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S/UNI-QUAD
PMC-Sierra, Inc.
PM5349 S/UNI-QUAD
DATASHEET
PMC-971239 ISSUE 6 SATURN USER NETWORK INTERFACE (155-QUAD)
Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
222
13.11
Initializing the S/UNI-QUAD
The S/UNI-QUAD defaults to the Asynchronous Transfer Mode (ATM) operation
but it is recommended to implement the following initialization sequence.
1.
Reset the device. This can be done by asserting the RSTB pin or setting the
RESET bit in the Master Reset and ID Register (Register 00).
2.
Set the TPOP Path Signal Label (Register 0x48 ) to 0x13, which indicates an
ATM payload.
3.
For every channel, reset all the Rx and Tx ATM FIFO’s by setting the
FIFORST register bit in the TXCP and RXCP blocks. Keep this bit set for at
least 1 µs, then set the bit back to its inactive logic zero value.
4.
For every channel, reset the performance monitoring counters in TXCP and
RXCP blocks, and preferably in all the blocks. The easiest way to do this is to
use the TIP register bit.
13.12
Using the S/UNI-QUAD with a 5 Volt ODL
The S/UNI-QUAD defaults to a 3.3V PECL optical data link (ODL) module
interface. It can also be used with a 5V ODL. This is accomplished by setting to
logic 1 the PECLV bit located in the Master Configuration Register (Register
0x01). Notice that all four channels are reconfigured.