MT90222AG Zarlink Semiconductor, MT90222AG Datasheet - Page 66
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MT90222AG
Manufacturer Part Number
MT90222AG
Description
Description = 4 Port Ima & TC PHY For T1, E1 And DSL ;; Package Type = N/a ;; No. Of Pins =
Manufacturer
Zarlink Semiconductor
Datasheet
1.MT90222AG.pdf
(155 pages)
- Current page: 66 of 155
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Figure 17 illustrates the implementation of a mixed mode using only 1 MT90224. Links that are not used for IMA
Groups are available in TC mode. Unused links are programmed to set their outputs to high impedance mode.
6.0
6.1
The MT90222/3/4 includes 224 24-bit counters to provide statistical information on the device’s operation. All the
counters are cleared by a hardware reset. A maskable interrupt can be generated when the counter overflows.
Counters can also be latched to capture the state of all registers at once.
A predetermined value can also be loaded into a counter. This feature can be used to generate an interrupt after a
specified number of cells is processed. Counter values are incremented by 1 for every event occurrence and, when
the count reaches all 1’s, will overflow (to all 0’s).
6.1.1
There are four counters associated with the each of the 24 UTOPIA Inputs (from ATM layer to the MT90222/3/4) for
a total of 96 counters. These counters record the following information:
•
•
•
•
6.1.2
There are four counters associated with the each of the sixteen transmit TDM links for a total of 64 Transmit counters.
These counters record the following information:
•
•
•
•
the total number of cells or the total number of user cells received at the UTOPIA Input I/F
the total number of Idle Cells received at the UTOPIA Input I/F, removed or not
the total number of Unassigned Cells received at the UTOPIA Input I/F, removed or not
the number of cells having a single or multiple bit error in the HEC, removed or not but not including the cells
where the HEC is corrected
the total number of cells sent through the TDM link
the total number of Idle/Filler cells or the total number of user cells sent through the TDM link
the total number of Stuff cells sent through the TDM link
the total number of ICP cells sent through the TDM link
Device
ATM
Layer
Counter Block
Support Blocks
UTOPIA Input I/F counters
Transmit TDM I/F Counters
Figure 17 - ATM Mixed-Mode Interface to One MT90224
3 UTOPIA Ports
1 UTOPIA Port
1 UTOPIA Port
(IMA Group #1)
(IMA Group #2)
(TC)
Zarlink Semiconductor Inc.
MT90222/3/4
(3 Links in TC Mode)
66
(5 links)
(8 links)
16
Data Sheet
Framer
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