82V2608BB IDT, Integrated Device Technology Inc, 82V2608BB Datasheet - Page 69

• Manufacturer Part Number: 82V2608BB
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of 82V2608BB

• Utopia Level: Level 2
• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (min): 2.97V
• Operating Supply Voltage (max): 3.63V
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Package Type: BGA
• Pin Count: 208
• Mounting: Surface Mount
• Lead Free Status / Rohs Status: Not Compliant

Table-50 Parameters for IMA Group Configuration
6
configured, started, inhibited, deleted and so on.
6.1
the device. If this command is not issued, the default value will be used.
Group ID
NE IMA ID
M for Tx (M
Acceptable M for Rx (M
Max delay compensation value (cells)
Version Backward Compatibility
TxUtopia port
RxUtopia port
Symmetry mode
Timing clock mode
Stuff mode
Stuff adv mode
Timer for GSM start up Ack
Timer for GSM Configure Abort
Timer for GSM to report Rx=active
Timer for GSM to report Tx=active
Tx TRL
Alpha
Beta
Gamma
P
P
All the Tx links’ physical IDs
All the Tx links’ logical IDs
All the Rx links’ physical IDs
All Tx links’ line interface Work Mode
All Rx links’ line interface Work Mode
All Tx links’ line interface clock mode
All Rx links’ line interface Work Mode
tx
rx
IDT82V2608
IMA OPERATION
This chapter is a brief introduction of how a group and links are
ConfigDev command is the first command to be issued to initialize
IMA OPERATION
IMA INITIALIZATION
tx
)
Parameter Name
rx
)
The physical group ID used for this IMA group.
The IMA group logical ID#.
The frame length that the NE Tx would like to use.
The frame length proposed by the FE Tx that the NE Rx can accept.
The maximum different link delay value a group is expected to have.
Whether IMA 1.0 is supported
The Utopia address where ATM traffic comes from
The Utopia address where ATM traffic goes
The group link’s configuration and operation mode.
The transmission timing clock mode.
The SICP insertion method.
The stuff pre-notify mode. Valid value is 1 or 4.
This is the timer for GSM to return from start-up Ack to start-up state when there is no response from the FE.
This is the timer for GSM to return from start-up Abort state to start-up state.
This is the timer for Group wide start-up procedure to report Rx=Active state.
This is the timer for Group wide start-up procedure to report Tx=Active state.
The transmit timing reference link. (Physical ID)
The number of consecutive invalid ICP cells for the IFSM state machine to exit SYNC state. Default value is 2.
The number of consecutive errored ICP cells for the IFSM state machine to exit SYNC state. Default value is 2.
The number of consecutive valid ICP cells for the IFSM state machine to enter SYNC state. Default value is 1.
The minimum number of active Tx links for the group to enter operational state
The minimum number of active Rx links for the group to enter operational state
The physical links’ ID used for transmission.
The logical link ID for each Tx link.
The physical links’ ID used for receiving.
The line interface Work Mode for each Tx link.
The line interface Work Mode for each Rx link.
The line interface clock mode for each Tx link.
The line interface clock mode for each Rx link.
69
6.2
group, links are assigned to that group and other parameters needed for
the group’s proper operation are set. The IMA ID should not be changed
during the whole life cycle of the group except that the group is
restarted.
ured.
After a group is configured, an ID (IMA ID) is allocated to a physical
CONFIGURE A GROUP
Table-50
Description
is the list of group parameters that should be config-
Inverse Multiplexing for ATM
December 4, 2006