PDSP16256 Datasheet, PDF (12/25 Pages) Mitel Networks Corporation – Programmable FIR Filter

PDSP16256/A
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
128 TAP
127
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
NO SWAP
POSSIBLE
0
64 TAP
127
FILTER B
NO SWAP
POSSIBLE
64
63
FILTER A
NO SWAP
POSSIBLE
0
12
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