DS3163 Maxim Integrated Products, DS3163 Datasheet - Page 163
DS3163
Manufacturer Part Number
DS3163
Description
IC TRPL ATM/PACKET PHY 400-PBGA
Manufacturer
Maxim Integrated Products
Datasheet
1.DS3163.pdf
(384 pages)
Specifications of DS3163
Applications
*
Mounting Type
Surface Mount
Package / Case
400-BGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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DS3161/DS3162/DS3163/DS3164
Figure 10-40. DS3 Multiframe Framer State Diagram
Sync
Timeout
Verify
Load
2 multiframe loaded
If multiframe alignment OOF is disabled, an Out Of Frame (OOF) condition is declared when three or more out of
the last sixteen consecutive subframe alignment bits (F-bits) have been errored, or a manual resynchronization is
requested. If multiframe alignment OOF is enabled, an OOF condition is declared when three or more out of the
last sixteen consecutive F-bits have been errored, when an OOMF condition is declared, or when a manual
resynchronization is requested. If multiframe alignment OOF is disabled, an OOF condition is terminated when
none of the last sixteen consecutive F-bits has been errored, or when the DS3 framer updates the data path frame
counters. If multiframe alignment OOF is enabled, an OOF condition is terminated when an OOMF condition is not
active and none of the last sixteen consecutive F-bits has been errored, or when the DS3 framer updates the data
path frame counters. Multiframe alignment OOF is programmable (on or off).
A Severely Errored Frame (SEF) condition is declared when three or more out of the last sixteen consecutive F-bits
have been errored, or when a manual resynchronization is requested. An SEF condition is terminated when an
OOF condition is absent.
A Loss Of Frame (LOF) condition is declared by the LOF integration counter when it has been active for a total of T
ms. The LOF integration counter is active (increments count) when an OOF condition is present, it is inactive (holds
count) when an OOF condition is absent, and it is reset when an OOF condition is absent for T continuous ms. T is
programmable (0, 1, 2, or 3). An LOF condition is terminated when an OOF condition is absent for T continuous
ms.
A Change Of Frame Alignment (COFA) is declared when the DS3 framer updates the data path frame counters
with a frame alignment that is different from the current data path DS3 frame alignment.
A Loss Of Signal (LOS) condition is declared when the B3ZS encoder is active, and it declares an LOS condition.
An LOS condition is terminated when the B3ZS encoder is inactive, or it terminates an LOS condition.
An Alarm Indication Signal (AIS) is a DS3 signal with valid F-bits and M-bits. The X-bits (X
and X
) are set to one,
1
2
the P-bits (P
and P
) are set to zero, all C-bits (C
) are set to zero, and the payload bits are set to a 1010 pattern
1
2
XY
starting with a one immediately after each DS3 overhead bit. An AIS signal is present when a DS3 frame is
received with valid F-bits and M-bits, both X-bits set to one, bot P-bits set to zero, all C-bits set to zero, and all but
seven or fewer payload data bits matching the DS3 overhead aligned 1010 pattern. An AIS signal is absent when a
DS3 frame is received that does not meet the aforementioned criteria for an AIS signal being present. The AIS
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