參數(shù)資料
型號: IDT82V2616BBG
廠商: IDT, Integrated Device Technology Inc
文件頁數(shù): 11/99頁
文件大小: 0K
描述: IC INVERSE MUX 16CH ATM 272-PBGA
標(biāo)準(zhǔn)包裝: 1
應(yīng)用: 無線
接口: Utopia
電源電壓: 2.97 V ~ 3.63 V
封裝/外殼: 260-BGA
供應(yīng)商設(shè)備封裝: 260-PBGA(19x19)
包裝: 托盤
安裝類型: 表面貼裝
其它名稱: 82V2616BBG
INTERFACE
19
December 4, 2006
IDT82V2616
Inverse Multiplexing for ATM
3INTERFACE
3.1
UTOPIA INTERFACE
The Utopia interface operates in Level 2 mode. The IDT82V2616
supports up to 16 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.
Each IMA group or UNI link corresponds to a port. For each IMA
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.
The IDT82V2616 uses cell level handshake for cell transfer. One
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.
3.1.1
UTOPIA LOOPBACK FUNCTION
For diagnostic purpose, the capability to loop back all Utopia traffic to
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.
Figure-3 Utopia Loopback
UTOPIA Interface
Tx
Group
Cell
FIFO 1
Rx
Group
Cell
FIFO 1
Tx
Group
Cell
FIFO 0
Rx
Group
Cell
FIFO 0
……
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