S29GL01GS datasheet(14/106 Pages) SPANSION

14 / 106 page

GL-S MirrorBit® Family

S29GL_128S_01GS_00_08 October 9, 2013

Da ta

Sh e e t

Note: These tables have been condensed to show sector related information for an entire device on a single

page Sectors and their address ranges that are not explicitly listed (such as SA001-SA510) have sectors

starting and ending addresses that form the same pattern as all other sectors of that size. For example, all

128 kB sectors have the pattern XXX0000h-XXXFFFFh.

2.2

Device ID and CFI (ID-CFI) ASO

There are two traditional methods for systems to identify the type of flash memory installed in the system.

One has traditionally been called Autoselect and is now referred to as Device Identification (ID). The other

method is called Common Flash Interface (CFI).

For ID, a command is used to enable an address space overlay where up to 16 word locations can be read to

get JEDEC manufacturer identification (ID), device ID, and some configuration and protection status

information from the flash memory. The system can use the manufacturer and device IDs to select the

appropriate driver software to use with the flash device.

CFI also uses a command to enable an address space overlay where an extendable table of standard

information about how the flash memory is organized and operates can be read. With this method the driver

software does not have to be written with the specifics of each possible memory device in mind. Instead the

driver software is written in a more general way to handle many different devices but adjusts the driver

behavior based on the information in the CFI table.

Traditionally these two address spaces have used separate commands and were separate overlays.

However, the mapping of these two address spaces are non-overlapping and so can be combined in to a

single address space and appear together in a single overlay. Either of the traditional commands used to

access (enter) the Autoselect (ID) or CFI overlay will cause the now combined ID-CFI address map to appear.

The ID-CFI address map appears within, and overlays the Flash Array data of, the sector selected by the

address used in the ID-CFI enter command. While the ID-CFI ASO is entered the content of all other sectors

is undefined.

The ID-CFI address map starts at location 0 of the selected sector. Locations above the maximum defined

address of the ID-CFI ASO to the maximum address of the selected sector have undefined data. The ID-CFI

enter commands use the same address and data values used on previous generation memories to access

the JEDEC Manufacturer ID (Autoselect) and Common Flash Interface (CFI) information, respectively.

For the complete address map see Table 6.2 on page 60.

Table 2.4 S29GL128S Sector and Memory Address Map

Sector Size (kbyte)

Sector Count

Sector Range

Address Range

(16-Bit)

Notes

128

SA00

0000000h-000FFFFh

Sector Starting Address

–

SA127

07F0000h-07FFFFFh

Sector Ending Address

Table 2.5 ID-CFI Address Map Overview

Word Address

Description

Read / Write

(SA) + 0000h to 000Fh

Device ID

(traditional Autoselect values)

Read Only

(SA) + 0010h to 0079h

CFI data structure

Read Only

(SA) + 0080h to FFFFh

Undefined

Read Only

S29GL01GS датащи(PDF) 14 Page - SPANSION

S29GL01GS датащи(HTML) 14 Page - SPANSION

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

датащи скачать

ссылки URL