IDT77V400 Integrated Device Technology, IDT77V400 Datasheet - Page 27

• Manufacturer Part Number: IDT77V400
• Description: 1.24 Gbps Switching Memory **not Recommended For New Designs**
• Manufacturer: Integrated Device Technology

Configuration 1
Rx TAG
TAG byte 3
TAG byte 2
TAG byte 1
TAG byte 0
Configuration 1
Tx TAG
IDT77V011
8001
8005
8016
8017
8018
8019
8001
8004
2
[2:0]
3
4
[7:0]
[7:0]
[7:0]
[7:0]
1
3
[2:0]
3
4
Rx Move
PT/CLP
Rx Tag Size
[2:0]
Rx Remove
HEC
Rx TAG
Location
TAG [31:24]
TAG [23:16]
TAG [17:8]
TAG [7:0]
Copy EFCI
Tx Move
PT/CLP
Tx TAG Size
Tx Add HEC
Tx TAG
Location
0 - 1
0 - 4
0 - 1
0 - 1
0x00 - 0xFF
0x00 - 0xFF
0x00 - 0xFF
0x00 - 0xFF
0 - 1
0 - 1
0x0 - 0x4
0 - 1
0 - 1
Table 17 Transmit Tag Register Table
Table 16 Receive Tag Register Table
Defined by pin
0
0
Defined by pin
Defined by pin
0x00
0x00
0x00
0x00
0
Defined by pin
Defined by pin
Defined by pin
27 of 43
Selects whether or not to move the PT/CLP fields from the cell header
into the 4-byte TAG area appended to the beginning of the cell. This
option is not valid when the TAG is appended to the end of the cell. "0"
do not move the PT/CLP to the 4-byte TAG area, "1" move the PT/CLP
to the 4-byte TAG area.
Number of bytes to add to ATM cell in the receive direction. Valid val-
ues are from zero to four.
Remove HEC byte from cell. "0" do not remove the HEC byte from the
cell, "1" remove the HEC byte from the cell.
beginning of the cell, "1" receive TAG is located at the end of the cell.
TAG added to cell.
Selects whether or not to OR the EFCI bit of the cell header with the
EFCI bit of the 4-byte TAG area appended to the beginning of the cell,
and place the OR'ed EFCI bit in the cell header. This option is not valid
when the TAG is appended to the end of the cell. "0" do not OR the
EFCI bit to the 4-byte TAG area, "1" OR the EFCI bit to the 4-byte TAG
area.
Selects whether or not to move the PT/CLP fields from the 4-byte TAG
area appended to the beginning of the cell into the cell header. This
option is not valid when the TAG is appended to the end of the cell. "0"
do not move the PT/CLP fields to the cell header, "1" move the PT/
CLP fields to the cell header.
Valid values are from zero to four.
Add a HEC placeholder in the transmit direction. "0" do not add a HEC
placeholder, "1" add a HEC placeholder.
beginning of the cell, "1" transmit TAG is located at the end of the cell.
TAG location in receive direction. "0" receive TAG is located at the
TAG added to cell.
TAG added to cell.
TAG added to cell.
Number of bytes to remove from the ATM cell in the transmit direction.
TAG location in transmit direction. "0" transmit TAG is located at the
March 15, 2001