Datasheet > YTD439

YTD439

更新时间： 2024-09-14 22:08:55

品牌	Logo	应用领域
其他 - ETC		综合业务数字网控制器
页数	文件大小	规格书
15页	181K
描述
ISDN BRI controller for Terminal Equipment with built-in DSU

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YTD439 数据手册

YTD439

ISTU

ISDN BRI controller for Terminal Equipment with built-in DSU

❑ Abstract

YTD439 is a LSI that integrates in a single chip all the communication functions that are

necessary for constructing an ISDN terminal with a built-in DSU. The functions of both the DSU

(U reference point) and terminal (S/ T reference point) are packed into the 100-pin SQFP chip

allowing miniaturization of the terminal equipment.

YTD439 has a built-in TD switch function that is necessary for controlling the connection of the

B-channel data. By connecting an external CPU, memory, and CODEC, a terminal with a built-in

DSU can be configured. In addition, YTD439 has a function that reduces the power consumption

by stopping the functions of unused blocks. This is effective for battery-driven terminals.

❑ Features

DSU block

• Conforms to TTC Standards JT-I430 and JT-G961.

• LT (line termination) function and CT (circuit termination) function.

• DSU can be disconnected.

S/T reference point driver/receiver block

• Transition to the sleep state possible by setting an I/ O register.

CPU interface block

• 8-bit or 16-bit data bus selectable.

• I/ O access through registers.

YTD439 CATALOG

CATALOG No.:4TD439A2

2001.1

12 3 4 5 6 7...15

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型号	品牌	获取价格	描述	数据表
YTD439-S	YAMAHA	获取价格	Digital SLIC, 1-Func, PQFP100, SQFP-100
YTE-102-02-F-5	SAMTEC	获取价格	Board Stacking Connector, 10 Contact(s), 5 Row(s), Female, Straight, Solder Terminal, Sock
YTE-102-02-F-5-375	SAMTEC	获取价格	Board Stacking Connector, 10 Contact(s), 5 Row(s), Female, Straight, 0.079 inch Pitch, Sol
YTE-102-02-F-5-405	SAMTEC	获取价格	Board Stacking Connector
YTE-102-02-F-5-526	SAMTEC	获取价格	Board Stacking Connector, 10 Contact(s), 5 Row(s), Female, Straight, Solder Terminal, Sock
YTE-102-02-F-6-400	SAMTEC	获取价格	Board Stacking Connector
YTE-102-02-F-6-405	SAMTEC	获取价格	Board Stacking Connector
YTE-102-02-FM-5	SAMTEC	获取价格	Board Stacking Connector, 10 Contact(s), 5 Row(s), Female, Straight, Solder Terminal, Sock
YTE-102-02-FM-5-405	SAMTEC	获取价格	Board Stacking Connector
YTE-102-02-FM-6	SAMTEC	获取价格	Board Stacking Connector, 12 Contact(s), 6 Row(s), Female, Straight, Solder Terminal, Sock