PM7340 S/UNI-IMA-8
PRELIMINARY
INVERSE MULTIPLEXING OVER ATM
DATA SHEET
PMC-2001723
ISSUE 3
INVERSE MULTIPLEXING OVER ATM
11.3 UTOPIA Interface Registers
These registers control the configuration of the UTOPIA interface.
Register 0x020: Transmit Any-PHY/UTOPIA Cell Available Enable
Bit
Type
Function
Default
15:11
10:0
R
R/W
Unused
TCAEN[10:0]
0
0
TCAEN[3:0]:
The TCAEN[10:0] bits select which group of 8 addresses the device responds
to on the Any-PHY/UTOPIA Transmit port. The TCAEN[10:0] bits are used to
enable an address range. 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[3] enables addresses 24 through 31 and setting TCAEN[10]
enables address 80 through 87. Addresses 88 through 127 are not supported
on the Any-PHY bus. 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-8 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
111
PMC [ PMC-SIERRA, INC ]
