Information

USBDCD_CLOCK field descriptions (continued)
Field Description
The unit of measure is programmed in CLOCK_UNIT. The valid range is from 1 to 1023 when clock unit is
MHz and 4 to 1023 when clock unit is kHz. Examples with CLOCK_UNIT = 1:
• For 48 MHz: 0b00_0011_0000 (48) (Default)
• For 24 MHz: 0b00_0001_1000 (24)
Examples with CLOCK_UNIT = 0:
• For 100 kHz: 0b00_0110_0100 (100)
• For 500 kHz: 0b01_1111_0100 (500)
1
Reserved
This field is reserved.
This read-only field is reserved and always has the value 0.
0
CLOCK_UNIT
Unit of Measurement Encoding for Clock Speed
Specifies the unit of measure for the clock speed.
0 kHz Speed (between 1 kHz and 1023 kHz)
1 MHz Speed (between 1 MHz and 1023 MHz)
Memory map/Register definition
K20 Sub-Family Reference Manual, Rev. 1.1, Dec 2012
1078
Preliminary
Freescale Semiconductor, Inc.
General Business Information