TNETV2501INPGF datasheet(112/197 Pages) TI1

112 / 197 page

Functional Overview

112

December 2002 − Revised November 2008

SPRS206K

3.13.4

System Configuration Register (CONFIG)

The System Configuration Register can be used to determine the operational state of the ICACHE. If the

ICACHE is not functioning, the CACHEPRES bit of the CONFIG register will be cleared. If the ICACHE is

functioning normally, this bit will be set.

The System Configuration Register bit layout is shown in Figure 3−49 and the bits are described in Table 3−53.

Reserved

R, 10000010

Reserved

CACHEPRES

Reserved

R, 00

R, 0

RW, 0†

R, 0000

LEGEND: R = Read, W = Write, n = value at reset

† This Reserved bit must be kept as zero during any writes to CONFIG.

Figure 3−49. System Configuration Register Layout (0x07FD)

Table 3−53. System Configuration Register Bit Field Description

BIT NAME

BIT NO.

ACCESS

RESET VALUE

DESCRIPTION

Reserved

15−6

1000001000

Reserved

CACHEPRES

ICACHE present

CACHEPRES = 0: ICACHE is not functioning

CACHEPRES = 1: ICACHE is enabled and working

Reserved

R/W

0†

Reserved

3−0

0000

Reserved

† This Reserved bit must be kept as zero during any writes to CONFIG.

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