Datenblatt-Suchmaschine für elektronische Bauteile |
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CFA631 Datenblatt(PDF) 49 Page - Crystalfontz America, Inc. |
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CFA631 Datenblatt(HTML) 49 Page - Crystalfontz America, Inc. |
49 / 81 page Crystalfontz Data Sheet Release 2014-11-17 www.crystalfontz.com CFA631 Intelligent Display Modules Page 49 <bus reset> //Required <address_phase> //Must be "Match ROM" or "Skip ROM" <write_phase> //optional, but at least one of write_phase or read_phase must be sent <read_phase> //optional, but at least one of write_phase or read_phase must be sent type: 0x14 = 2010 valid data_length is 2 to 16 data[0] = device_index (0-32 valid) data[1] = number_of_bytes_to_read (0-14 valid) 0 data[2-15] = data_to_be_written[data_length-2] If device_index is 32, then no address phase will be executed. If device_index is in the range of 0 to 31, and a 1-Wire device was detected for that device_index at power on, then the write cycle will be prefixed with a "Match ROM” command and the address information for that device. If data_length is 2, then no specific write phase will be executed (although address information may be written independently of data_length depending on the value of device_index). If data_length is greater than 2, then data_length-2 bytes of data_to_be_written will be written to the 1- Wire bus immediately after the address phase. If number_of_bytes_to_read is 0, then no read phase will be executed. If number_of_bytes_to_read is not 0, then number_of_bytes_to_read will be read from the bus and loaded into the response packet. The return packet will be: type: 0x40 | 0x14 = 0x54 = 8410 data_length = 2 to 16 data[0] = device index (0-31 valid) data[data_length-2] = Data read from the 1-Wire bus. This is the same as number_of_bytes_to_read from the command. data[data_length-1] = 1-Wire CRC 21 (0x15): Set Up Live Fan Or Temperature Display (SCAB Required) You can configure the CFA631+SCAB to automatically update a portion of the display with a “live” RPM or temperature reading. Once the display is configured using this command, the CFA631+SCAB will continue to display the live reading on the display without host intervention. The Set Up Live Fan or Temperature Display is one of the items stored by command 4 (0x04): Store Current State As Boot State (Pg. 39). You can configure the CFA631+SCAB to immediately display fan speeds or system temperatures as soon as power is applied. The live display is based on a concept of display slots. There are 4 slots. Each of the 4 slots may be enabled or disabled independently. Any slot may be requested to display any data that is available. For instance, slot 0 could display temperature sensor 3 in °C, while slot 1 could simultaneously display temperature sensor 3 in °F. Any slot may be positioned at any location on the display, as long as all the digits of that slot fall fully within the display area. It is legal to have the display area of one slot overlap the display area of another slot, but senseless. This situation should be avoided in order to have meaningful information displayed. |
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Ähnliche Beschreibung - CFA631 |
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