Fujitsu 8FX User Manual

MB95630H Series
MN702-00009-2v0-E FUJITSU SEMICONDUCTOR LIMITED 589
CHAPTER 27 NON-VOLATILE REGISTER (NVR) INTERFACE
27.4 Notes on Main CR Clock Trimming
27.4 Notes on Main CR Clock Trimming
This section provides notes on main CR clock trimming.
After a hardware reset, the 10-bit main CR clock trimming value and the 5-bit temperature
dependent adjustment value will be loaded from the NVR Flash area to registers in the NVR
I/O area.
Table 27.4-1 shows the step size of main CR clock trimming.
Table 27.4-1 Step Size of Main CR Clock Trimming
Function
Coarse trimming value
CRTH[4:0]
Fine trimming value
CRTL[4:0]
To achieve the minimum frequency 0b11111 0b11111
To achieve the maximum frequency 0b00000 0b00000
Step Size 220 kHz to 300 kHz 14 kHz to 20 kHz

Fujitsu 8FX Specifications

General

Brand	Fujitsu
Model	8FX
Category	Computer Hardware
Language	English