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參數(shù)資料
| 型號(hào)： | IDT728985 |
| 廠商： | Integrated Device Technology, Inc. |
| 英文描述： | TIME SLOT INTERCHANGE DIGITAL SWITCH |
| 中文描述： | 時(shí)隙交換數(shù)字開(kāi)關(guān) |
| 文件頁(yè)數(shù)： | 1/13頁(yè) |
| 文件大?。?/td> | 117K |
| 代理商： | IDT728985 |
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1
2001 Integrated Device Technology, Inc.
TIME SLOT INTERCHANGE
DIGITAL SWITCH
256 x 256
IDT728985
DSC-5708/2
256 x 256 channel non-blocking switch
Automatic signal identification (ST-BUS
, GCI)
8 RX inputs — 32 channels at 64 Kbit/s per serial line
8 TX outputs — 32 channels at 64 Kbit/s per serial line
Three-state serial outputs
Mcroprocessor Interface (8-bit data bus)
Frame Integrity for data applications
5V Power Supply
Operating Temperature Range -40
°
C to +85
°
C
Available in 44-pin Plastic Leaded Chip Carrier (PLCC),
44-pin Plastic Quad Flatpack (PQFP) and 40-pin Plastic Dip
(P-DIP)
The IDT728985 is a ST-BUS
/GCI compatible digital switch controlled by
a mcroprocessor. The IDT728985 can handle as many as 256, 64 Kbit/s input
and output channels. Those 256 channels are divided into 8 serial inputs and
outputs, each of which consists of 32 channels. The IDT728985 provides per-
channel variable or constant throughput delay modes and mcroprocessor read
and write access to individual channels. As an important function of a digital
switch is to maintain sequence integrity and mnimze throughput delay, the
IDT728985 is an ideal solution for most switching needs.
Frame sequence, constant throughput delay, and guaranteed mnimum
delay are high priority requirements in today’s integrated data and multimedia
networks. The IDT728985 provides these functions on a per-channel basis
using a standard mcroprocessor control interface. Each of the eight serial lines
is designed to switch 64 Kbit/s PCMor N x 64 Kbit/s data.
In Processor Mode, the mcroprocessor can access the input and output time
slots to control other devices such as ISDN transceivers and trunk interfaces.
Supporting both GCI and ST-BUS
formats, IDT728985 has incorporated an
internal circuit to automatically identify the polarity and format of the frame
synchronization.
A functional block diagramof the IDT728985 device is shown on page 1.
The serial streams operate continuously at 2.048 Mb/s and are arranged in
125
μ
s wide frames each containing 32, 8-bit channels. Eight input (RX0-7) and
Microprocessor Interface
Control Register
Timing
Unit
RX0
RX1
RX2
RX3
RX4
RX5
RX6
RX7
TX0
TX1
TX2
TX3
TX4
TX5
TX6
TX7
ODE
F0i
C4i
V
CC
CS
DS
R/
W
A0/
A5
GND
CCO
DTA
D0/
D7
5708 drw01
Receive
Serial Data
Streams
Data
Memory
Output MUX
Connection
Memory
Transmit
Serial Data
Streams
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| IDT728985J | 功能描述:IC DGTL SW 256X256 44-PLCC RoHS:否 類別:集成電路 (IC) >> 邏輯 - 信號(hào)開(kāi)關(guān)，多路復(fù)用器，解碼器 系列:7200 標(biāo)準(zhǔn)包裝:48 系列:74VHC 類型:多路復(fù)用器 電路:4 x 2:1 獨(dú)立電路:1 輸出電流高，低:8mA，8mA 電壓電源:單電源 電源電壓:2 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC 包裝:管件 |
| IDT728985J8 | 功能描述:IC DGTL SW 256X256 44-PLCC RoHS:否 類別:集成電路 (IC) >> 邏輯 - 信號(hào)開(kāi)關(guān)，多路復(fù)用器，解碼器 系列:7200 標(biāo)準(zhǔn)包裝:48 系列:74VHC 類型:多路復(fù)用器 電路:4 x 2:1 獨(dú)立電路:1 輸出電流高，低:8mA，8mA 電壓電源:單電源 電源電壓:2 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC 包裝:管件 |
| IDT728985JG | 功能描述:IC DGTL SW 256X256 44-PLCC RoHS:是 類別:集成電路 (IC) >> 邏輯 - 信號(hào)開(kāi)關(guān)，多路復(fù)用器，解碼器 系列:7200 標(biāo)準(zhǔn)包裝:1 系列:74LVC 類型:解碼器/多路分解器 電路:1 x 2:4 獨(dú)立電路:2 輸出電流高，低:24mA，24mA 電壓電源:單電源 電源電壓:1.65 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.209"，5.30mm 寬） 供應(yīng)商設(shè)備封裝:16-SO 包裝:Digi-Reel® 其它名稱:296-28947-6 |
| IDT728985JG8 | 功能描述:IC DGTL SW 256X256 44-PLCC RoHS:是 類別:集成電路 (IC) >> 邏輯 - 信號(hào)開(kāi)關(guān)，多路復(fù)用器，解碼器 系列:7200 標(biāo)準(zhǔn)包裝:48 系列:74VHC 類型:多路復(fù)用器 電路:4 x 2:1 獨(dú)立電路:1 輸出電流高，低:8mA，8mA 電壓電源:單電源 電源電壓:2 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC 包裝:管件 |
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