PEF22827EL-V11 Lantiq, PEF22827EL-V11 Datasheet - Page 104

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

Specifications of PEF22827EL-V11

• Lead Free Status / RoHS Status: Supplier Unconfirmed

7.6.3
Fields in the MAIN_CTL, MAIN_MODE and LINK_MODE registers control and configure
links. For more information on these fields, see detailed descriptions in:
•
•
•
The fields and bits that control and configure links are:
•
•
•
•
Note: The recommended option is to enable the wake-up mechanism at both sides and
7.6.4
The current STP (CR_STP) is the set of parameters that describes the currently active
link. A warm start STP (WS_STP) contains the parameters used during a warm start.
Table 34
A default STP contains a set of parameters that is used to establish a link for the first
time. Three default STPs support the most popular world connection standards. Two
(DF_STP1 and DF_STP2) are customizable. If a link is not established using DF_STP0,
after the timeout period, the system will try with the next default STP, DF_STP1. If that
fails, after the timeout period, DF_STP2 is used. Once a link is established, the
successful STP is the first used in case of a link failure.
Preliminary Data Sheet
“MAIN_CTL” on Page 186
“MAIN_MODE” on Page 186
“LINK_MODE” on Page
MAIN_MODE (bits 2:0 in the MAIN_MODE register at
environments described in
a standard compliant link establishes a target link.
– At the LT, this field can also be used to establish a default link or a reduced link.
– At the NT, this field cannot be changed and is always set to standard link
INITIATOR (bit 0 in LINK_MODE at
a link by transmitting a signal to the channel, or waits for the other side to initiate a
link.
PBO_EN (bit 3 in LINK_MODE at
for the NT only.
IDLE (bit 4 in LINK_MODE at
is cleared to 0, a target link is established. This bit is supported in the LT only.
activation.
to set the NT as initiator. When this is done, the modem at the LT can wait quietly
in the DSLAM with very low power consumption. Once the NT is connected, it
transmits a WAKEUP signal and the link is established.
If the wake-up mechanism is not enabled, it is advisable to set the LT as the
initiator. In this case, the LT constantly transmits a VDSL signal, which enables the
NT to tune its power back off mechanism when it is connected.
shows the address to read for each parameter in the current or warm start STP.
Configuration of Standard Compliant Links
Current and Target STPs
187.
“Application Management” on Page
8F02
8F02
H
) is set to 1 to establish an idle link. When this bit
8F02
104
H
) enables power back off. This bit is relevant
H
) determines whether the modem initiates
8F01
Operation – Digital Block
H
) selects one of the link
Rev. 1.1, 2005-01-30
100. Selection of
VDSL6100i
PEF 22827