Analog Devices ADSP-SC58 Series Hardware Reference Manual page 2068

ADSP-SC58x TWI Register Descriptions
Table 30-8: TWI_CTL Register Fields (Continued)
Bit No.
(Access)
6:0 PRESCALE
(R/W)
30–20
Bit Name
SCLK0_0 Prescale Value.
The TWI_CTL.PRESCALE holds the pre-scaled value for the TWI internal time ref-
erence. This reference is derived from SCLK0_0 according to the formula:
TWI_CTL.PRESCALE = f
The TWI_CTL.PRESCALE specifies the number of system clock (SCLK0_0) periods
used in the generation of one internal time reference. The value of
TWI_CTL.PRESCALE must be set to create an internal time reference with a period
of 10 MHz. It is represented as a 7-bit binary value.
ADSP-SC58x/ADSP-2158x SHARC+ Processor Hardware Reference
Description/Enumeration
/10MHz
SCLK0_0