M68SC302ADS 데이터 시트보기 (PDF) - Freescale Semiconductor

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M68SC302ADS

Passive ISDN Protocol Engine

Freescale Semiconductor 

Freescale Semiconductor, Inc.

— Memory Mode Accesses Supported (I/O Not Supported)

— Supports 8- or 16-bit Memory Cycles

— Supports Ring Detect through Status Change Pin

— Additional Chip Select Allows Another Device to be Address Mapped on the PC Card Bus.

• ISDN Communications Processor

— Requires No External (Local) RAM

— Flexible Channel Handling

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RISC Processor Decreases CPU Load with Flexible Buffer Descriptor Structure and HDLC

Capability (UART Mode Not Supported).

Totally Independent Programming for Rx/Tx for each of the B and D Channels

Y Supports Any Sub-Channeling for Each of the B Channels

Enables a Concatenation of 2 B Channels (or Any Selected Bits) to a Super-Channel

R HDLC with Retry Capability for the D Channel

A Allows Dynamic Connection/Disconnection for each of the B Channels

Total 1536KB Dual Port RAM Divided into Parameter and Data Buffer RAM

IN 256 Byte Parameter RAM (As in PM302)

1280 Byte Data RAM with Efficient FIFO Organization and Flexible Buffer Size

Independent Programmable Channel FIFO Length, if Split Equally:

IM • 4 x 256 Bytes FIFO for B1 and B2 Channel (Rx/Tx)

• 2 x 64 Bytes FIFO for D Channel (Rx/Tx)

Glueless Interface to Freescale and Other Popular ISDN S/T and U Interface Chips

L Supports Freescale Interchip Digital Link (IDL)

E Supports General Circuit Interface (GCI), Also Known as IOM-21

Includes Serial Communication Port (SCP) for Synchronous Communication

R Includes one SMC That Can Support Both the C/I and Monitor Channel of GCI

P Two Strobes Support Time-Slot Assignment of Non-Intelligent Peripherals

— Only One Crystal Required for TA Application.

— Clock Output (CLKO) Generation from a Crystal. CLKO Can Be Connected to S/T XTAL Input.

— Clock Input for U-Chip (MC145572) can be Used to Drive SC302

1. IOM-2 is a trademark of Siemens AG

MC68SC302 PRODUCT INFORMATION

For More Information On This Product,

Go to: www.freescale.com

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