User`s manual

configuration a special parallel port cable must be used. This cable can be obtained from

Redmond Cable Corp., in Redmond, WA, PN MIC-64355913 (10 ft.), described as “CE/PE

Parallel Cable, DB25M to DB25M.”

Table 5: Parallel Port Pin-out

Pin Name Pin Name

1 NSTB 14 NAFD

2 PPD0 15 NERROR

3 PPD1 16 NINIT

4 PPD2 17 NSELIN

5 PPD3 18 GND

6 PPD4 19 GND

7 PPD5 20 GND

8 PPD6 21 GND

9 PPD7 22 GND

10 NACK 23 GND

11 BUSY 24 GND

12 PE 25 GND

13 SEL

IrDA Serial Interface

The IrDA 1.1 capable serial port of the HD64465 companion chip is used to provide IrDA

capability. A 10 pin IrDA standard connector is provided for use with an external IrDA

transceiver and a board-mounted transducer is also provided. These are mounted on the Tahoe

board.

The Fast IR (FIR) module is fully IrDA 1.1 compliant, and supports the serial infrared link at

288 Kbit, 576 Kbit, 1.152 Mbit and 4 Mbit. The three lower speeds comply with the

Synchronous Data Link Control (SDLC) protocol (packets with start/stop flags delimiting a

data packet encoded by zero-insertion). The 4 Mbit protocol uses an optical preamble and

start/stop flags to delimit the 4 Pulse Position Modulated (4 PPM) packet data.

IrDA Features:

• Supports HP SIR or ASKIR infrared interface

• Supports FIR and MIR

• Provides DMA channel mode for FIR

• Supports STANDBY mode

This HARP board connector pin-out is shown below.