 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
PM7375 Datasheet(PDF) 1 Page - PMC-Sierra, Inc |
|
||||||||||||||||||||||||||||||
PM7375 Datasheet(HTML) 1 Page - PMC-Sierra, Inc |
|
|
1 / 2 page  PMC-931138 (R6) © 1998 PMC-Sierra, Inc. October, 1998 PM7375 PMC-Sierra,Inc. ATM SAR and PHY Processor for PCI Bus LASAR-155 FEATURES • Combines PHY, ATM, AAL5, and PCI DMA Controller on a single device to simplify the design, programming, and manufacturing of ATM adapters. • Conforms to ATM Forum User- Network Interface (UNI) Specification Version 3.1, Bellcore Standard TA- NWT-001113, and ITU-T Recommendations I.432 and I.363. HOST INTERFACE • Provides a 32-bit, 33 MHz Peripheral Component Interconnect (PCI) Local Bus Specifications Version 2.1 interface and supports both bus- master and bus-slave access modes. Other 32-bit system buses can be accommodated using external glue logic. • Implements an efficient DMA controller to manage the transfer of packets between the SAR engine and the host memory with minimum PCI Host intervention. There is no need for a local packet memory. • The transmit and receive DMA channels support scatter/gather capabilities where a packet can be stored in non-contiguous buffers. • Provides an 8-cell FIFO in the transmit direction and a 96-cell FIFO in the receive direction to allow for up to 270 µs of PCI bus latency in the receive direction. PHYSICAL LAYER • Incorporates the industry standard PMC PM5346 S/UNI®-LITE to provide SONET and SDH interfaces at STS- 3c/STM-1 (155.52 Mb/s) and STS-1 (51.84 Mb/s) rates. • Provides on-chip clock recovery and clock synthesis units that are compliant with Bellcore TR-NWT-000253 Issue 2 and ITU-T Recommendation G.958 jitter requirements. • Performs SONET/SDH framer, overhead, and cell processing functions at STS-3c/STM-1 and STS-1 rates. ATM AND ADAPTATION LAYERS • Supports the simultaneous segmentation and reassembly of 128 open Virtual Circuits (VCs) in both transmit and receive directions. • Provides leaky bucket Peak Cell Rate (PCR) enforcement using eight programmable peak queues coupled with sub-rate control on a per-VC basis. • Implements Sustainable Cell Rate (SCR) enforcement using a token generation mechanism on a per-VC basis. • Provides an internal VC parameter storage for both the 128 transmit and 128 receive VCs to simplify the design of the ATM adapter and to sustain a high data throughput rate. MULTIPURPOSE PORT • In bypass mode, provides an 8-bit SCI-PHY™ or UTOPIA-compliant port to connect to an external physical layer processor such as PM7345 S/UNI- PDH™ for DS3/E3 UNI. • In non-bypass mode, supports the insertion and extraction of Constant Bit Rate (CBR) cells that carry encoded video and audio signals. MICROPROCESSOR INTERFACE • In slave mode, provides a generic 8-bit microprocessor port for the configuration, control, and monitoring by an optional microprocessor. • In master mode, allows for the control of two external devices without glue logic. PACKAGING • Provides a standard 5-signal P1149.1 JTAG test port for boundary scan board test purposes. • Implemented in low power, 0.6 micron, +5 V CMOS technology with TTL and Pseudo ECL (PECL) compatible inputs and outputs. • Packaged in 208-pin Plastic Quad Flat Pack (PQFP) package. APPLICATIONS • ATM Workstations and Adapters • ATM Bridges, Switches, and Hubs • Multimedia Terminals BLOCK DIAGRAM Microprocessor Interface PCIINTB PCICLK PERRB SERRB REQB GNTB Receive ATM Cell Processor Receive Framer and Overhead Processor Receive Line Interface RRCLK- ALOS+ ALOS- RRCLK+ RXD- RXD+ TXC TXD- TXD+ Receive ATM and Adaptation Processor SAR Perfor- mance Monitor Connection Parameter Store Transmit ATM Traffic Shaper TRCLK- TRCLK+ JTAG Port Transmit Framer and Overhead Processor Transmit ATM Cell Processor Transmit Line Interface Transmit ATM and Adaptation Processor DEVSELB IDSEL IRDBY STOPB FRAMEB TRDYB LOCKB PCI DMA Controller PAR AD[31:0] C/BEB[3:0] PCICLKO SYSCLK |
Similar Part No. - PM7375 |
|
Similar Description - PM7375 |
|
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.NET |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
