TNT4882

TNT4882 Single-Chip IEEE 488.2 Talker/Listener ASIC Features 100-pin plastic quad flat pack (QFP), surfacemount package IEEE 488.1-compatible transceivers on chip Fast data transfers – Up to 1.5 Mbytes/s using interlocked IEEE 488.1 handshake – Up to 8 Mbytes/s using HS488™ Two 8-bit 16-deep FIFOs buffer data between GPIB and CPU With exception of Controller, performs all IEEE 488 interface functions – SH1, AH1, T5 or TE5, L3 or LE3, SR1, RL1, PP1 or PP2, DC1, DT1, and C0 Meets all IEEE 488.2 requirements – Bus line monitoring – Preferred implementation of requesting service – Not sending messages when there are no Listeners Software compatible with Turbo488 /NAT4882™ ASICs Reduces software overhead – Does not lose a data byte if ATN is asserted while transmitting data – Static interrupts status bits that do not clear when read ™ NEW! – Automatically transmits END or performs RFD holdoff on last byte of DMA transfer – Interrupts when handshake is complete on last byte of a DMA transfer – Has 32-bit counter for large, uninterrupted data transfers Programmable timer interrupt for general-purpose timing use Complete in-system functional testing with internal loop-back mode ISA bus glue logic on chip Direct memory access (DMA) Device status indicator pins – My Address, Talk Addressed, Listen Addressed, REM, DCAS, TRIG Automatically processes IEEE 488 commands and reads undefined commands Handles 6 primary and secondary addressing modes Automatic EOS and/or NL message detection Pro...