82V2608BB IDT, Integrated Device Technology Inc, 82V2608BB Datasheet - Page 18

• 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

3
3.1
supports up to 8 Utopia Level 2 ports. Each port is assigned an address
ranging from 0 to 30. The address value of 31 is reserved and should
not be used. All the 31 ports can be individually enabled or disabled by
ConfigUtopiaIF command.
group, the port address can be assigned by ConfigGroupInterface
command. For each UNI link, the port address can be assigned by
ConfigUNILink command. Inside the device, each port corresponds to
a GCF (Group Cell FIFO) which is 2 cells deep.
entire cell is transferred before another port can be selected. The start of
a cell is marked by TxSOC and RxSOC signals in the transmit and the
receive directions respectively. These two signals are active during the
first byte of a cell.
IDT82V2608
INTERFACE
The Utopia interface operates in Level 2 mode. The IDT82V2608
Each IMA group or UNI link corresponds to a port. For each IMA
The IDT82V2608 uses cell level handshake for cell transfer. One
INTERFACE
UTOPIA INTERFACE
18
3.1.1
Utopia bus is provided. This loopback is called Utopia loopback and can
be enabled by ConfigLoopMode command. In this mode, cells are
taken from TGCFs (Transmit Group Cell FIFO) and sent to the respec-
tive RGCFs (Receive Group Cell FIFO). When in Utopia loopback mode,
cells will not be transmitted to the line interface. Refer to Figure-3.
For diagnostic purpose, the capability to loop back all Utopia traffic to
FIFO 0
Group
UTOPIA LOOPBACK FUNCTION
Cell
Tx
FIFO 1
Figure-3 Utopia Loopback
Group
Cell
Tx
UTOPIA Interface
……
Inverse Multiplexing for ATM
FIFO 1
Group
Cell
December 4, 2006
Rx
FIFO 0
Group
Cell
Rx