mt90224 Zarlink Semiconductor, mt90224 Datasheet - Page 87

• Manufacturer Part Number: mt90224
• Description: 8-port Ima/tc Phy Device
• Manufacturer: Zarlink Semiconductor

Address (Hex):
Direct access
Reset Value (Hex):
Address (Hex):
Direct access
Reset Value (Hex):
Address (Hex):
Direct access
Reset Value (Hex):
Bit #
Bit #
Bit #
15:8
15:8
7:0
7:4
3:0
3
2
1
0
Type
R/W
R/W
R/W
R/W
Type
Type
R/W
R/W
R/W
R
R
A value of 1 means that the Unassigned and Idle cells are discarded upon reception for the
link N.
A value of 1 enables the discard option of the cells with wrong HEC. A value of 0 will
disables the discard option, all the cells will be written to the receive buffer.
A value of 1signifies that the ATM Forum polynomial value (coset) is not to be added to the
HEC before the verification. A value of 0 means that the HEC as per ATM Forum is
calculated and compared (i.e., including the coset).
A value of 1 enables the correction of the cells with a wrong HEC. A value of 0 disable the
correction of the HEC.
Unused, Read all 0’s.
DELTA parameter value for the Cell Delineation register. The number of consecutive cells
with correct HEC to leave the PRESYNC state to go to the SYNC state. The default value
is 6.
ALPHA parameter value for the Cell Delineation register. The number of consecutive cells
with incorrect HEC to leave the SYNC state to go to the HUNT state. The default value is
7.
Unused. Read all 0’s.
Contains the number of consecutive cell periods that the CD circuit will count before the
incoming ATM cell stream to be considered in LCD state. Each count will be done on a
cell by cell basis. The value of this register is multiplied by 2 before being loaded in the
internal counter. (The internal counter value can be from 2 to 510).
Note that a value of 0 is not allowed as an LCD condition would be generated.
1 register per 2 links. Link 0 is paired with link 8, link 1 with link 9 and so on.
0C0C
0x00C9 (1 reg)
1 register for all 16 cell delineation state machines
0067
0x00C8 (1 reg)
1 reg. for all 16 cell delineation state machines.
000C
0x00C0 - 0x00C7 (8 reg)
Table 26 - RX Link Control Registers (continued)
Table 27 - Loss of Delineation Register
Table 28 - Cell Delineation Register
Zarlink Semiconductor Inc.
MT90222/3/4
87
Description
Description
Description
Data Sheet