Master Address Read Register (Marh, Marl) - Fujitsu F2MC-16LX MB90580 Series Hardware Manual

13.3 Registers and Register Details

13.3.10 Master address read register (MARH, MARL)

Master address read register (MARH, MARL)
Address: 00007D
H
Reserved Reserved
Read/write
Initial value
Address: 00007C
H
Read/write
Initial value
[bit 15 - 12] Reserved bits:
Always reading '1' from these bits.
[bit 11 - 0] MA11 - MA00 (Master address):
In slave mode, these bits store the address of the master that has won the arbitration in master address
field.
If the unit itself is the master, then the unit address stored in unit address register (MAWH, MAWL) will
be read out.
158 Chapter 13: IE Bus
15 14 13
Reserved
(R) (R)
(R)
(1) (1)
(1)
7 6 5
MA07 MA06 MA05
(R) (R)
(R)
(X) (X)
(X)
12 11 10
MA11 MA10
Reserved
(R)
(R) (R)
(X)
(1) (X)
4 3
MA04 MA03 MA02
(R) (R)
(R)
(X) (X)
(X)
9 8
MA09 MA08
(R)
(R)
(X)
(X)
2 1 0
MA01 MA00
(R)
(R)
(X)
(X)
MB90580 Series
Bit Number
MARH
Bit Number
MARL