M I L - S T D - 1 5 5 3 M O D E S A N D A R C H I T E C T U R EData Device Corporation DS-BU-67301B-Gwww.ddc-web.com 1/1419images, discretes, UARTs, IEEE 1394, parallel, IRIG time, video, and voice. Inaddition, Chapter 106 provides standardization of time bases.For MIL-STD-1553, IRIG 106 Chapter 10 defines packets that can encapsulate oneof more 1553 messages. Within these packets, all messages are tagged with either a48-bit relative or 64-bit absolute time stamp. For each message, there is also a blockstatus word, which includes indications of bus channel and message validity, andidentifies specific errors. The 1553 format also defines indications of response time,plus storage of all 1553 Command, Status, and Data Words, in the order received.For supporting IRIG 106 Chapter 10, the Total-AceXtreme® includes DMAcapability, which operates in conjunction with the PCI Initiator interface to transfermonitored data from the 1553 monitor to PCI host space.Figure 5. Monitor Block Diagram - Advanced Data Handler (ADH)
