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HI-6121PQIF Datasheet(PDF) 1 Page - Holt Integrated Circuits |
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HI-6121PQIF Datasheet(HTML) 1 Page - Holt Integrated Circuits |
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1 / 116 page  HI-6120 Parallel Bus Interface and HI-6121 Serial Peripheral Interface (SPI) MIL-STD-1553 Remote Terminal ICs HOLT INTEGRATED CIRCUITS www.holtic.com HI-6120 Rev New 11/09 November 2009 GENERAL DESCRIPTION REMOTE TERMINAL FEATURES The HI-6120 and HI-6121 provide a complete, integrated, 3.3V MIL-STD-1553 Remote Terminal in a monolithic silicon gate CMOS device. Two host interface options are offered: The HI-6120 uses a 16-bit parallel host bus interface for access to registers and RAM and is offered in a 100-pin plastic quad flat pack (PQFP). The HI-6121 has a 4-wire SPI (Serial Peripheral Interface) host connection and comes in a reduced pin count 52-pin PQFP or 64-pin QFN. Both devices handle all aspects of the MIL-STD- 1553 protocol, including message encoding, decoding, error detection, illegal command detection and data buffering. Host data management is simplified by storing message information and data within the on-chip 32K x 16 static RAM. A descriptor table in shared RAM provides fully programmable memory management. Multiple descriptor tables can be implemented for fast context switching. Transmit and receive commands can use any of four different data buffer modes: indexed (single) buffering, ping-pong (double) buffering or two circular buffer schemes. Transmit and receive commands for each subaddress may use different buffer modes. Mode code commands employ a simple scheme for storing mode data and message information with programmable interrupts. The device provides internal illegalization capability, allowing any subset of subaddress, command T/ bit, broadcast vs non-broadcast and word count (or mode code) to be illegalized, resulting in a total of 4,096 possible combinations. The illegalization table resides in internal RAM. The RT can also operate without illegal command detection, providing “in form” responses to all valid commands. Broadcast command recognition is optional. The HI-6120 and HI-6121 provide programmable interrupts for automatic message handling, message status and general status. A host interrupt history log maintains information about the last 16 interrupts. The HI-6120 can be configured for automatic self-initialization. A dedicated SPI port reads data from external serial EEPROM memory to fully configure the descriptor table, illegalization table and host interrupts. The device offered with industrial temperature range. Extended temperature range is also offered, with optional burn-in. A “RoHS compliant” lead-free option is offered. Fully integrated 3.3V Remote Terminal meets all requirements for MIL-STD-1553B Notice 2 Four data buffer methods for subaddress transmit and receive commands: indexed (single) buffering, ping- pong (double) buffering and two circular buffer modes Independently selectable data buffer modes for transmit and receive commands on each subaddress Simplified mode code command handling Integral 16-bit Time-Tag counter has programmable options for clock, interrupts and auto-synchronization Message information and time-tag words are stored with message data words for all transacted messages In compliance with MIL-STD-1553B Notice 2, received data from broadcast messages may be optionally separated from non-broadcast received data Optional interrupt log buffer stores the most recent 16 interrupts to minimize host service duties Optional illegal command detection uses internal table Optional automatic self-initialization at reset +/- 8kV ESD Protection (HBM, all pins) MIL-STD-1760 compliant R and HI-6121 Internal dual-redundant transceivers provide direct connection to bus isolation transformers. is · · · · · · · · · · · · HI-6121 in 52-PQFP Package PIN CONFIGURATION (Top View) 39 - TEST 38-LOCK 37 - MTSTOFF 36 - BUSA 35 - VCCP 34 - 33 - 32 - VCCP 31 - 30 - 29 - 28 - 27 - TEST3 BUSA BUSB BUSB TEST0 TEST1 TEST2 COMP - 1 -2 MODE - 3 SI - 4 SCK - 5 SO - 6 MCLK - 7 RTA0 - 8 RTA1 - 9 RTA2 - 10 -11 RTA3 - 12 RTA4 - 13 CE MR HI-6121PQx |
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