Clock Structure; Figure 14-3: Clock Structure Of The Fcan System - NEC V850E/CA2 JUPITER Preliminary User's Manual

14.2.3 Clock structure

All functional blocks within the FCAN system are supplied by a unique clock (f
internal system clock (f
f
PCLK
Note: CAN module 3 and CAN module 4 are available in the derivatives µPD703129 (A) and
µPD703129 (A1) only.
A functional block for a global time system is integrated in the FCAN system. That functional block is
supplied by the global time system clock (f
scales f and is controlled by the CGCS register.
GTS
The time base of the global time system is realised by the 16-bit free-running counter, the CAN global
time system counter (CGTSC). Time stamp information is captured from the CGTSC counter.
438
Chapter 14 FCAN Interface Function
).
PLCK

Figure 14-3: Clock Structure of the FCAN System

f
General
MEM
Prescaler
GTS
Preliminary User's Manual U15839EE1V0UM00
f
Time System
GTS
Prescaler
CAN 1
f
CAN1
Baudrate
Generator
CAN 2
f
CAN2
Baudrate
Generator
Note
CAN 3
f
CAN3
Baudrate
Generator
Note
CAN 4
f
CAN4
Baudrate
Generator
), which is derived from f
) derived from the
MEM
Time System
Counter
. The time system prescaler
MEM