PXF4336 Datasheet, PDF (169/425 Pages) Infineon Technologies AG – ABM Premium ATM Buf fer Manager

ABM-P
PXF 4336 V1.1
Interface Description
5.2
UTOPIA L2 Interface (Backplane side)
5.2.1 URXD: UTOPIA Receive Downstream (Backplane side)
The UTOPIA Receive Downstream Interface is identical to the UTOPIA Receive
Upstream Interface as described in Chapter 5.1.1.
Standard Exceeding UTOPIA Feature
To support system architectures that require a bandwidth overprovisioning from the
backplane, the URXD can be operated up to 60 MHz which corresponds to a data rate
of 795 Mbit/s received from the backplane. This provides an overprovisioning factor of
1.32 to OC12 data rate on the line side as described in Chapter 3.1.1.
5.2.2 UTXU: UTOPIA Transmit Upstream (Backplane side)
The UTOPIA Transmit Upstream Interface is identical to the UTOPIA Transmit
Downstream Interface as described in Chapter 5.1.2.
5.2.3 UTOPIA Port/Address Mapping (Backplane side)
The UTOPIA Port/Address mapping (Backplane side) is identical to the UTOPIA Port/
Address Mapping as described in Chapter 5.1.3.
5.2.4 Functional UTOPIA Timing (Backplane side)
The functional timing is compatible to ATMF UTOPIA Level 2 standard [4] and ATMF
UTOPIA Level 1 standard [3] respectively.
Remark 1
The ABM-P UTOPIA Interfaces in master mode always introduce at least 1 idle clock
between transmission or reception of subsequent ATM cells.
Remark 2
The ABM-P UTOPIA Interfaces in Level 1 Slave Mode do not support constant active
enable signals UTXENBi/URXENBi (i = {D(Downstream); U(Upstream)}).
The enable signals must be deasserted with each cell cycle.
5.2.5 UTOPIA Master Mode Polling Scheme (Backplane side)
The UTOPIA Polling scheme (Backplane side) is identical to the UTOPIA Polling scheme
as described in Chapter 5.1.5.
Data Sheet
169
2001-12-17