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KE5BLME008

Longest Match Engine

KAWASAKI MICROELECTRONICS 

Kawasaki LSI

8K Longest Match Search Engine (KE5BLME008)

PRELIMINARY

3.3. Pin Description

Pin Name

CLK

SRCHN

INP<31:0>

OUT<15:0>

OEN

ODONEN

HON

MLE<4:0>

MLOEN

MDONEN

RSTN

IRQN

CCMPN

Attribute

Clock

Input

LVTTL

Search Enable

Input

LVTTL

Input Bus

Input

LVTTL

Output Bus

Output

LVTTL

Output Enable

Input

LVTTL

Output DONE

Output

LVTTL

Hit Output

Output

LVTTL

Match Length

Output

LVTTL

Match Length Output Enable

Input

LVTTL

MLE Done

Output

LVTTL

Reset

Input

LVTTL

Interrupt Request

Output

Open Drain

Command Execution

Completion

Output

LVTTL

Description

# of Pins

CLK is the master clock input. Input 1

signals refer to the rising edge of CLK.

SRCHN enables a search operation; 1

search commences when Low is

signaled.

INP<31:0> is a 32-bit input bus used 32

for search key inputs.

OUT<15:0>, a 16-bit output bus,

16

outputs the associate data.

OEN controls OUT<15:0>. OEN Low 1

enables OUT<15:0> ; and OEN High

enables High-Z.

ODONEN Low Active indicates that 1

the associate data is output to the OUT

<15:0> after a search.

HON outputs a search result.

1

Low indicates a hit; High indicates a

miss hit.

MLE outputs match-length

5

information (prefix lengh-1) between

the data stored in the table and the

relevant search key.

MLOEN controls MLE<4:0> Output 1

Enable. Low enables MLE<4:0>;

High changes it to High-Z.

MDONEN Low indicates that the

1

completion of the search, outputting

the match length to MLE<4:0>.

RSTN input Low resets the hardware. 1

IRQN indicates Low when an interrupt 1

condition occurs in the CNTL register.

CCMPN signals High during the

1

command operation executed via CPU

port, and signals Low upon the

completion of its execution.

Version1.0.1

Proprietary and Confidential

6

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