KU82596CA-25

Product Summary

The KU82596CA-25 is an intelligent, high-performance 32-bit Local Area Network coprocessor. The KU82596CA-25 implements the CSMA/CD access method and can be configured to support all existing IEEE 802.3 standards-TYPEs 10BASE-T, 10BASE5, 10BASE2, 1BASE5, and 10BROAD36. It can also be used to implement the proposed standard TYPE 10BASE-F. The KU82596CA-25 performs high-level commands, command chaining, and interprocessor communications via shared memory, thus relieving the host CPU of many tasks associated with network control. All time-critical functions are performed independently of the CPU, this increases network performance and efficiency. The KU82596CA-25 bus interface is optimized for Intel’s i486TMSX, i486TMDX, i487TMSX, 80960CA, and 80960KB processors.

Parametrics

KU82596CA-25 absolute maximum ratings: (1)Operating Frequency: 12.5 MHz to 16 MHz; (2)CLK Period: 62.5 to 80; (3)CLK Period Stability: 0.1%; (4)CLK High: 20; (5)CLK Low 20; (6)CLK Rise Time: 8 at 0.8V to 2.0V; (7)CLK Fall Time: 8 at 2.0V to 0.8V; (8)BEn, LOCK, and A2±A31 Valid Delay: 3 to 23; (9)BLAST, PCHK Valid Delay: 3 to 32; (10)BEn, LOCK, BLAST, A2±A31 Float Delay: 3 to 39; (11)W/R and ADS Valid Delay: 3 to 23; (12)W/R and ADS Float Delay: 3 to 39; (13)D0±D31, DPn Write Data Valid Delay: 3 to 27; (14)D0±D31, DPn Write Data Float Delay: 3 to 39; (15)HOLD Valid Delay: 2 to 30; (16)CA and BREQ Setup Time: 11; (17)CA and BREQ Hold Time: 6.

Features

KU82596CA-25 features: (1)Performs Complete CSMA/CD Medium Access Control (MAC) Functions-Independently of CPU: IEEE 802.3 (EOC) Frame Delimiting; (2)Supports Industry Standard LANs: IEEE TYPE 10BASE-T,; (3)IEEE TYPE 10BASE5 (Ethernet*), IEEE TYPE 10BASE2 (Cheapernet), IEEE TYPE 1BASE5 (StarLAN), and the Proposed Standard 10BASE-F, Proprietary CSMA/CD Networks Up; (4)to 20 Mb/s; (5)On-Chip Memory Management: Automatic Buffer Chaining, Buffer Reclamation after Receipt of Bad Frames; Optional Save Bad Frames, 32-Bit Segmented or Linear (Flat) Memory Addressing Formats; (6)Network Management and Diagnostics: Monitor Mode, 32-Bit Statistical Counters; (7)82586 Software Compatible; (8)Self-Test Diagnostics.

Diagrams