SST55LD019B-45-C-TQW PDF资料下载(33/76 页)FLASH MEMORY DRIVE CONTROLLER, PQFP100

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参数资料

型号：	SST55LD019B-45-C-TQW
厂商：	SILICON STORAGE TECHNOLOGY INC
元件分类：	存储控制器/管理单元
英文描述：	FLASH MEMORY DRIVE CONTROLLER, PQFP100
封装：	MS-026AED, TQFP-100
文件页数：	33/76页
文件大小：	711K
代理商：	SST55LD019B-45-C-TQW

Advance Information

ATA Flash Disk Controller

SST55LD019A / SST55LD019B / SST55LD019C

2004 Silicon Storage Technology, Inc.

S71241-02-000

4/04

11.2.1.16 Read-Sector(s) - 20H or 21H

This command reads from 1 to 256 sectors as specified in the Sector Count register. A sector count of

0 requests 256 sectors. The transfer begins at the sector specified in the Sector Number register. When

this command is issued and after each sector of data (except the last one) has been read by the host,

the ATA Flash Disk Controller sets BSY, puts the sector of data in the buffer, sets DRQ, clears BSY, and

generates an interrupt. The host then reads the 512 Bytes of data from the buffer.

At command completion, the Command Block registers contain the cylinder, head and sector number of

the last sector read. If an error occurs, the read terminates at the sector where the error occurred. The

Command Block registers contain the cylinder, head, and sector number of the sector where the error

occurred. The flawed data is pending in the sector buffer.

11.2.1.17 Read-Verify-Sector(s) - 40H or 41H

This command is identical to the Read-Sectors command, except that DRQ is never set and no data is

transferred to the host. When the command is accepted, the ATA Flash Disk Controller sets BSY.

When the requested sectors have been verified, the ATA Flash Disk Controller clears BSY and

generates an interrupt. Upon command completion, the Command Block registers contain the cylinder,

head, and sector number of the last sector verified.

If an error occurs, the verify terminates at the sector where the error occurs. The Command Block

registers contain the cylinder, head and sector number of the sector where the error occurred. The

Sector Count register contains the number of sectors not yet verified.

Bit ->

76543210

Command (7)

20H or 21H

C/D/H (6)

LBA

Drive

Head (LBA 27-24)

Cyl High (5)

Cylinder High (LBA 23-16)

Cyl Low (4)

Cylinder Low (LBA 15-8)

Sec Num (3)

Sector Number (LBA 7-0)

Sec Cnt (2)

Sector Count

Feature (1)