PM5380-BI PMC-Sierra, Inc., PM5380-BI Datasheet - Page 326

• Manufacturer Part Number: PM5380-BI
• Description: Network Interface, SATURN User Network Interface (8x155) Telecom Standard Product
• Manufacturer: PMC-Sierra, Inc.

Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC- 2010299, Issue 2
L3MODE:
Reserved:
When L3MODEINV is high and POS_ATMB is low, the S/UNI-8x155 implements a
receive POS-PHY Level 3 interface. When L3MODEINV is high and POS_ATMB is high,
the S/UNI-8x155 implements a receive UTOPIA Level 3 interface. When L3MODEINV is
low, the POS_ATMB input operates normally.
The L3MODE register bit reflects the polarity of the POS_ATMB input. When the
POS_ATMB input is low, the L3MODE register bit is low. When the POS_ATMB input is
high, the L3MODE register bit is high.
When L3MODE is low, the S/UNI-8x155 is configured for UTOPIA Level 3 operation.
When L3MODE is high, the S/UNI-8x155 is configured for POS-PHY Level 3 operation.
The reserved bit must be programmed to zero for proper operation.
S/UNI®-8x155 ASSP Telecom Standard Product Data Sheet
Released
326