cn8223 Mindspeed Technologies, cn8223 Datasheet - Page 39
cn8223
Manufacturer Part Number
cn8223
Description
Atm Transmitter/receiver With Utopia Interface
Manufacturer
Mindspeed Technologies
Datasheet
1.CN8223.pdf
(161 pages)
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CN8223
ATM Transmitter/Receiver with UTOPIA Interface
Figure 2-4. Internal Framer Transmitter Interface Timing Without Line Encoding
100046D
PECL Transmit Interface
2.2.1.1 High-Speed
TXDATO
TCLKO
For STS-3c, STM-1, or E4, the high-speed PECL interface is used. This mode is
used in any case where an external LIU/decoder is used (such as E4 and
STS-3c/STM-1 CMI decoding). If the mode is set to E4 or STS-3c/STM-1 in
CONFIG_1, then the outputs are taken from the “HS±” versions of the output
pins. The TCLKO (and TCLKO_HS±) phase shown can be inverted with the
Invert TX Clock Output control bit.
line encoding.
B3ZS/HDB3 encoder is disabled.
Table 2-3. Internal Framing Unencoded Transmitter Connections (STS-3c, STM-1, E4)
Transmit Clock Input (TXCKI)
Transmit Data (TXDATO)
Transmit Clock Output (TCLKO)
Table 2-3
lists the interface connections for the internal framing mode without
Signal Name
Figure 2-4
Conexant
illustrates the interface timing when the internal
TXCKI_HS±
TCLKO_HS±
TXOUT_HS±
Connect to CN8223 Pin
2.0 Functional Description
2.2 Line Framers
2-5
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