Controller for ATAPI mode operation and ATAPI driven universal serial bus mode operation and methods for making the same

A controller for use in a mass storage peripheral device comprising:

• a block decoder/encoder for processing data to and from a media of the mass storage peripheral device;
• an interface configured to process data and control signals for selectively communicating data to and from the mass storage peripheral device during operation in a first mode, the interface being shared to process data and control signals in other than the first mode, and
• logic configured to process data and control signals for selectively communicating data to and from the mass storage peripheral device during operation in a second mode, the logic for operation in the second mode borrowing data transfer control logic of the interface when exclusively operating in the second mode:
• wherein the logic is universal serial bus. (USB) logic and the interface is an ATAPI interface and the data transfer control logic utilized by the USB logic and implemented by the ATAPI interface includes signals HA2, HA1, HA0, DMACK#, HRD#, HWR#, HRST#, ARST#, CS3FX#, and CS1FX#.

A method for making a controller for use in a peripheral device, the controller being capable for operating the peripheral device in one of a first mode and a second mode, comprising;

• integrating a first interface to the controller, the first interface being configured to control data transfers to and from the peripheral device in the first mode and enable processing of data transfers to and from the peripheral device in other than the first mode;
• and
• integrating a logic block to the controller, the logic block being configured to facilitate data transfers to and from the peripheral device in the second mode, the logic block being configured to use data transfer control from the first interface to complete the data transfers in the second mode when exclusively operating in the second mode, wherein the first mode is an ATAPI mode and the second mode is a USB mode, and the first interface is an ATAPI interface and the logic block is a USB logic block, and the integrating of the USB logic block further includes.
• integrating a USB pad cell to the USB logic block, the USB pad cell providing connection to a USB cable and to the ATAIP interface, and
• integrating a USB core logic to the USB logic block, the USB core logic is configured to control data transfers in the USB mode, and the USB core logic is configured to interface with a microprocessor interface, the integrating of the USB core logic further includes.
• integrating a smart FIFO to the USB core logic;
• integrating an I/O select to the USB core logic;
• integrating an application block to the USB core logic:
• and integrating a USB device controller to the USB core logic.

A controller for use in a compact disc rewritable (CD-RW) peripheral device, comprising:

• a block decoder/encoder for processing data to and from a media of the CD-RW peripheral device;
• an ATAPI interface configured to process data and control signals for selectively communicating data to and from the CD-RW peripheral device during operation in an ATAPI mode;
• and
• universal serial bus (USB) logic configured to process data and control signals for selectively communicating data to and from the CD-RW peripheral device during operation in a USB mode, the USB logic is configured to utilize data transfer control logic that is part of the ATAPI interface, the USB logic includes,
• a USB pad cell that provides connection to and from a USB cable and the ATAPI interface;
• and
• USB core logic in communication with the USB pad cell, the ATAPI interface, and a microprocessor interface:
• the USB core logic includes,
• a smart FIFO for coordinating USB data transfers to and from the CD-RW peripheral device:
• an I/O select that is placed into either the ATAPI mode or the USB mode:
• an application unit having a plurality of registers, at least one register being an enable register for setting the I/O select, and
• a USB device controller for performing serializing and de-serializing of data being transferred in the USB mode.

A controller for use in an optical storage device, comprising:

• a block decoder/encoder for processing data to and from a media of the optical storage device;
• an ATAPI interface configured to process data and control signals for selectively communicating data to and from the optical storage device during operation in an ATAPI mode, the ATAPI interface being shared to process data and control signals in other than the ATAPI mode;
• and
• universal serial bus (USB) logic configured to process data and control signals for selectively communicating data to and from the optical storage device during operation in a USB mode, the USB logic for operation in the USB mode borrowing data transfer control logic of the ATAPI interface when exclusively operating in the USB mode, wherein the USB logic includes,
• a USB pad cell that provides connection to and from a USB cable and the ATAPI interface;
• and
• USB core logic in communication with the USB pad cell, the ATAPI interface, and a microprocessor interface, and the USB core logic includes,
• a smart FIFO for coordinating USB data transfers to and from the optical storage device;
• an I/O select that is placed into either the ATAPI mode or the USB mode;
• an application unit having a plurality of registers, at least one register being an enable register for setting the I/O select:
• and
• a USB device controller for performing serializing and de-serializing of data being transferred in the USB mode.