PEF22827EL-V11 Lantiq, PEF22827EL-V11 Datasheet - Page 115

• Manufacturer Part Number: PEF22827EL-V11
• Manufacturer: Lantiq

Specifications of PEF22827EL-V11

• Lead Free Status / RoHS Status: Supplier Unconfirmed

Table 38
Parameter
Erased Bytes (
Protection Time in s (
1)
Table 39
s upstream operation, with
Table 39
Parameter
Fast Channel Bytes (
must be a multiple of 4
Slow Channel Bytes (
Slow Bit Rate in Mbit/s
Interleaver Depth Index
Interleaver Block in Bytes (
Memory Allocation (
Bytes
Total Memory for Interleaver and
De-interleaver in Bytes
Delay in s (
Erased Bytes (
Protection Time in s (
1)
7.6.5
Upstream Power Back Off (PBO) ensures that all NT modems are received by the LT
with the same power, as if they were located at the maximum reach. The PBO algorithm
converts measured downstream attenuation into required upstream Power Spectral
Density (PSD) levels.
Preliminary Data Sheet
Upstream memory allocation plus downstream memory allocation may not exceed 24 KB.
Upstream memory allocation plus downstream memory allocation may not exceed 24 KB.
1)
shows how to calculate the protection provided by the interleaver for 9.99 Mbit/
Power Back Off (PBO)
DL
Protection Calculation Parameters, 9.99 Bit Rate, Upstream, S/8
(page 2 of 2)
Protection Calculation Parameters, 9.99 Bit Rate, Upstream, S/4
E
E
)
B
B
)
)
MEM
F
S
),
E
E
) 200
M
t
t
)
)
S
) in
I
)
4. See also,
S
F
/ 4
Parameter Values
0
200
9.99
3
50
3,675
7,350
5,885.89
302
241.8418
Parameter Values
326
261.0611
115
“Interleaving” on Page
4
196
9.7902
3
49
3,528
7,056
5,765.77
296
241.8745
170
261.8003
Operation – Digital Block
0
200
9.99
6
50
7,350
14,700
11,771.77 11,531.53
602
482.0821
626
501.3013
63.
Rev. 1.1, 2005-01-30
VDSL6100i
PEF 22827
4
196
9.7902
6
49
14,112
590
7,056
482.1148
326
502.0405