PC87322VF datasheet(77/84 Pages) NSC

Part #	PC87322VF

Description	Floppy Disk Controller with Dual UARTs, Enhanced Parallel Port, and IDE Interface

PDF	84 Pages

Scroll/Zoom	100%

Manufacturer	NSC [National Semiconductor (TI)]

Direct Link	http://www.national.com

Logo

77 / 84 page

100 Reference (Continued)

102 EXAMPLE FOUR DRIVE CIRCUIT USING THE PC87322VF

Hex Buffers

ICC e 40 mA

TLC11870 – 48

open collector

FIGURE 10-1 PC87322VF Four Floppy Drive Circuit

TABLE 10-1 PC87322VF Four Floppy Drive Encoding

MTR0

DR1

DR0

Result

DR0 and MTR0 Active

DR1 and MTR1 Active

DR2 and MTR2 Active

DR3 and MTR3 Active

DR0 Active and MTR0 Inactive

DR1 Active and MTR1 Inactive

The equations shown in

Figure 10-2 define the signals of the PC87322VF IDE pins A complete IDE interface using these pins is

shown in

Figure 10-3

Equations

Comments

HCS0 e A9 A8 A7 A6 A5 A4 A3 AEN

Active at 1F0 – 1F7

HCS1 e A9 A8 A7 A6 A5 A4 A3 A2 A1 AEN

Active at 3F6 3F7

IDELO e HCS0 (RD a WR) a HCS1

(WR A0) a RD

Write 1F0 – 1F7 3F6 Read 1F0 – 1F7 3F6 3F7

IDEHI e IOCS16 HCS0 (RD a WR)

Read or Write 1F0 – 1F7 in AT Mode

IDED7 (read) e HCS0 RD a (HCS1 A0) RD

Sources D7 during Read 1F0 – 1F7 and 3F6

IDED7 (write) e WR HCS0 a (HCS1 A0)

D7 during Write 1F0 – 1F7 and 3F6

FIGURE 10-2 IDE Interface Signal Equations (Non-DMA)

PC87322VF Datasheet(PDF) 77 Page - National Semiconductor (TI)