2.0 Functional Description
CN8223
2.7 FIFO Port/UTOPIA Interface
ATM Transmitter/Receiver with UTOPIA Interface
Table 2-23. FIFO Interface Pin Connections (2 of 2)
CN8223
Function
FCTRL_OUT[7]
FCTRL_OUT[8]
FCTRL_OUT[9]
FCTRL_OUT[10]
FCTRL_OUT[11]
Port 3 Receive Cell Invalid Indication
Ports 0, 1, 2 Receive Cell Sync Marker
Port 3 Receive Cell Sync Marker
Receive FIFO Write Error or Receive Start of Cell
Transmit Cell Sync Marker
FCTRL_OUT[12](1)
FCTRL_OUT[13](1)
FCTRL_OUT[14](1)
Port 0 Transmit Data Read Strobe
Port 1 Transmit Data Read Strobe
Port 2 Transmit Data Read Strobe
FCTRL_OUT[15](1)
FCTRL_OUT[16]
Port 3 Transmit Data Read Strobe
Transmit PLCP Frame Sync Marker or Transmit Start of Cell
NOTE(S):
(1)
FIFO read strobes are forced inactive (high) during hardware or software resets.
Figure 2-16. Transmit FIFO Port Interface Timing, 53-Octet Mode
Port x Transmit
Data Read Strobe
Transmit Cell
Sync Marker
Transmit Start-
of-Cell Marker
Transmit Frame
Sync Marker
Port x Transmit
Data FIFO Empty
Transmit Data
56
4
5
•••
56
Octet
2-38
Conexant
100046C
CONEXANT [ CONEXANT SYSTEMS, INC ]
