h8s-2635 Renesas Electronics Corporation., h8s-2635 Datasheet - Page 604

• Manufacturer Part Number: h8s-2635
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Section 15 I
15.2.3
SARX is an 8-bit readable/writable register that stores the second slave address and selects the
communication format. When the chip is in slave mode (and the addressing format is selected), if
the upper 7 bits of SARX match the upper 7 bits of the first frame received after a start condition,
the chip operates as the slave device specified by the master device. SARX is assigned to the same
address as ICDR, and can be written and read only when the ICE bit is cleared to 0 in ICCR.
SARX is initialized to H'01 by a reset and in hardware standby mode.
Bits 7 to 1—Second Slave Address (SVAX6 to SVAX0): Set a unique address in bits SVAX6 to
SVAX0, differing from the addresses of other slave devices connected to the I
Rev. 6.00 Feb 22, 2005 page 544 of 1484
REJ09B0103-0600
SAR
Bit 0
FS
0
1
Second Slave Address Register (SARX)
SARX
Bit 0
FSX
0
1
0
1
2
C Bus Interface [Option] (Only for the H8S/2638, H8S/2639, and H8S/2630)
Operating Mode
I
I
I
Synchronous serial format
2
2
2
C bus format
C bus format
C bus format
SAR and SARX slave addresses recognized
SAR slave address recognized
SARX slave address ignored
SAR slave address ignored
SARX slave address recognized
SAR and SARX slave addresses ignored
2
C bus.
(Initial value)