YTD439 datasheet(3/15 Pages) ETC

部件名	YTD439

功能描述	ISDN BRI controller for Terminal Equipment with built-in DSU

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制造商	ETC [List of Unclassifed Manufacturers]

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❍ Functional Comparison of YAMAHA ISDN LSIs

Note 1: DMA transfer: Request function only

I/O transfer:

4-byte FIFO

Note 2: Digital power supply only

External

[YTD421]

√√

External

DMA Transfer

or

I/O Transfer

DMA Transfer

or

I/O Transfer

DMA Transfer

or

I/O Transfer

DMA Transfer

or

I/O Transfer

(Note 1)

+5

or

+3.3 (Note 2)

+5

or

+3.3 (Note 2)

+5

or

+3.3 (Note 2)

√√

√

√√

√

√√

√

2

(2)

2

(2)

22

2

+5

32, 56, 64

√

1997 edition

1993 edition

1997 edition

1993 edition

1998 edition

1993 edition

1998 edition

√

1993 edition

100-pin SQFP 100-pin SQFP 100-pin SQFP

100-pin SQFP

20-pin SSOP

Function

YTD428

YTD421

ETSI

ETS 300 012, ETS 300 125

North American Switches

National ISDN-1/2, AT&T 5ESS,

Nortel DMS-100

DSU Function

S/T Ref. Point Analog Driver/Receiver

D Channel Layer 3 Data Transfer Method

TTC Standard

JT-I430

JT-Q920

JT-Q921

Layer 1

Layer 2

YTD423

YTD436

YTD439

1997 edition

TTC Standard

JT-G961

B Channel Data Transfer Method

B Channel Internal Clock Mode (kHz)

HDLC Controller for B Channel Data

B Channel External Clock Mode

TD Switch

Clock Output Function for CPU

Signal Output Function for Testing

5-V Tolerant I/O pin

Package

Power Supply (V)

Circuit switching

Dch Packet Switching

(Teleaction communication)

Maximum D

Channel Links

类似零件编号 - YTD439

制造商	部件名	数据表	功能描述
YAMAHA CORPORATION	YTD436	542Kb / 14P	ISTC ISDN BRI controller with S/T ref. pt. analog D/R

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类似说明 - YTD439

制造商	部件名	数据表	功能描述
YAMAHA CORPORATION	YTD428	928Kb / 28P	IDSU ISDN DSU for Terminal Equipment
YAMAHA CORPORATION	YTD428	183Kb / 14P	DSU LSI for the ISDN Terminal Equipment
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