BT8222EPFF CONEXANT [Conexant Systems, Inc], BT8222EPFF Datasheet - Page 38

• Manufacturer Part Number: BT8222EPFF
• Description: ATM Transmitter/Receiver with UTOPIA Interface
• Manufacturer: CONEXANT [Conexant Systems, Inc]

2.0 Functional Description
2.2 Line Framers
2.2.1 Internally Framed Transmit Line Interface
Figure 2-3. Internal Framer Transmitter Interface Timing with Line Encoding
2-4
TXPOS
TXNEG
TCLKO
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.
functional timing for the transmit line interface is similar for all internal framer
modes.
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
Transmit Clock Input (TXCKI)
Transmit Clock Output (TCLKO)
Transmit Positive Data (TXPOS)
Transmit Negative Data (TXNEG)
Table 2-2
Figure 2-3
gives the internal framing mode interface connections. The
Signal Name
illustrates the interface timing when the internal B3ZS/HDB3
Conexant
ATM Transmitter/Receiver with UTOPIA Interface
TXCKI
TCLKO
TXOUT[1]
TXOUT[2]
Connect to CN8223 Pin
100046C
CN8223