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ST5451 Datasheet(PDF) 1 Page - STMicroelectronics |
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ST5451 Datasheet(HTML) 1 Page - STMicroelectronics |
1 / 34 page ST5451 ISDN HDLC AND GCI CONTROLLER MONOLITHIC ISDN ORIENTED HDLC AND GCI CONTROLLER. GCI AND µW/DSI COMPATIBLE. FULLY CONTROLLING GCI AND GCI-SCIT M & C/I CHANNELS MANAGEMENT. FULLY SUPPORTING LAPB AND LAPD PRO- TOCOL ON B OR D CHANNEL. EASILY INTERFACEABLE WITH ANY KIND OF STANDARD NON MULTIPLEXED OR MULTIPLEXED BUS MICROPROCESSOR. DMA ACCESS WITH MULTIPLEXED BUS µP CAN HANDLE AND STORE AT THE SAME TIME TWO FRAMES IN TRANSMISSION (64bytes FIFO Tx) AND EIGHT FRAMES IN RECEPTION (64bytes FIFO Rx) COMPATIBLE WITH ALL THE STMicroelec- tronics ISDN PRODUCT FAMILY. GENERAL DESCRIPTION ST5451 HDLC and GCI controller is a CMOS cir- cuit fully developed by STMicroelectronics and diffused in advanced 1.2 µm HCMOS3 technol- ogy. The device is intended to be used mainly in ISDN applications, in Terminal (TE) and in Line Termi- nations (LT). ST5451 can handle HDLC packets either on 16Kbit/s D channel or 64 Kbit/s B channel; it can work with a wide range of PCM signals go- ing from GCI (General Circuit Interface) to DSI (Digital System Interface) to any PCM-like stream. ST5451 is a complete GCI controller designed to comply with the GCI and GCI-SCIT (Special Cir- cuit Interface for Terminal) completely handling Monitor (M) and Command/Indicate (C/I) chan- nels. ST5451 can be easily controlled by many differ- ent kind of microprocessors or microcontrollers having either non-multiplexed or multiplexed bus structure. ST5451 can be used in connection with ST5420/1 S Interface Devices (SID- µW and SID-GCI) and ST5080 Programmable ISDN Combo (PIC) in Terminals and with ST5410 U Interface Device (UID) in Line Terminations. March 2000 T is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without ® PIN CONNECTION (Top view) SO28 ORDERING NUMBER: ST5451D 1/34 |
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