Information

USBDCD_CONTROL field descriptions (continued)
Field Description
Determines whether the charger detection sequence is initiated.
0b0 Do not start the sequence. Writes of this value have no effect.
0b1 Initiate the charger detection sequence. If the sequence is already running, writes of this value
have no effect.
23–17
Reserved
This read-only field is reserved and always has the value zero.
16
IE
Interrupt Enable
Enables/disables interrupts to the system.
0b0 Disable interrupts to the system.
0b1 Enable interrupts to the system.
15–9
Reserved
This field is reserved.
8
IF
Interrupt Flag
Determines whether an interrupt is pending
0b0 No interrupt is pending.
0b1 An interrupt is pending.
7–1
Reserved
This read-only field is reserved and always has the value zero.
0
IACK
Interrupt Acknowledge
Determines whether the interrupt is cleared.
0b0 Do not clear the interrupt.
0b1 Clear the IF bit (interrupt flag).
43.4.2 Clock Register (USBDCD_CLOCK)
Address: USBDCD_CLOCK is 4003_5000h base + 4h offset = 4003_5004h
Bit 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
R
0
W
Reset
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Bit
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
R
0
CLOCK_SPEED
0
CLOCK_
UNIT
W
Reset
0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 1
Chapter 43 USB Device Charger Detection Module (USBDCD)
K20 Sub-Family Reference Manual, Rev. 6, Nov 2011
Freescale Semiconductor, Inc. 1095