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E2F0007-18-11

隆 Semiconductor

隆 Semiconductor

MSM9405

IrDA Communication Controller

im

This version: Jan. 1998

MSM9405

ina

Pr

el

ry

GENERAL DESCRIPTION

The MSM9405 is a communication controller conforming to IrDA, the international standard for

infrared data communication. The device covers the IrDA physical specifications Ver.1.0 and

1.1.

Since the device performs some of the functions concerning communication protocol control,

the load on the software (firmware) for protocol control can be reduced. By combining the

device with another microcontroller and an infrared transceiver module, a device provided

with IrDA-compliant communication function can be configured.

FEATURES

鈥?Data transfer rates

IrDA 1.0

IrDA 1.1

: 2400, 9600 bps; 19.2, 38.4, 57.6, 115.2 kbps

: 0.576, 1.152, 4 Mbps

鈥?Detection/removal for beginning of frame and end of frame (IrDA 1.0, 1.1)

Insertion for beginning of frame and end of frame (IrDA 1.0, 1.1)

鈥?Generation/check for CRC (IrDA 1.0, 1.1)

鈥?Host interface

8-bit data bus

DMA transfer

Interrupt

Address

Control signal

:

:

:

:

:

D

0

-D

7

DREQ, DACK,

TC

INTR

A

0

-A

3

CS, RD, WR

鈥?Infrared module control signal : SD

鈥?Built-in 32-byte transmit-receive FIFOs

鈥?Power down mode

鈥?Built-in oscillator circuit

鈥?Crystal oscillation frequency : 18.432 MHz (other than 4 Mbps data rate)

: 48 MHz (when 4 Mbps data rate used)

鈥?Operating voltage (V

DD

)

: 2.7 to 3.6 V

鈥?Package:

30-pin plastic SSOP (SSOP30-P-56-0.65-K) (Product name : MSM9405MB)

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