HI-1575

HI-1575 February 2006 MIL-STD-1553 3.3V Dual Transceivers with Integrated Encoder / Decoders PIN CONFIGURATIONS 40 39 ERROR 38 CHA/CHB 37 CLK 36 D0 35 D1 34 D2 33 D3 32 D4 31 - 1 RCVA 2 BUSA 3 BUSA 4 VDD 5 BUSB 6 BUSB 7 RCVB 8 REG 9 - 10 DESCRIPTION The HI-1575 is a low power CMOS dual transceiver with on-chip Manchester II Encoder and dual Decoder designed to meet the requirements of the MIL-STD-1553 specification. The part acts as a "Smart Transceiver", allowing users to transmit and receive properly encoded MIL-STD-1553 Command and Data words between a 16-bit host processor and dual MIL-STD-1553 data buses. A single write cycle is used to transfer a word to the HI-1575, which encodes the data, adds the selected Sync and Parity bits, and transmits the word on the chosen MIL-STD-1553 data bus. Complete MIL-STD-1553 messages may be transmitted by executing multiple write cycles to the device. Activity on both MIL-STD-1553 data buses is continuously monitored. When the HI-1575 detects a properly encoded word, a hardware interrupt is generated and the information is decoded and stored in one of two internal registers, which may then be read by the host processor. Bits in the internal Status & Mode Register indicate on which bus the word was received and whether the word had a Data or Command Sync. 1575PCI 1575PCT 30 29 D5 28 D6 27 D7 26 GND 25 D8 24 D9 23 D10 22 D11 21 - 40 Pin Plastic 6mm x 6mm Chip-scale package 31 - CHA/CHB 32 - ERROR 30 - CLK 29 - D0 28 - D1 27 -...