1.0 Product Description
CN8223
1.8 CN8223 Applications
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
TxData
CAT 5 UTP
Pulse
Engineering
UTOPIA
Tx Bus
Loss of Signal
(PE-68532G or
PE-68538G)
OR
CN8223
RxData
Fiber
Transceiver
Module
UTOPIA
Rx Bus
Raw RD
RxCLK
TxCLK
Clock Recovery
Circuit
(Sumitomo
SDM 4201-XC)
(Analog Devices
AD6116)
OR
(Cypress
Control Bus
Semiconductor
CX7B952)
19.44 MHz
Oscillator
Figure 1-7. CN8223 Connected to Bt8360
CN8223
Signal
Bt8360
Tx Data
Pin
29
43
Pin
7
Pin
Tx
XBCKI
XPOSO
TXCKI
30
32
36
TXCKI
XCKI
6
8
XNEGO
XCKO
TXSYI
27
30
TXIN
XBSFSYO
XPCMI
TXDATO
Cells
TXOUT[3]
ATM
Layer
LIU
50
SLSYI
Rx Data
RXCKI
10
18
15
19
RCKO/SLCKI
RXCKI
RXIN[3]
RXIN[0]
RXIN[4]
63
62
61
RPOSI
RNEGI
RCKI
37/49
38/41
RXSYI
Rx
RFSYO/SLFSYO
RXDATI
RPCMO/SLPCMO 36/55
Derived
Tx Clock
RXLOS*
System Clock
1-14
Conexant
100046C
CONEXANT [ CONEXANT SYSTEMS, INC ]
