CN8223 Datasheet, PDF (24/161 Pages) Conexant Systems, Inc – ATM Transmitter/Receiver with UTOPIA Interface

1.0 Product Description
1.8 CN8223 Applications
CN8223
ATM Transmitter/Receiver with UTOPIA Interface
1.8 CN8223 Applications
The CN8223 can be connected to several types of framers and PMDs. Figure 1-6
illustrates a general application where the CN8223 is connected to either a CAT 5
or Fiber Optic PMD. Figure 1-7 illustrates an example implementation of the
CN8223 using a Bt8360 External T1 Framer.
Figure 1-6. CN8223 Connected to CAT 5 or PMD
UTOPIA
Tx Bus
UTOPIA
Rx Bus
CN8223
Control Bus
TxData ±
Loss of Signal
RxData ±
RxCLK ±
TxCLK ±
Clock Recovery
Circuit
(Analog Devices
AD6116)
OR
(Cypress
Semiconductor
CX7B952)
19.44 MHz
Oscillator
CAT 5 UTP
Pulse
Engineering
(PE-68532G or
PE-68538G)
OR
Raw RD ±
Fiber
Transceiver
Module
(Sumitomo
SDM 4201-XC)
Figure 1-7. CN8223 Connected to Bt8360
CN8223
Pin
ATM ^Cells
Layer
30 TXCKI
32
TXIN
36 _TXOUT[3]
10 _RXCKI
18 _RXIN[3]
15 RXIN[0]
19 RXIN[4]
Signal
TXCKI
TXSYI
TXDATO
RXCKI
RXSYI
RXDATI
RXLOS*
XBCKI
XCKI
XBSFSYO
XPCMI
SLSYI
Bt8360
Pin
29
43
27
30
50
Pin
7 _XPOSO
6 _XNEGO
8 _XCKO
Tx Data
Rx Data
Tx
LIU
RCKO/SLCKI
37/49 63 RPOSI
RFSYO/SLFSYO 38/41 _{62 RNEGI}
Rx
RPCMO/SLPCMO 36/55
61
RCKI ^Derived
Tx Clock
System Clock
1-14
Conexant
100046C