VSC7440 datasheet(77/444 Pages) MICROSEMI

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Functional Descriptions

VMDS-10492 VSC7440 Datasheet Revision 4.2

3.12.3.1 VCAP CLM

The following table lists the parameters that apply to the VCAP CLM.

The type-group field must be inserted into entries when programming rules, because the VCAP CLM

supports more than one entry size.

The type-group field must be inserted into actions when programming rules, because the VCAP CLM

supports more than one action size.

Table 40 •

VCAP CLM Parameters

Parameter

Description

Number of VCAP addresses

1,024 per block that is allocated to this VCAP

Width of entry

36 bits per address

Width of action

70 bits per address

Counter type

1 bit saturating counter

Supported entry sizes

X1, X2, X4, X8, and X16

Supported action sizes

X1, X2, X4

Associated register target

VCAP_SUPER

Table 41 •

VCAP CLM Entry Type-Group Fields

Address Offset

Size

Entry Type Group

Description

0b1

Software must insert 1 bit with the value 1 into first

address of all X1 entries.

0b10

Software must insert 2 bit with the value 2 into first

address of all X2 entries.

0b100

Software must insert 3 bit with the value 4 into first

address of all X4 entries.

0b1000

Software must insert 4 bit with the value 8 into first

address of all X8 entries.

X16

0b10000

Software must insert 5 bit with the value 16 into first

address of all X16 entries.

1, 3, 5, 7, 9, 11, 13, and 15

0b0

Software must insert 1 bit with the value 0 into

uneven addresses of all entries.

2, 6, 10, and 14

0b00

Software must insert 2 bit with the value 0 into

addresses 2, 6, 10, and 14 of all entries.

4 and 12

0b000

Software must insert 3 bit with the value 0 into

addresses 4 and 12 of all entries.

0b0000

Software must insert 4 bit with the value 0 into

addresses 8 of all entries.

Table 42 •

VCAP CLM Action Type-Group Fields

Address Offset

Size

Action Type Group

Description

0b1

Software must insert 1 bit with the value 1 into first

address of all X1 actions.

0b10

Software must insert 2 bit with the value 2 into first

address of all X2 actions.

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