Datasheet TC1321 (Microchip) - 8

TC1321
Write 1-Byte Format S Address R/W ACK Command ACK Data ACK P 7-Bits 0 8-Bits 8-Bits Slave Address Command Byte: selects Data Byte: data goes which register you are into the register set writing to. by the command byte. Write 2-Byte Format S Address R/W ACK Command ACK Data ACK Data ACK P 7-Bits 0 8-Bits 8-Bits 8-Bits Slave Address Command Byte: selects Data Byte: data goes which register you are into the register set writing to. by the command byte. Read 1-Byte Format S Address R/W ACK Command ACK S Address R/W ACK Data NACK P 7-Bits 0 8-Bits 7-Bits 1 8-Bits Slave Address Command Byte: selects Slave Address: repeated Data Byte: reads from which register you are due to change in data the register set by the reading from. flow direction. command byte. Read 2-Byte Format S Address R/W ACK Command ACK S Address R/W ACK Data ACK Data NACK P 7-Bits 0 8-Bits 7-Bits 1 8-Bits 8-Bits Slave Address Command Byte: selects Slave Address: repeated Data Byte: reads from which register you are due to change in data the register set by the reading from. flow direction. command byte. Receive 1-Byte Format S Address R/W ACK Data NACK P 7-Bits 1 8-Bits S = START Condition Data Byte: reads data from P = STOP Condition the register commanded by Shaded = Slave Transmission the last read-byte or write- byte transmission. Receive 1-Byte Format S Address R/W ACK Data ACK Data NACK P 7-Bits 1 8-Bits 8-Bits S = START Condition Data Byte: reads data from P = STOP Condition the register commanded by Shaded = Slave Transmission the last read-byte or write- byte transmission.
FIGURE 3-1:
SMBus/I2C Protocols. DS21387C-page 8  2010 Microchip Technology Inc. Document Outline TC1321 10-Bit Digital-to-Analog Converter with Two-Wire Interface 1.0 Electrical Characteristics 2.0 Pin Descriptions TABLE 2-1: Pin Function Table 2.1 External Voltage Reference Input (VREF) 2.2 Bi-Directional Serial Data Input and Output (SDA) 2.3 Serial Clock Input (SCL) 2.4 Supply Power Ground (VSS) 2.5 Output (VOUT) 2.6 No Connection (NC) 2.7 Output (DAC-OUT) 2.8 Positive Power Supply Input (VDD) 3.0 Detailed Description 3.1 Reference Input 3.2 Output Amplifier 3.3 Standby Mode TABLE 3-1: Standby Mode Operation 3.4 SMBus Slave Address FIGURE 3-1: SMBus/I2C Protocols. 4.0 Serial Port Operation TABLE 4-1: TC1321 Serial Bus Conventions 4.1 START Condition (START) 4.2 Address Byte 4.3 Acknowledge (ACK) 4.4 Data Byte 4.5 Stop Condition (STOP) FIGURE 4-1: SMBus/I2CTiming Diagrams. 4.6 Register Set and Programmer’s Model TABLE 4-2: TC1321 Command Set (READ_BYTE and WRITE_BYTE) TABLE 4-3: Configuration Register (CONFIG), 8-Bit, Read/Write TABLE 4-4: Data Register (DATA), 10-Bit, Read/Write 4.7 Register Set Summary TABLE 4-5: TC1321 Register Set Summary 5.0 Packaging Information 5.1 Package Marking Information Appendix A: Revision History Product Identification System Worldwide Sales and Service