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BD34602FS-E2 Datasheet(PDF) 8 Page - Rohm |
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BD34602FS-E2 Datasheet(HTML) 8 Page - Rohm |
8 / 33 page 8/29 Datasheet Datasheet BD34602FS-M TSZ02201-0C2C0E100310-1-2 © 2015 ROHM Co., Ltd. All rights reserved. 22.Oct.2015 Rev.001 www.rohm.com TSZ22111・15・001 (2) I 2C-BUS FORMAT MSB LSB MSB LSB MSB LSB S Slave Address A Select Address A Data A P 1bit 8bit 1bit 8bit 1bit 8bit 1bit 1bit S = Start conditions (Recognition of start bit) Slave Address = Recognition of Slave Address. 7 bits in upper order are voluntary. The least significant bit is “L” due to writing. A = ACKNOWLEDGE bit (Recognition of acknowledgement) Select Address = Select every of volume, bass and treble. Data = Data on every volume and tone. P = Stop condition (Recognition of stop bit) (3) I 2C-BUS Interface Protocol 1)Basic form S Slave Address A Select Address A Data A P MSB LSB MSB LSB MSB LSB 2)Automatic increment (For an assigned Select Address increases (+1) according to the number of data.) S Slave Address A Select Address A Data1 A Data2 A ・・・・ DataN A P MSB LSB MSB LSB MSB LSB MSB LSB MSB LSB No.1. Data1 is set as data of address specified by Select Address. No.2. Data2 is set as data of next address from the address specified by No.1. No.3. DataN is set as data of address incremented N-1 times from the address specified by No.1. The Select Address is circulated by the automatic increment function, as shown below (hex). 3)Configuration unavailable for transmission (In this case, only Select Address1 is set. S Slave Address A Select Address1 A Data A Select Address 2 A Data A P MSB LSB MSB LSB MSB LSB MSB LSB MSB LSB ( Note)If any data is transmitted as Select Address 2 next to data, it is recognized as data, not as Select Address 2. (4) Slave Address Because the Slave Address can be changed by the setting of CS, it is possible to use two chips at the same time on identical BUS. CS Terminal Voltage Condition A6 A5 A4 A3 A2 A1 A0 R/W Hex CS = Low : -0.5V to 1.0V 1 0 0 0 0 0 0 0 80 CS = High : 2.3V to VCC 1 0 0 0 0 1 0 0 84 Establish the voltage of CS terminal in the condition to have been defined. →01→28→29→2A→2B→2C→2D→30→31→32→33→34→35 |
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