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SIG61 Datasheet(PDF) 10 Page - Yamar Electronics Ltd. |
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SIG61 Datasheet(HTML) 10 Page - Yamar Electronics Ltd. |
10 / 15 page Preliminary and proprietary Information of YAMAR Electronics Ltd. Subject to change without notice. © 2010 Yamar Electronics Ltd. 10 DS-SIG61 R0.932 Figure 4.4 - Read-change command Command type 4: Sleep command. This type of command consist of 5 bytes: sync break, sync field, “3C” Hex, “00” Hex and checksum. The sleep command identifier is “3C”Hex as in LIN2.0 specifications and the following data byte “00”Hex. Upon reception of sync break, sync field, “3C”Hex and “00”Hex bytes, a device enters sleep mode immediately and as a result it’s the following command bytes are ignored. Figure 4.5 - Sleep command Command type 5: Change Frequency command. This type of command consists of 5 bytes - sync break, sync field, “FE” Hex, “00” Hex and checksum. The change frequency command identifier is “FE” Hex and the following data byte is “00”Hex. Upon reception of sync break, sync field, “FE” Hex and “00” Hex bytes the frequency changes from F1 to F0, or vise versa. Checksum calculation follows the description above. Figure 4.6 - Frequency Change command 4.2 Power Management The SIG61 device features Sleep mode for power saving. Entering the Sleep mode, as well as waking up, can be initiated locally, by means of dedicated input pins, or remotely through activity (proper messages) over the bus. 4.2.1 Entering Sleep mode The SIG61 can enter sleep mode by any of the following ways: 1. The device nSleep pin is lowered. 2. Sleep command from a remote master is received. 3. The AutoSleep pin is set HIGH and no reception occurred for about 8 seconds. 4.2.2 Device Outputs during Sleep During Sleep mode, the SIG61 8 output pins remain unchanged if the device has entered this mode due to a Sleep command from the Master or by lowering the Pin nSleep. However if the device entered the Sleep mode due to the AutoSleep function, SIG61 will lower all the outputs to "0". Sync break Sync Field 0xFE Zero byte/bytes Checksum Sync break Sync Field 0x3C Zero byte/bytes Checksum Master Slave Sync break Sync Field P1, P0, 1, 0, Address Data (8 input bits) Checksum |
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