When acting as a bus controller, a ‘timer value' is used to set both ‘message-to-message' and ‘minor time frame' timing for the 1553 interface. It is word ‘6' in the command block (Section 3.1.4) on page 35 of the 1553 programmers reference I was sent. What is the unit base of this timer value (1ms, us, etc.)? Upon looking through the Actel 1553 Handbook, it sounds like this would depend on the TCLK value you use in your hardware configuration, but I don’t see it stated anywhere in the document.