M7020R datasheet(21/150 Pages) STMICROELECTRONICS

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M7020R

REGISTERS

All registers in the M7020R are 68 bits wide. The

M7020R contains 8 pairs of comparand storage

registers, 16 pairs of global mask registers

(GMRs), eight search successful index registers

and one each of CMD, information, burst READ,

burst WRITE, and next-free address registers. Ta-

ble 8 provides an overview of all the M7020R reg-

isters. The registers are ordered in ascending

address order. Each register group is then de-

scribed in the following subsections.

Table 8. Register Overview

Address

Abbreviation

Type

Name

0–31

COMP0–31

16 Comparand Registers. Stores comparands from the DQ Bus for

learning later.

32–47

MASKS

8 Global Mask Registers Array.

48–55

SSR0–7

8 SEARCH Successful Index Registers.

COMMAND

Command Register.

INFO

Information Register.

RBURREG

Burst Read Register.

WBURREG

Burst Write Register.

NFA

Next Free Address Register.

61–63

–

Reserved

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