PEF22827ELV1.1 Lantiq, PEF22827ELV1.1 Datasheet - Page 121

• Manufacturer Part Number: PEF22827ELV1.1
• Manufacturer: Lantiq

Specifications of PEF22827ELV1.1

• Lead Free Status / RoHS Status: Supplier Unconfirmed

7.6.7.2
The following registers are required for configuring the Rate Adaptive (RA) process:
•
•
•
•
7.6.7.3
Use the
information, refer to the Application Note.
7.6.7.4
At the LT only, verify the RA status by polling the
RA_STATUS
Note: For more information on RA, please see the Application Note on the RA process.
7.6.7.5
The RA scan profile used by the RA algorithm is configurable. Management can choose
any band plan in the range 0.138 MHz - 12.0 MHz, including the upstream 0 band for
Long Reach VDSL (LR-VDSL), provided that the following two statements are true:
•
•
Preliminary Data Sheet
Noise margin registers (LT only)
–
–
–
–
–
Maximum bit rate registers (LT only)
–
–
RA scan profile registers (LT and NT)
– RA center frequency registers: RA_CF_D1, RA_CF_D2, RA_CF_U1,
– Symbol rate registers: RA_SR_D1, RA_SR_D2, RA_SR_U1,
– PSD level registers: RA_PSD_D1, RA_PSD_D2, RA_PSD_U1,
– PSD mask register:
– PSD maximum level (while using the first downstream band only):
Interleaver delay registers (LT only)
–
–
Symbol rate (SR) values for both bands are even numbers.
The result of the low frequency on band 2 minus the low frequency on band 1 is a
multiple of 4, where the low frequency on each band is center frequency minus
RA_MN_MRG_D1
RA_MN_MRG_D2
RA_MN_MRG_U0
RA_MN_MRG_U1
RA_MN_MRG_U2
RA_MX_RATE_DS
RA_MX_RATE_US
RA_INTR_DS
RA_INTR_US
RA_COMMAND
Configuring the RA Process
Executing the RA Process
Polling the Status of the RA Process
Selecting an RA Scanning Band Plan
register at address 5B40
(when configuring LR)
RA_PSD_MASK
register at the LT for execution. For implementation
H
.
121
RA_ANAL
Operation – Digital Block
and
RA_RDY
RA_SR_U2
Rev. 1.1, 2005-01-30
RA_PSD_U2
RA_PSD_MAX
VDSL6100i
PEF 22827
RA_CF_U2
bits in the