Maxim-integrated DS4830 Optical Microcontroller Manuale Utente Scaricare il pdf (Pagina 136)

DS4830 User’s Guide

136

In compare mode, the timer module begins counting from 0x0000 and when the value in the GTV register matches the

value in the General Timer Compare Register (GTC), the GTIF interrupt flag is set to ‘1 ‘ which generates an interrupt if

enabled. When the match occurs, the timer reloads the GTV register with 0x0000 at the next timer clock.

16.1.2 – Clock Selection

There are three timer clock sources available in each timer module, core clock, peripheral clock and external clock. The

peripheral clock is twice the core clock. The external clock can be between 20MHz to 133MHz. The timer clock source

can be selected using CLK_SEL [1:0] bits in the GTCN register.

16.1.3 – Timer Clock Prescaler

Each timer has 6 different prescalers. The prescaler is selected by appropriately setting the GTPS [2:0] bits in the GTCN

1 2 ... 131 132 133 134 135 136 137 138 139 140 141 ... 226 227

Nessun commento

Maxim-integrated DS4830 Optical Microcontroller Manuale Utente Pagina 136