Im writing firmware for a custom reader for a custom chipset with a standard 7816 UART: today the firmware programming will work using T0/T1 over serial line, shortly, we will make it behave to suit the beta muscle CCID driver.
A technical question:
(a) when a reader is using a 7816 UART to send chars to the ICC, when does one set the "block guard time"?
Obviously, the timer must (1) be active before the onset of the start bit of the last char to be sent, and (2) the register with the relevant timer value must be prepared before (1).
(b) Is it normal practice to set the block guard time register once one has sent char 2 (of n)? and then activate the (prepared) timer upon actual receipt of the start bit of the last char?
Or, does one prepare this register upon detecting the start bit of char n-2 (versus char 2)?
Peter.
Say �good-bye� to spam, viruses and pop-ups with MSN Premium -- free trial offer! _______________________________________________ Muscle mailing list [EMAIL PROTECTED] http://lists.musclecard.com/mailman/listinfo/muscle
