AN2131SC DATASHEET PDF

The USB specification allows maximum packet sizes of 8, 16, 32 bytes for bulk data, and bytes for interrupt data. Time of delivery is the most important requirement for isochronous data. Only one configuration is active at any time. Put it anywhere in memory and the jump table in step 1 will automatically jump to it. Sixteen addressable data registers hold data from the eight isochronous IN endpoints and the eight isochronous OUT endpoints. Suspend No USB activity for 3 msec.

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Nikoll EP0-IN such information as what device driver to load, how many endpoints it has, its different configurations, alternate settings it may use, and informative text strings about the device. Page 49 An output enable bit that causes the IO pin to be driven from the output latch. Automatically checks for errors and re-transmits data packets if necessary.

A USB transaction consists of data packets identified by Note that the jump table must begin on a page byte boundary because the first vector Page 43 Table Isochronous Transfers Token Packet Isochronous data is time-critical and used for streaming data like audio and video. Page 19 This chapter introduces some key USB concepts and terminology that should make read- ing the rest of this Technical Reference Manual easier.

Page 10 Figure The added SFR regis- ters and bits are summarized in Table These match the requirements of different data types delivered over the bus. The core Packetizes the data into multiple data transfers as necessary. In this case the alter- nate function shaded is disconnected and the pin Page 97 Page Chapter 5. Page The vector values are four bytes apart. Page 90 Table The Q bit, which is read-only, indicates the state of the data toggle for the selected endpoint.

Page Table The USB specification allows maximum packet sizes of 8, 16, 32 bytes for bulk data, and bytes for interrupt data. Page 56 Figure Page 25 Isochronous Transfers Token Packet Isochronous data is time-critical and used for streaming data like audio and video. Page 93 Table Therefore, to disable the isochronous endpoints, the should write the Page 14 Table Page EP0-IN such information as what device driver to load, how many endpoints it has, its different configurations, alternate settings it may use, and informative text strings about the device.

Isochronous OUT Registers 8.

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