Freescale Semiconductor MPC5200B ユーザーズマニュアル

ATA Bus Background

MPC5200B Users Guide, Rev. 1

Freescale Semiconductor

11-27

11.7.2

ATA Modes

11.7.3

ATA Addressing

In the ATA interface, there are two aspects of addressing that are present: register addressing and sector addressing. These are discussed in
the next sections.

Table 11-35. ATA Standards

Interface

Standard

Type

PIO Modes

DMA Modes

Special Features or Enhancements

introduced Relative to IDE/ATA

IDE/ATA

ANSI

0,1,2

Single word—0,1,2
Multiword—0

—

ATA-2

ANSI

0,1,2,3,4

Single word—0,1,2
Multiword—0,1,2

Block transfers, logical block addressing,
improved identify drive command

FAST ATA

Marketing

0,1,2,3

Single word—0,1,2
Multiword 0,1

Same as ATA-2

Fast ATA-2

Marketing

0,1,2,3,4

Single word—0,1,2
Multiword—0,1,2

Same as ATA-2

ATA-3

Unofficial

0,1,2,3,4

Single word—0,1,2
Multiword—0,1,2

Same as ATA-2, plus improved reliability, SMART

Ultra ATA

Unofficial

0,1,2,3,4

Single word—0,1,2
Multiword—0,1,2,3

Same as ATA-3

ATAPI

ANSI

0,1,2,3,4

Single word—0,1,2
Multiword—0,1,2

Support for non-hard-disk devices CD-ROM,
Tape drives, etc.

EIDE

Marketing

0,1,2,3,4

Single word—0,1,2
Multiword—0,1,2

Same as ATA-2, plus ATAPI and dual host
adapters

ATA-4

ANSI

0,1,2,3,4

Multiword—0,1,2
Ultra DMA—0,1,2

Same as ATA-3, Single word DMA retired

Table 11-36. ATA Physical Level Modes

Mode

Cycle Time (ns)

Transfer Rate (MB/s)

Standard

PIO mode 0

600

3.3

ATA

PIO mode 1

383

5.2

ATA

PIO mode 2

240

8.3

ATA

PIO mode 3

180

11.1

ATA-2 (IORDY required)

PIO mode 4

120

16.7

ATA-2 (IORDY required)

DMA mode 0 (Multiword)

480

4.2

ATA

DMA mode 1 (Multiword)

150

13.3

ATA-2

DMA mode 2 (Multiword)

120

16.7

ATA-2

Ultra DMA mode 0

114

16.7

ATA-4

Ultra DMA mode 1

ATA-4

Ultra DMA mode 2

ATA-4