 page 634 of 704 ...
Page 732: ...Rev 1 00 09 03 page 694 of 704 ...
Page 742: ...Rev 1 00 09 03 page 704 of 704 ...
Page 745: ......
Page 746: ...H8S 2437 Group Hardware Manual REJ09B0059 0100Z ...