ISP1160 查看數據表（PDF） - Philips Electronics

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ISP1160

Embedded Universal Serial Bus Host Controller

Philips Electronics 

Philips Semiconductors

ISP1160

Embedded USB Host Controller

To re-enable the interrupt generation:

1. Set all bits in the HcµPInterrupt register.

2. Set the InterruptPinEnable bit to logic 1.

Remark: The InterruptPinEnable bit in the HcHardwareConfiguration register latches

the interrupt output. When this bit is set to logic 0, the interrupt output will remain

unchanged, regardless of any operations on the interrupt control registers.

If INT1 is asserted, and the Host Controller Driver (HCD) wishes to temporarily mask

off the INT signal without clearing the HcµPInterrupt register, the following procedure

should be followed:

1. Make sure that the InterruptPinEnable bit is set to logic 1.

2. Clear all bits in the HcµPInterruptEnable register.

3. Set the InterruptPinEnable bit to logic 0.

To re-enable the interrupt generation:

1. Set all bits in the HcµPInterruptEnable register according to the HCD

requirements.

2. Set the InterruptPinEnable bit to logic 1.

9. Host Controller (HC)

9.1 HC’s four USB states

The ISP1160’s USB HC has four USB states—USBOperational, USBReset,

USBSuspend and USBResume—that define the HC’s USB signalling and bus states

responsibilities. The signals are visible to the Host Controller Driver (HCD) via the

ISP1160 USB HC’s control registers.

9397 750 11371

Product data

Rev. 04 — 04 July 2003

© Koninklijke Philips Electronics N.V. 2003. All rights reserved.

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