
4-4. Configuration in USB mode
§Basic configuration
Item | Specification | |
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USB standard | Specification Rev2.0 Full Speed | |
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Power supply | Bus power supply / | |
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Device class | Vendor definition | |
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Interrupt (coordinate) | 1ms | |
transfer interval | ||
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End point buffer size | EP0: 8byte EP1: 5byte (EP0: control transfer, EP1: interrupt transfer) | |
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§Connection with Host
Coordinate data, correction value or other various output data are all output to the host as a response to IN token. Output coordinate in coordinate data mode and correction data mode is output in the interrupt transfer, while other data is output to the host with control transfer.
| Host | ||
Buffer | Control transfer | End Point 0 | |
(Descriptor, Device Request (command)) | IN/OUT | ||
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Buffer | Interrupt transfer | End Point 1 | |
(Coordinate data) | IN | ||
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4-5. Panel ID setting (USB mode)
If two (three or four) touch screens to the same host are connected simultaneously, each
iProduct is set to “0” or “1” and this value is identified by the |
| VCC |
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host as panel ID. |
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| H | ||
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JP4 | JP5 | iProduct | Panel ID |
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L | L | 00h | 0 |
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H | L | 01h | 1 |
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L | H | 02h | 2 |
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H | H | 03h | 3 |
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JP4
JP5
L VCC
H
L
Document No. | 8 | Version 1.0 ©2008 DMC Co., Ltd. |