PEF22827EL-V11 Lantiq, PEF22827EL-V11 Datasheet - Page 117

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

Specifications of PEF22827EL-V11

• Lead Free Status / RoHS Status: Supplier Unconfirmed

1. Write the opcode of the parameter to the VOC_OC register. For detailed descriptions
2. If necessary, in VOC_DAT, write the number of the band (CARRIER_NUM) to read.
3. Write 40
4. Read VOC_OC.
To monitor transmission of VOC messages at the remote modem, read the
GEN_STATUS2 register. If CF (bit 2) is set to 1, the operation succeeded and the
information can be read from bits 11:0 of the VOC_DAT register. If UTCF (bit 3) is set to
1, the operation failed.
7.6.7
The Rate Adaptive (RA) process enables a modem pair (LT and NT) to optimize their link
configurations based on the line conditions.
This section includes the following sections:
•
•
•
•
•
•
•
7.6.7.1
During RA execution, the RA algorithm selects the profile with the highest rate that meets
user requirements and is within the permitted band plan. In addition, the RA algorithm
can monitor the selected optimal link.
The Rate Adaptive algorithm has two main states, as shown in
below:
•
•
Preliminary Data Sheet
of opcodes and related data fields see
on Page
All other fields are ignored.
– If it contains the same opcode that was sent, read bits 11:0 of VOC_DAT for the
– If it contains 00
– If it contains F0
The Rate Adaptive Loop
Configuring the RA Process
Executing the RA Process
Polling the Status of the RA Process
Selecting an RA Scanning Band Plan
Running the RA Process with PBO in Changing Conditions
Running the RA Process with Long Reach VDSL
“Achieving the Optimal Link” on Page 118
“Monitoring the Optimal Link” on Page 119
requested parameters.
the request
The Rate Adaptive Process
The Rate Adaptive Loop
H
193.
to the VOC_CNTL register.
H
H
, there is a communication error.
(Unable to Comply VOC), the remote modem cannot comply with
117
Table 69 “Link Performance Parameters”
Operation – Digital Block
Figure 18
Rev. 1.1, 2005-01-30
and described
VDSL6100i
PEF 22827