XC886/888CLM
Multiplication/Division Unit
User’s Manual
10-6
V1.3, 2010-02
MDU, V2.1
10.4
Register Map
lists the MDU registers with their addresses:
The MDx and MRx registers share the same address. However, since MRx registers
should never be written to, any write operation to one of these addresses will be
interpreted as a write to an MDx register.
In the event of a read operation, an additional bit MDUCON.RSEL is needed to select
which set of registers, MDx or MRx, the read operation must be directed to. By default,
the MRx registers are read.
Table 10-2
MDU Registers
SFR
Address
Name
MDUCON
B1
H
(mapped)
MDU Control Register
MDUSTAT
B0
H
(mapped)
MDU Status Register
MD0/MR0
B2
H
(mapped)
MDU Data/Result Register 0
MD1/MR1
B3
H
(mapped)
MDU Data/Result Register 1
MD2/MR2
B4
H
(mapped)
MDU Data/Result Register 2
MD3/MR3
B5
H
(mapped)
MDU Data/Result Register 3
MD4/MR4
B6
H
(mapped)
MDU Data/Result Register 4
MD5/MR5
B7
H
(mapped)
MDU Data/Result Register 5
*