SDA6000 Datasheet, PDF (166/380 Pages) Infineon Technologies AG – Teletext Decoder with Embedded 16-bit Controller

SDA 6000
Peripherals
BPS1 TyI
f _{hw_clk}
2ⁿ : 1
TyR
*⁾
Edge
Select
Core Timer Ty
Up/Down
TyOTL
TyOE
TyOUT
Interrupt
Request
Auxiliary Timer Tx
TxIR
Interrupt
Request
TxR
x = 2, 4 y = 3
TxI
UES11201
Note: Line ‘*’ is only affected by over/underflows of T3, but NOT by software
modifications of T3OTL.
Figure 7-10 Concatenation of Core Timer T3 and an Auxiliary Timer
Auxiliary Timer in Reload Mode
Reload mode for the auxiliary timers T2 and T4 is selected by setting bit field TxM in the
respective register TxCON to ‘100_B’. In reload mode the core timer T3 is reloaded with
the contents of an auxiliary timer register, triggered by one of two different signals. The
trigger signal is selected the same way as the clock source for counter mode (see
Table 7-6), i.e. a transition of the auxiliary timer’s input or the output toggle latch T3OTL
may trigger the reload.
Note: When programmed for reload mode, the respective auxiliary timer (T2 or T4) stops
independent of its run flag T2R or T4R.
Users Manual
7 - 15
2000-06-15