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.
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