IDT77V500S25BCG8 IDT, Integrated Device Technology Inc, IDT77V500S25BCG8 Datasheet - Page 2

• Manufacturer Part Number: IDT77V500S25BCG8
• Description: IC SW MEMORY 8X8 1.2BGPS 144-BGA
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of IDT77V500S25BCG8

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 77V500S25BCG8

track of each call, and has the capacity to keep track of as many as 8192
individual VC queues. There are four possible priorities available for
each of the assigned outputs of the Switching Memory, and CBR, VBR,
UBR, and ABR-EFCI service classes are supported by the Switch
Controller. Multicasting and broadcasting services are provided,
requiring only the appropriate header information to execute these oper-
ations automatically without requiring multiple Switching Memory
entries.
packetized data, enabling easy transition between packet oriented
networks such as Ethernet and FDDI and ATM cell oriented networks.
The IDT77V500 has an 8-bit Manager Bus interface, MDATA0-7, to a
Call Setup Manager processor for the configuration activity and call
Functional Block Diagram
Functional Block Diagram
Functional Block Diagram
Functional Block Diagram
1
2
IDT77V500
SCLK and Reset are inputs to all blocks.
Outputs are always enabled (active).
The IDT77V500 utilizes Per Virtual Connection (VC) Queuing to keep
The IDT77V500 also has a mode for managing and transmitting
MDATA0-7
CBRCLK3
CBRCLK2
OFRM0-7
RESETI
MSTRB
MR/W
SCLK
MD/C
Arbitration
Manager
Control
Output
Service
Logic
Setup
Call
and
IOD0-31
Switching Memory Interface
32
SCLK
Reset
2 of 17
1
1
CMD0-5
6
setup operation. When a Call Setup Cell is received by the IDT77V400,
the cell is directed to a specified output port and the payload processed
by the Call Setup Manager. The new Virtual Connection (VC) is then
established in the Queue Manager of the IDT77V500, with all operations
executed across the 8-bit Manager Bus. Subsequent cells of that partic-
ular VC are then prioritized and directed by the Switch Controller as they
are received by the IDT77V400; no further interaction with the Call
Manager processor is required for ongoing queue and cell management.
and configurations of the IDT77V400 Switching Memory. Please refer to
the SwitchStar User Manual for additional feature details and implemen-
tation information.
an 100-pin Thin Plastic Quad Flatpack (TQFP) and an 144-ball BGA.
The IDT77V500 supports a major subset of the available commands
The IDT77V500 is fully 3.3V LVTTL compatible, and is packaged in
2
Queue Manager
Output Queues
Link Registers
Machine
CRCERR
State
and
3607 drw 02
SFRM
RESETO
2
April 11, 2001
2