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STTS75 数据表(PDF) 26 Page - STMicroelectronics |
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STTS75 数据表(HTML) 26 Page - STMicroelectronics |
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26 / 39 page ![]() Functional description STTS75 26/39 3.6 WRITE mode In this mode the master transmitter transmits to the STTS75 slave receiver. Bus protocol is shown in Figure 12. Following the START condition and slave address, a logic '0' (R/W = 0) is placed on the bus and indicates to the addressed device that word address will follow and is to be written to the on-chip address pointer. These modes are shown in the WRITE mode typical timing diagrams (see Figure 12, and Figure 13, and Figure 14 on page 27). Figure 12. Typical pointer set followed by an immediate READ from the configuration register Figure 13. Configuration register WRITE AI12279b 19 1 9 Repeat Start by Master ACK by STTS75 No ACK by STTS75 Stop Cond. by Master 1 0 0 1 A2 A1 A0 D7 D6 D5 D4 D3 D2 D1 D0 R/W Address Byte Data Byte 11 99 1 Start by Master Address Byte Pointer Byte ACK by STTS75 ACK by STTS75 00 1 A2 A1 A0 W 00 0 0 0 0 D1 D0 AI12280b 11 99 1 9 1 Start by Master Address Byte Pointer Byte ACK by STTS75 ACK by STTS75 ACK by STTS75 Stop Cond. by Master 00 1 A2 A1 A0 W 00 0 0 0 0 0 0 0 D4 D3 D2 D1 D0 D1 D0 Configuration Byte |
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