PDSP16256 Datasheet, PDF (12/28 Pages) Mitel Networks Corporation – Programmable FIR Filter

PDSP16256
128 TAP
127
NO SWAP
POSSIBLE
0
64 TAP
127
FILTER B
NO SWAP
POSSIBLE
64
63
FILTER A
NO SWAP
POSSIBLE
0
12
RESULTS
FEN
OUT
DB15:0 FEN F31:0
INTERFACE
DEVICE
DA15:0 DFEN X31:0
DB15:0 FEN F31:0
INTERMEDIATE
DEVICE
DA15:0 DFEN X31:0
DB15:0 FEN F31:0
TERMINATION
DEVICE
DA15:0 DFEN X31:0
DATA IN
Figure. 13 Full speed cascaded system
64 TAP
127
32 TAP
127
16 TAP
127
UPPER
BANK
NOT USED
64
64
63
63
NOT USED
LOWER
BANK
UPPER
BANK
32
31
LOWER
BANK
0
0
(a) Single Filters
32 TAP
16 TAP
127
127
32
31
UPPER
16
BANK
15
LOWER
0
BANK
8 TAP
127
B UPPER
BANK
96
95
NOT USED
A UPPER
BANK
64
63
B LOWER
BANK
32
31
A LOWER
BANK
64
63
B UPPER
48
47
A UPPER
32
31
B LOWER
16
15
A LOWER
0
0
(b) Dual Filters
NOT USED
32
31
B UPPER
A UPPER
B LOWER
0
A LOWER
Figure. 14 Coefficient memory map