Keywords: ultramapper, ultraframer, transmux, clear channel, map/demap, T3, E3, line interface units, t3 e3, LIUs, trans mux
|Table 1. Agere Ultramapper DS3/E3 Bipolar/Unipolar Control Bits|
|Block Name||Register Name||Address||Description|
|SPEMPR||SPEMPR_TDS3_BIPOLAR||0x19 ||Transmit DS3/E3 Bipolar/Unipolar. Note this is valid only if register 0x0018 [13:12] = 11.|
|SPEMPR||SPEMPR_RDS3_BIPOLAR||0x19 ||Receive DS3/E3 Bipolar/Unipolar. Note this is valid only if register 0x0018 [5:4] = 11.|
|DS3DJA||DS3DJA_DS3_BIPOLAR||0x15 [5:0]||Per Channel Control Bit
1: HBD3 or B3ZS.
|DS3DJA||DS3DJA_DS3_B3ZS||0x14 [5:0]||Per Channel Control Bit
1: B3ZS coding.
0: HDB3 coding.
|M13||M13_BIPOLAR||0x5D ||1: B3ZS encoding/decoding, i.e., DS3 I/O is in dual-rail mode where each rail carries a
polarity of a bipolar I/O.
0: DS3 I/O is a single-rail, unencoded NRZ signal.
|E13||E13_TE3_BIPOLAR||0x23 ||1: E3 output is HDB3 encoded and dual-rail.
0: E3 output is single-rail unencoded.
|E13||E13_RE3_IN_CTL||0x26 [5:4]||00: HDB3 decode disabled (input data on positive rail only).
01: HDB3 decoder enabled, input on P/N rails.
10: HDB3 decoder disabled (input data on positive rail only).
11: HDB3 decoder disabled, negative input rail carries HDB3 error count from external LIU.
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