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參數(shù)資料
| 型號(hào)： | YTD439 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Shielded Paired Cable; Number of Conductors:4; Conductor Size AWG:22; No. Strands x Strand Size:Solid; Jacket Material:Polyolefin; Number of Pairs:2; Impedance:150ohm; Leaded Process Compatible:Yes; Voltage Nom.:300V RoHS Compliant: Yes |
| 中文描述： | 業(yè)務(wù)數(shù)字網(wǎng)端口控制器的終端設(shè)備內(nèi)置DSU的 |
| 文件頁(yè)數(shù)： | 1/15頁(yè) |
| 文件大小： | 179K |
| 代理商： | YTD439 |
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YTD439
ISTU
ISDN BRI controller for Terminal Equipment with built-in DSU
YTD439 CATALOG
CATALOG No.:4TD439A2
2001.1
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.
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