參數(shù)資料
型號(hào): 28233-11
廠商: CONEXANT SYSTEMS
元件分類: 數(shù)字傳輸電路
英文描述: ATM Transmitter/Receiver with UTOPIA Interface
中文描述: TRANSCEIVER, PQFP160
封裝: PLASTIC, MQFP-160
文件頁數(shù): 39/161頁
文件大小: 1832K
代理商: 28233-11
CN8223
2.0 Functional Description
ATM Transmitter/Receiver with UTOPIA Interface
2.2 Line Framers
100046C
Conexant
2-5
2.2.1.1 High-Speed
PECL Transmit Interface
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.
Table 2-3
lists the interface connections for the internal framing mode without
line encoding.
Figure 2-4
illustrates the interface timing when the internal
B3ZS/HDB3 encoder is disabled.
Table 2-3. Internal Framing Unencoded Transmitter Connections (STS-3c, STM-1, E4)
Signal Name
Connect to CN8223 Pin
Transmit Clock Input (TXCKI)
TXCKI_HS±
Transmit Data (TXDATO)
TXOUT_HS±
Transmit Clock Output (TCLKO)
TCLKO_HS±
Figure 2-4. Internal Framer Transmitter Interface Timing Without Line Encoding
TCLKO
TXDATO
8
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