參數(shù)資料
型號(hào): 28222-14
廠商: Conexant Systems, Inc.
英文描述: ATM Transmitter/Receiver with UTOPIA Interface
中文描述: 自動(dòng)柜員機(jī)發(fā)射機(jī)/接收機(jī)的UTOPIA接口
文件頁數(shù): 38/161頁
文件大?。?/td> 1832K
代理商: 28222-14
2.0 Functional Description
CN8223
2.2 Line Framers
ATM Transmitter/Receiver with UTOPIA Interface
2-4
Conexant
100046C
2.2.1 Internally Framed Transmit Line Interface
In internal framer mode, the transmitter provides positive and negative pulse
indications and a transmit output clock to an external Line Interface Unit (LIU)
(or output clock and NRZ serial data if internal B3ZS/HDB3 encoding is
disabled) in response to a transmit input clock.
Table 2-2
gives the internal framing mode interface connections. The
functional timing for the transmit line interface is similar for all internal framer
modes.
Figure 2-3
illustrates the interface timing when the internal B3ZS/HDB3
encoder is enabled. The TCLKO phase shown can be inverted with Invert TX
Clock Output [bit 7] of the CONFIG_3 register [0x02].
Table 2-2. Internal Framer Transmitter Interface Connections
Signal Name
Connect to CN8223 Pin
Transmit Clock Input (TXCKI)
TXCKI
Transmit Clock Output (TCLKO)
TCLKO
Transmit Positive Data (TXPOS)
TXOUT[1]
Transmit Negative Data (TXNEG)
TXOUT[2]
Figure 2-3. Internal Framer Transmitter Interface Timing with Line Encoding
TCLKO
TXPOS
TXNEG
8
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