Unit Address Register (Mawh, Mawl); Slave Address Register (Sawh, Sawl) - Fujitsu F2MC-16LX MB90580 Series Hardware Manual

13.3 Registers and Register Details

13.3.3 Unit address register (MAWH, MAWL)

Unit address register (MAWH, MAWL)
Address: 000071
H
Reserved Reserved
Read/write
Initial value
Address: 000070
H
Read/write
Initial value
These two registers MAWH, MAWL are used to set its own unit address (12 bits). When the unit is config-
ured as master, the unit address set in MAWH, MAWL is transmitted as master address. When it is config-
ured as slave mode, this unit address is used to compare with the received slave address.
Bit 15 to 12 are reserved bits and always write '1' to them. The read values are undefined.
Note:Make sure to set the unit address before the communication inhibit state is released.

13.3.4 Slave address register (SAWH, SAWL)

Slave address register (SAWH, SAWL)
Address: 000073
H
Reserved Reserved
Read/write
Initial value
Address: 000072
H
Read/write
Initial value
These two registers SAWH, SAWL are used to set the slave address (12 bits) for master transmit.
Bit 15 to 12 are reserved bits and always write '1' to them. The read values are undefined.
Note:Make sure to set the slave address before the communication inhibit state is
released.
150 Chapter 13: IE Bus
15 14 13
Reserved Reserved
(R/W) (R/W) (R/W)
(X) (X) (X)
7 6 5
MA07 MA06 MA05
(R/W) (R/W) (R/W)
(X) (X) (X)
15 14 13
Reserved
(R/W) (R/W) (R/W)
(X) (X) (X)
7 6 5
SA07 SA06 SA05
(R/W) (R/W) (R/W)
(X) (X) (X)
12 11 10
MA11 MA10
(R/W) (R/W) (R/W)
(X) (X)
(X)
4 3
MA04 MA03 MA02
(R/W) (R/W)
(R/W)
(X) (X) (X)
12 11 10
Reserved
SA11 SA10
(R/W) (R/W)
(R/W)
(X) (X) (X)
4 3 2
SA04 SA03 SA02
(R/W) (R/W)
(R/W)
(X) (X) (X)
9 8
MA09 MA08
(R/W) (R/W)
(X) (X)
2 1 0
MA01 MA00
(R/W) (R/W)
(X) (X)
9 8
SA09 SA08
(R/W) (R/W)
(X) (X)
1 0
SA01 SA00
(R/W) (R/W)
(X) (X)
MB90580 Series
Bit Number
MAWH
Bit Number
MAWL
Bit Number
SAWH
Bit Number
SAWL