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Product data sheet
Rev. 3.3 — 3 April 2012
75 of 132
Contactless reader IC
High byte reload value of the Timer0.
Low byte reload value of the Timer0.
If set, the timer stops immediately after receiving the first 4 bits. If
cleared the timer does not stop automatically.
Note: If LFO Trimming is selected by T0Start, this bit has no effect
5 to 4
00b: The timer is not started automatically
01b: The timer starts automatically at the end of the transmission
10b: Timer is used for LFO trimming without underflow (Start/Stop on
11b: Timer is used for LFO trimming with underflow (Start/Stop on
T0AutoRestart 1: the timer automatically restarts its count-down from T0ReloadValue,
after the counter value has reached the value zero.
0: the timer decrements to zero and stops.
The bit Timer1Irq is set to logic 1 when the timer underflows.
1 to 0
00b: The timer input clock is 13.56 MHz.
01b: The timer input clock is 211,875 kHz.
10b: The timer input clock is an underflow of Timer2.
11b: The timer input clock is an underflow of Timer1.
T0ReloadHi register (address 10h);
7 to 0
Defines the high byte of the reload value of the timer. With the start
event the timer loads the value of the registers T0ReloadValHi,
T0ReloadValLo. Changing this register affects the timer only at the
next start event.
T0ReloadLo register (address 11h);