Figure 530. Connection Of Clock Calibration On Can Unit To M_Can - STMicroelectronics SPC572L series Reference Manual

CAN Subsystem
input cu_pclk. The calibrated time quanta clock cu_tqc is routed to all CAN instances. In
case of a successful calibration this is signaled via cu_cok.
RC Osc
PLL
clk_select
hclk
cu_hclk
cu_reset
cu_csc
cu_cwe
Calibration
cu_int
CPU accesses to the Clock Calibration on CAN unit use the Host clock connected to
cu_hclk. Clock calibration is bypassed when CCFG.BCC = '1'. In this case, the clock from
input cu_pclk is routed through a clock divider to output cu_tqc (see
1074/2058

Figure 530. Connection of Clock Calibration on CAN unit to M_CAN

XOSC
÷
1..64
cu_pclk
cu_tqc
cu_cok
cu_cce
Clock
cu_spt
on
cu_mrx
CAN
cu_calf
cu_qmrx
cu_aff
cu_rx
DocID027809 Rev 4
to other
M_CAN
instances
m_can_hclk
m_can_cclk
M_CAN
m_can_fe2
m_can_rx
can_rx
Figure 531).
RM0400