S/UNI-IMA-4 Telecom Standard Product Data Sheet
Released
11.3 UTOPIA Interface Registers
These registers control the configuration of the UTOPIA interface.
Register 0x020: Transmit Any-PHY/UTOPIA Cell Available Enable
Bit
15:11
Type
R
Function
Unused
Default
0
10:0
R/W
TCAEN[10:0]
0
TCAEN[10:0]
The TCAEN[10:0] bits control the response to polling on the Any-PHY/UTOPIA Transmit
port. The TCAEN[10:0] bits can be used to select which group of 8 virtual PHY’s the
device should respond to. Only one bit should be set to enable a range of 8 addresses; for
example, setting TCAEN[0] enables addresses 0 through 7, setting TCAEN[9] enables
addresses 72 through 79, and setting TCAEN[10] enables addresses 80 through 83. If a
disabled PHY address is polled, TCA remains high impedance. Similarly, PHY selection is
ignored and no cell is transferred to the S/UNI-IMA-4 when a disabled PHY is addressed.
This is typically used to allow more than one slave device to share the Transmit UTOPIA
bus or to preserve addresses on the Any-PHY bus. Disabling all traffic to the Any-
PHY/UTOPIA input port is achieved by setting all TCAEN[10:0] bits to logic 0.
Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC-2020889, Issue 2
110
PMC [ PMC-SIERRA, INC ]
