ZL30226/GA ZARLINK [Zarlink Semiconductor Inc], ZL30226/GA Datasheet - Page 31

• Manufacturer Part Number: ZL30226/GA
• Description: 4/8/16 Port IMA/TC PHY Device for xDSL
• Manufacturer: ZARLINK [Zarlink Semiconductor Inc]

1.0
The ZL30226/7/8, supported by software, implements the ATM Forum Inverse Multiplexing for Asynchronous
Transfer Mode (IMA) Specification. Actions are implemented by the ZL30226/7/8 and decisions are made by the
software. This approach minimizes the impact of any changes that might occur in the specification.
The ZL30226/7/8 supports the following two major modes of operation:
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•
Up to eight IMA Groups can be implemented (4 groups - 0,1,2,3 for ZL30226). Any of the available serial (TDM)
interfaces can be assigned dynamically to any of these IMA Groups. A different UTOPIA PHY address is assigned
to each of the IMA Groups
For ZL30226 groups 0, 1, 2 and 3 should be used.
The TC mode is used to transfer the cells from the UTOPIA Interface to a serial (TDM) port without any overhead.
Up to 16 UTOPIA PHY addresses can be supported in TC mode (one per serial port).
The ZL30226/7/8 also supports a mixed mode where the TDM Interfaces not assigned to an IMA Group can be used
in TC mode.
The IMA implementation is divided into hardware and software functions. The ZL30226/7/8 implements the hardware
functions. The software functions are implemented by the user or Zarlink IMA Core. The hardware and software
functions are described below. Notice that a number of ZL30226/7/8 functions are included to assist in the collection
of statistical information. This information supports the MIB implementation.
1.1
For the ZL30226/7/8 to comply with the IMA specification, the following functions must be implemented by software:
•
•
•
•
ZL30228 Pin Description (continued)
V25,W26,W23,
R25,T25,U26,
N26,M25,L26,
H24,G23,F23,
D26,D25,B24,
C22,C21,A21,
K26,J26,J24,
AC21,AD20,
AD19,AD18,
AB24,AD26,
AF18,AD16
Y24,AA24,
the IMA mode (as defined by the ATM Forum IMA Specification), both version 1.0 and 1.1
the Transmission Convergence (TC) mode.
the transmit and receive Link State Machines (LSM)
the IMA Group State Machines (GSM)
the IMA Group Traffic State Machines (GTSM)
the Operations and Maintenance (OAM) functions
Pin #
A20
Software Functions
Device Architecture
Name
PD
IC
I/O
I
Pull-down. Connect to VSS via a high value resistor, e.g., 10 k ohm.
Internal Connection. Connect directly VSS.
Zarlink Semiconductor Inc.
ZL30226/7/8
31
Description
Data Sheet