Table of Contents
Chapter 15 CAN Clock Prescaler
1. Overview
• This blockdiagram (simplified) shows the integration of the CAN and the CAN Interface with the CAN clock
prescaler logic (1/C) and clock source selector.
MAIN
Osc.
• Remark: If the CLKCAN source is set either to main oscillator or to PLL output then the clock for the
CAN is not influenced by the clock modulation. If the CLKCAN source is set core clock CLKB then
the clock for the CAN is also modulated (if the clock modulator is enabled).
2. Features
• CAN clock source selectable out of Main Oscillation, Base Clock (CLKB) and PLL output
• Free programmable divide-by-C counter in the range of 1..16
• Individual clock disable function for each CAN controller
CAN Clock Prescaler
X
PLL
CK
FB
Clock Unit
CLKB
CLKB
CLKCAN
M
U
1/C
X
CLKCAN
Chapter 15 CAN Clock Prescaler
CAN
RX/TX
Controller
CAN
Interface
CLKB
D-Bus
1.Overview
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Table of Contents
