TC1796
System Units (Vol. 1 of 2)
Clock System and Control
User’s Manual 3-40 V2.0, 2007-07
Clock, V2.0
3.3.5 Fractional Divider Register Implementations
Table 3-10 shows the implementations specific differences of the fractional divider
functionalities.
Table 3-10 FDR Register Implementations
FDR Register Suspend Mode Acknowledge
Operation
1)
1) This column shows whether a suspend acknowledge from a FDR controlled module depends on the module’s
state or not. If a suspend acknowledge depends from the module state, typically module operations such as
serial transmissions are terminated before a suspend request is acknowledged back to the fractional divider.
Note that bit FDR.SM must be cleared (granted suspend mode selected) when using the suspend mode
acknowledge/grant functionality. If immediate suspend mode is selected (FDR.SM = 1), suspend mode is
entered at once (if FDR.SC not equal 00
B
) independently from the suspend acknowledge answer from the
module.
ENHW
2)
2) This column shows whether the External Clock Enable input of a fractional divider is controlled by on-chip
hardware (source module see comment) or not (“–”).
Reset Ext.
Divider
3)
3) This column shows whether the Reset External Divider output of the fractional divider is used (purpose see
comment) or not (“–”).
CAN_FDR Acknowledge depends on module state – –
ADC0_FDR Acknowledge depends on module
states
– resets analog
parts of
ADCs
FADC_FDR Acknowledge depends on module state – –
GPTA0_FDR Always immediately acknowledged;
independently from module states
from
MultiCAN
–
MLI0_FDR Acknowledge depends on module state – –
MLI1_FDR Acknowledge depends on module state – –
MSC0_FDR Acknowledge depends on module state from
MultiCAN
–
MSC1_FDR Acknowledge depends on module state from
MultiCAN
–
SSC0_FDR Always immediately acknowledged;
independently from module state
from
MultiCAN
–
SSC1_FDR Always immediately acknowledged;
independently from module state
from
MultiCAN
–
SCU_SCLKFDR Always immediately acknowledged;
independently from module state
– external
divider-by-2
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