YTD439中文資料ETC數(shù)據(jù)手冊(cè)PDF規(guī)格書
| 廠商型號(hào) |
YTD439 |
| 功能描述 | ISDN BRI controller for Terminal Equipment with built-in DSU |
| 文件大小 |
179.62 Kbytes |
| 頁(yè)面數(shù)量 |
15 頁(yè) |
| 生產(chǎn)廠商 | ETC List of Unclassifed Manufacturers |
| 中文名稱 | 未分類制造商 |
| 數(shù)據(jù)手冊(cè) | |
| 更新時(shí)間 | 2025-8-10 11:10:00 |
| 人工找貨 | YTD439價(jià)格和庫(kù)存，歡迎聯(lián)系客服免費(fèi)人工找貨 |
YTD439規(guī)格書詳情
[Yamaha]
? 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.
Layer 1 control block
? Frame assembling and disassembling function.
? I430 TTL output pin
Layer 2 control block
? Built-in LAPD protocol (supports four links).
? Call control and D-channel packet function.
Layer 3 interface block
? Message exchange through I/O access (large 1088-byte FIFO).
B channel HDLC controller
? Supports CRC-CCITT and CRC-32.
? 128k/64k/56k rate adaption
B channel transparent
? Supports PIAFS 64k/32k.
? Flexible rate adaption function.
B channel DATA FIFO
? Transmission and reception: 128-byte FIFO × 2 channels.
TD switch
? Switch circuit for 8 channels of B channel data.
? 512 k to 2,048 kHz PCM highway.
Others
? Terminal block can be disconnected. Power can be cut off.
? Terminal block sleep mode.
? Power supply to the analog block: +5 V.
Power supply to the digital block: +5 V or 3.3 V.
? 5 V tolerant I/O pin
? 100-pin SQFP.
? Applications
? Terminal adapter
? Remote router
? ISDN telephone
? ISDN home telephone
? ISDN Facsimile
產(chǎn)品屬性
- 型號(hào)：
YTD439
- 功能描述：
ISDN BRI controller for Terminal Equipment with built-in DSU
| 供應(yīng)商 | 型號(hào) | 品牌 | 批號(hào) | 封裝 | 庫(kù)存 | 備注 | 價(jià)格 |
|---|---|---|---|---|---|---|---|
YAMAHA |
23+ |
TQFP100 |
3000 |
一級(jí)代理原廠VIP渠道,專注軍工、汽車、醫(yī)療、工業(yè)、 |
詢價(jià) | ||
SAMTEC |
三年內(nèi) |
1983 |
只做原裝正品 |
詢價(jià) | |||
24+ |
N/A |
46000 |
一級(jí)代理-主營(yíng)優(yōu)勢(shì)-實(shí)惠價(jià)格-不悔選擇 |
詢價(jià) | |||
SAMTEC/申泰 |
25+ |
NA |
880000 |
明嘉萊只做原裝正品現(xiàn)貨 |
詢價(jià) | ||
YAMAHA |
25+ |
QFP |
2307 |
原裝現(xiàn)貨熱賣中,提供一站式真芯服務(wù) |
詢價(jià) | ||
YAHAMA |
2447 |
LQFP |
100500 |
一級(jí)代理專營(yíng)品牌!原裝正品,優(yōu)勢(shì)現(xiàn)貨,長(zhǎng)期排單到貨 |
詢價(jià) | ||
YAMAHA |
23+ |
TQFP100 |
50000 |
全新原裝正品現(xiàn)貨,支持訂貨 |
詢價(jià) | ||
YAMAHA |
23+ |
TQFP |
7000 |
絕對(duì)全新原裝!現(xiàn)貨!特價(jià)!請(qǐng)放心訂購(gòu)! |
詢價(jià) | ||
24+ |
QFP |
40 |
詢價(jià) | ||||
YAMAHA |
TQFP100 |
53650 |
一級(jí)代理 原裝正品假一罰十價(jià)格優(yōu)勢(shì)長(zhǎng)期供貨 |
詢價(jià) |
