Introduction

The MUNICH128X is a 128-channel WAN Protocol Controller which provides four independent 24/32-channel HDLC controllers, each with a dedicated 64-channel DMA Controller and a Serial PCM Interface Controller. The device is offered in a 160- pin MQFP package, making it ideal for high-port-density applications.

特性 Features

Four independent 24/32-channel HDLC PCM Controllers with common PCI interface. Each of them provides:

? Dedicated 1024 byte Tx Buffer

? Dedicated 1024 byte Rx Buffer

? Dedicated Serial PCM Interface Controller

– T1 rates: 1.536, 1.544, 3.088, 6.176 Mbit/s

– E1 rates: 2.048, 4.096, 8.192 Mbit/s

? Dedicated 64-channel DMA Controller

– Supports linked-list buffer processing

– 16-DWord Tx DMA FIFO

– 16-DWord Rx DMA FIFO

– 4-DWord burst of Rx descriptors

– 3-DWord burst of Tx descriptors

– n-DWord burst of configuration blocks (n is unlimited according the MUNICH128X, but internal port arbitration may lead to a lower typical burst size of 4 or 8 DWords)

? Dynamic Programmable Channel Allocation

– Compatible with T1/DS1 24-channel and CEPT 32-channel PCM byte format

– Concatenation of any, not necessarily consecutive, time slots to superchannels independently for receive and transmit direction

– Support of H0, H11, H12 ISDN-channels

– Subchanneling on each time slot possible

? Bit Processor Functions (adjustable for each channel)

– HDLC Protocol

– Automatic flag detection

– Shared opening and closing flag

– Detection of interframe-time-fill change, generation of interframe-time-fill ‘1’s or flags

– Zero bit insertion

– Flag stuffing and flag adjustment for rate adaption

– CRC generation and checking (16 or 32 bits)

– Transparent CRC option per channel and/or per message

– Error detection (abort, long frame, CRC error, 2 categories of short frames, non-octet frame content)

– ABORT/IDLE flag generation

– V.110/X.30 Protocol

– Automatic synchronization in receive direction, automatic generation of the synchronization pattern in transmit direction

– E/S/X bits freely programmable in transmit direction, may be changed during transmission; changes monitored and reported in receive direction

– Generation/detection of loss of synchronism

– Bit framing with network data rates from 600 bit/s up to 38.4 Kbit/s

– Transparent Mode A

– Slot synchronous transparent transmission/reception without frame structure

– Flag generation, flag stuffing, flag extraction, flag generation in the abort case with programmable flag

– Synchronized data transfer for fractional T1/PRI channels

– Transparent Mode B

– Transparent transmission/reception in frames delimited by 00H flags

– Shared opening and closing flag

– Flag stuffing, flag detection, flag generation in the abort case

– Error detection (non octet frame content, short frame, long frame)

– Transparent Mode R

– Transparent transmission/reception with GSM 08.60 frame structure

– Automatic 0000H flag generation/detection

– Support of 40, 391/2, 401/2 octet frames

– Error detection (non octet frame contents, short frame, long frame)

– Protocol Independent

– Channel inversion (data, flags, IDLE code)

– Format conventions as in CCITT Q.921 § 2.8

– Data over- and underflow detected

? 32 Bit / 33 MHz PCI 2.1 Interface

? 32 Bit / 33 MHz De-multiplexed Bus Interface Option

? 0.5 μm, 3.3 V-Optimized Technology

? 3.3 V I/O Capability with 5.0 V Input Tolerance

? 160-pin MQFP Package