PDSP1601MC Datasheet, PDF (8/18 Pages) Mitel Networks Corporation – ALU and Barrel Shifter

PDSP1601 MC
Multiplexers
There are four user selectable on-chip multiplexers (A-
MUX, B-MUX, S-MUX and C-MUX).
These four multiplexers support instructions as tabulated
in Table 5.
The MUX instructions are latched such that the instruction
will not start executing until the rising edge of CLK latches the
instruction onto the device.
A-MUX
MARAX
MAAPR
MABPR
MARSX
B-MUX
S-MUX
C-MUX
MSA1 MSA2
0
0
0
1
1
0
1
1
MSB
0
1
MSS
0
1
MSC
0
1
Output
ALU REGISTER FILE OUPUT
A-PORT INPUT
B-PORT INPUT
SHIFTER REGISTER FILE OUTPUT
Output
B-PORT INPUT
SHIFTER REGISTER FILE OUTPUT
Output
B-PORT INPUT
SHIFTER REGISTER FILE OUTPUT
Output
ALU REGISTER FILE OUTPUT
SHIFTER REGISTER FILE OUTPUT
Table 5
8