FDC37M607 datasheet(137/182 Pages) SMSC

137 / 182 page

137

SMSC Defined Logical Device Configuration

Registers

The

SMSC

Specific

Logical

Device

Configuration

Registers reset to their default values only on

hard resets generated by Vcc or VTR POR (as

shown) or the RESET_DRV signal.

These

registers are not affected by soft resets.

Table 59 - Floppy Disk Controller, Logical Device 0 [Logical Device Number = 0x00]

NAME

REG INDEX

DEFINITION

STATE

FDD Mode Register

Default = 0x0E

on Vcc POR or

Reset_Drv

0xF0 R/W

Bit[0] Floppy Mode

= 0 Normal Floppy Mode (default)

= 1

Enhanced Floppy Mode 2 (OS2)

Bit[1] FDC DMA Mode

= 0

Burst Mode is enabled

= 1

Non-Burst Mode (default)

Bit[3:2] Interface Mode

= 11

AT Mode (default)

= 10

(Reserved)

= 01

PS/2

= 00

Model 30

Bit[4] Swap Drives 0,1 Mode

= 0

No swap (default)

= 1

Drive and Motor sel 0 and 1 are

swapped.

Bit[5] Reserved, set to zero

Bit[6] FDC Output Type Control

= 0 FDC outputs are OD24 open drain (default)

= 1 FDC outputs are O24 push-pull

Bit[7] FDC Output Control

= 0 FDC outputs active (default)

= 1 FDC outputs tri-stated

Note: Bits 6 & 7 do not affect the parallel port FDC

pins.

FDC37M607 Datasheet(PDF) 137 Page - SMSC Corporation

FDC37M607 Datasheet(HTML) 137 Page - SMSC Corporation

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

Datasheet Download

Link URL