77V550S25DTG8 IDT, Integrated Device Technology Inc, 77V550S25DTG8 Datasheet - Page 11

• Manufacturer Part Number: 77V550S25DTG8
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of 77V550S25DTG8

• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (min): 3V
• Operating Supply Voltage (max): 3.6V
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 80
• Lead Free Status / RoHS Status: Compliant

IDT77V500 Switch Controller Manager Bus Commands
IDT77V500 Switch Controller Manager Bus Commands
ATM Cell Format
ATM Cell Format
of Receive Control Cells and Transmit Control Cells is shows in the Tables below.
change VCI address command it's possible to change the VCI[7:0] while VPI and VCI[15:8] is static 0x00, providing a total of 256 different addresses
to chose from. The same address is always used to both receive and transmit cells in the Switch Manager.
controlling host, and thus can be used to make a sliding window mechanism for the command cells.
VCI[7:0] can be changed by using the Change Switch Address command. The address of received and transmitted cells will always be the same.
IDT77V500 Switch Controller Manager Bus Commands
IDT77V500 Switch Controller Manager Bus Commands
IDT77V550
The Switch Manager can either interpret a cell received on port number 7 or generate a cell to send back to the external control logic. The format
At power up the VPI/VCI address of a signaling cell will be set to VPI = 0x00, VCI[5:8] = 0x00, and VCI[7:0] is by pins SWAD
The Command number field is returned in an acknowledge cell. This field can have an unique value for each consecutive command send by the
The VPI/VCI address of a transmitted cell will at power up be VPI = 0x00, VCI[15:8] = 0x00 and VCI[7:0] determined by pins SWAD
The HEC field will be generated by the PHY.
Note: 1.This table is provided as a reference of the available IDT77V500 Switch Controller commands. Additional information, including
command parameters and register definition, is available in the SwitchStar User's Manual, Section 3.
0
0-1
1-2
2-3
Byte
7-4
3-0; 7-4 VPI
3-0; 7-4 VCI 15-8
3-0; 7-4 VCI 7-0
Bits
GFC
Command
Table 11 IDT77V500 Switch Controller Manager Bus Commands (Part 1 of 2)
LDCFG
START
WRSL
PARM
RDSL
Field Name
STAT
WRV
WRL
RDV
SUP
CBR
RDL
INIT
SEL
Table 10 IDT77V500 Switch Controller Manager Bus Commands
Write Per VC Table
Read Per VC Table
Write Service Link Memory
Read Service Link Memory
Write Cell Link Memory
Read Cell Link Memory
Read IDT77V500 status
Load IDT77V400 configuration bits
Cell setup
Initialize IDT77V500
Select a IDT77V500
End of IDT77V500 Initialization
Set up a CBR Scheduler
Set Parameters of the IDT77V500
Command Description
0xX
0x00
0x00
0x00-0xFF
Value
11 of 19
Ignored by Switch Manager
Must be set to 0x00
Must be set to 0x00
Set by SWAD
0-7
or programmed in register
Code (In Hex)
Function
0A
0B
0C
0D
0E
01
02
03
04
05
06
07
08
09
(1)
(1)
(1)
(1)
June 22, 2001
0-7
. By using the
0-7
. The