PEF22827EL-V11 Lantiq, PEF22827EL-V11 Datasheet - Page 131

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

Specifications of PEF22827EL-V11

• Lead Free Status / RoHS Status: Supplier Unconfirmed

Figure 22
7.6.11
To monitor voltage drops in the DSLAM at the NT end, do the following:
1. Connect the external voltage drop sensing signal to the
2. At the LT end, poll bit 7 of the
7.6.12
When the EOC interface is disabled (default), LEDs on its pins and signals show the
status of the link, RS errors and network activity. These LEDS are driven on the
EOC_RDATA,
“Configuration Pins” on Page
•
•
•
To enable LEDs, disable the EOC interface by clearing the EOC_EN bit (bit 2 of the
LINK_MODE register at
Preliminary Data Sheet
end. When this signal is asserted, a dying gasp indication is sent to the LT end.
bit is cleared to 0.
Link Status - Set to high (ON) when a VDSL link is established, otherwise it is set to
low (OFF). This indication is driven on the EOC_RDATA pin.
RS Error - Set to high (ON) for a period of 25 ms each time uncorrectable frames are
detected by the RS mechanism. This indication is driven on the EOC_REN pin.
Network activity - Set to high (ON) for a period of 25 ms each time Ethernet packets
accumulate in the TPS-TC layer buffers. This indication is driven on the EOC_TEN
pin.
RX
TX
The Dying Gasp Mechanism
External Status Signals (LEDs)
Remote Loop Back and Local Loop Back
Local Loop Back
EOC_REN
8F02
D
H
and
) to 0.
81.
GEN_STATUS2 (8F10
A
EOC_TEN
131
pins,
A
respectively
H
) register. After it is read, this
Line Loop Back
Operation – Digital Block
WAKEUP_D
D
R_and_L_loopback
Rev. 1.1, 2005-01-30
(see
pin at the NT
VDSL6100i
PEF 22827
Table 27