XRT83SL216IB View Datasheet(PDF) - Exar Corporation
Part Name
Description
MFG CO.
'XRT83SL216IB' PDF : 41 Pages View PDF
XRT83SL216
REV. 1.0.0
16-CHANNEL E1 SHORT-HAUL LINE INTERFACE UNIT
2.4 TAOS (Transmit All Ones)
The XRT83SL216 has the ability to transmit all ones on a per channel basis by programming the appropriate
channel register. If TAOS is enabled, the Transmitter outputs will generate an All Ones pattern regardless of
the Transmit Input data. The Remote Loop Back mode has priority over TAOS. Figure 13 is a diagram showing
the all ones signal at TTIP and TRING.
FIGURE 13. TAOS (TRANSMIT ALL ONES)
TAOS
1
1
1
2.5 ATAOS (Automatic Transmit All Ones)
ATAOS is used to generate an All Ones signal only when an RLOS condition occurs. If ATAOS is enabled, any
channel that experiences an RLOS condition will automatically cause the transmitter on that channel to send
an All Ones Pattern to the line using MCLK as reference. When RLOS clears, the All Ones pattern ends and
the Transmit path returns to normal operation.
FIGURE 14. SIMPLIFIED BLOCK DIAGRAM OF THE ATAOS FUNCTION
TTIP
Tx
TRING
All "1's"
Generator
Timing derived
from MCLK
ATAOS
RLOS
21
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