HCS08 datasheet(302/374 Pages) NXP

302 / 374 page

Universal Serial Bus Device Controller (S08USBV1)

MC9S08JM60 Series Data Sheet, Rev. 5

302

Freescale Semiconductor

17.3.6

Interrupt Enable Register (INTENB)

The INTENB contains enabling bits for each of the interrupt sources within the USB module. Setting any of these

bits will enable the respective interrupt source in the INTSTAT register. This register will contain the value of 0x00

after a reset, i.e. all interrupts disabled.

ERRORF

Error Flag — This bit is set when any of the error conditions within the ERRSTAT register has occurred. The

firmware must then read the ERRSTAT register to determine the source of the error.

0 No error conditions within the ERRSTAT register have been detected

1 Error conditions within the ERRSTAT register have been detected

USBRSTF

USB Reset Flag —This bit is set when the USB module has decoded a valid USB reset. When asserted, this bit

will inform the MCU to automatically write 0x00 to the address register and to enable endpoint 0. USBRSTF is

set once a USB reset has been detected for 2.5

μs. It will not be asserted again until the USB reset condition has

been removed, and then reasserted.

0 No USB reset observed

1 USB reset detected

321

STALL

RESUME

SLEEP

TOKDNE

SOFTOK

ERROR

USBRST

Reset

000

Figure 17-9. Interrupt Enable Register (INTENB)

Table 17-10. INTENB Field Descriptions

Field

Description

STALL

STALL Interrupt Enable — Setting this bit will enable STALL interrupts.

0 Interrupt disabled

1 Interrupt enabled

RESUME

RESUME Interrupt Enable — Setting this bit will enable RESUME interrupts.

0 Interrupt disabled

1 Interrupt enabled

SLEEP

SLEEP Interrupt Enable — Setting this bit will enable SLEEP interrupts.

0 Interrupt disabled

1 Interrupt enabled

TOKDNE

TOKDNE Interrupt Enable — Setting this bit will enable TOKDNE interrupts.

0 Interrupt disabled

1 Interrupt enabled

SOFTOK

SOFTOK Interrupt Enable — Setting this bit will enable SOFTOK interrupts.

0 Interrupt disabled

1 Interrupt enabled

Table 17-9. INTSTAT Field Descriptions (continued)

Field

Description

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