USBx_OTGCTL field descriptions (continued)
Field Description
6
Reserved
This field is reserved.
This read-only field is reserved and always has the value 0.
5
DPLOW
D+ Data Line pull-down resistor enable
This bit should always be enabled together with bit 4 (DMLOW)
0 D+ pulldown resistor is not enabled.
1 D+ pulldown resistor is enabled.
4
DMLOW
D– Data Line pull-down resistor enable
0 D- pulldown resistor is not enabled.
1 D- pulldown resistor is enabled.
3
Reserved
This field is reserved.
This read-only field is reserved and always has the value 0.
2
OTGEN
On-The-Go pullup/pulldown resistor enable
0 If USB_EN is 1 and HOST_MODE is 0 in the Control Register (CTL), then the D+ Data Line pull-up
resistors are enabled. If HOST_MODE is 1 the D+ and D– Data Line pull-down resistors are engaged.
1 The pull-up and pull-down controls in this register are used.
Reserved This field is reserved.
This read-only field is reserved and always has the value 0.
43.4.9 Interrupt Status register (USBx_ISTAT)
Contains fields for each of the interrupt sources within the USB Module. Each of these
fields are qualified with their respective interrupt enable bits. All fields of this register are
logically OR'd together along with the OTG Interrupt Status Register (OTGSTAT) to
form a single interrupt source for the processor's interrupt controller. After an interrupt
bit has been set it may only be cleared by writing a one to the respective interrupt bit.
This register contains the value of 0x00 after a reset.
Address:
4007_2000h base + 80h offset = 4007_2080h
Bit 7 6 5 4 3 2 1 0
Read STALL ATTACH RESUME SLEEP TOKDNE SOFTOK ERROR USBRST
Write w1c w1c w1c w1c w1c w1c w1c w1c
Reset
0 0 0 0 0 0 0 0
USBx_ISTAT field descriptions
Field Description
7
STALL
Stall Interrupt
In Device mode this bit is asserted when a STALL handshake is sent by the SIE.
Table continues on the next page...
Memory map/Register definitions
K22F Sub-Family Reference Manual, Rev. 4, 08/2016
1090 NXP Semiconductors
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