AT91 datasheet(94/153 Pages) ATMEL

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AT91X40 Series

1354D–ATARM–08/02

SF: Special Function

Registers

The AT91X40 Series provides registers which implement the following special functions.

•

Chip identification

•

RESET status

•

Protect Mode (see “Protect Mode” on page 60)

Chip Identification

Table 13 provides the Chip ID values for the products described in this datasheet.

SF User Interface

Chip ID Base Address = 0xFFF00000 (Code Label SF_BASE)

Table 13. Chip ID Values

Product

Chip

AT91M40800

0x14080044

AT91R40807

0x44080746

AT91M40807

0x14080745

AT91R40008

0x44000840

Table 14. SF Memory Map

Offset

Name

Access

Reset State

0x00

Chip ID Register

SF_CIDR

Read Only

Hardwired

0x04

Chip ID Extension Register

SF_EXID

Read Only

Hardwired

0x08

Reset Status Register

SF_RSR

Read Only

See register

description

0x0C

Memory Mode Register

SF_MMR

Read/Write

0x0

0x10

Reserved

–

0x14

Reserved

–

0x18

Protect Mode Register

SF_PMR

Read/Write

0x0

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