SMC032BF View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

SMC032BF

32MByte, 64MByte, 128MByte, 256MByte, 512MByte, 1GByte, 2GByte, and 4GByte 3.3/5V Supply CompactFlash™ Card

STMicroelectronics 

SMCxxxBF

CF-ATA command description

M

Table 68. Set Features

Bit

7

6

5

4

3

2

1

0

Command (7)

C/D/H (6)

X

Cyl High (5)

Cyl Low (4)

Sect Num (3)

Sect Cnt (2)

Feature (1)

EFh

Drive

X

X

X

X

Config

Feature

Table 69. Features Supported

Feature

Operation

01h Enable 8-bit data transfers.

03h Set transfer mode based on value in Sector Count register.

55h Disable Read Look Ahead.

69h NOP Accepted for backward compatibility.

81h Disable 8 bit data transfer.

96h NOP Accepted for backward compatibility.

97h Accepted for backward compatibility. Use of this Feature is not recommended.

9Ah

Set the host current source capability. Allows trade-off between current drawn and

read/write speed.

Table 70. Transfer Mode Values

Mode

Bits (7:3)

PIO default mode

00000b

PIO default mode, disable

IORDY

00000b

PIO flow control transfer

mode

00001b

Reserved

00010b

Multi-Word DMA mode

00100b

1. Mode = transfer mode number

Bits (2:0)

000b

001b

Mode(1)

N/A

Mode

73/91

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