smart card clocking using NXP
You have to apply a clock to the smart-card. The baudrate used for communication is clockrate/372. So for a clock of 3.58Mhz you'll end up with a baud-rate of 9632.6 That's close enough to be read by an ordinary UART.

If you configure the UART for smart-card IO then you have to program the clock pin for UART functionality. If you don't it's just a ordinary GPIO.

Once done it will start to output the clock signal as defined in the baudrate registers. The actual communication will run with the slower (divided by 372) frequency.

The chapter is a bit misleading because in the manual they use baud-rate for both the clock and the acutal transmission speed.