Texas Instruments TAS3002 manual 8.10 I2C Serial Port Timing Characteristics, 7. I 2C Bus Timing

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8.10 I2C Serial Port Timing Characteristics

8.10 I2C Serial Port Timing Characteristics

		MIN	MAX	UNIT

f(SCL)	SCL clock frequency	0	100	kHz
t(buf)	Bus free time between start and stop	4.7		∝s
t(low)	Low period of SCL clock	4.7		∝s
t(high)	High period of SCL clock	4.0		∝s
th(sta)	Hold time repeated start	4.0		∝s
tsu(sta)	Setup time repeated start	4.7	20	∝s
th(dat)	Data hold time (See Note 6)	0		∝s
tsu(dat)	Data setup time	250		ns
tr	Rise time for SDA and SCL		1000	ns
tf	Fall time for SDA and SCL		300	ns
tsu(sto)	Setup time for stop condition	4.0		∝s
C(b)	Capacitive load for each bus line		400	pF

NOTE 6: A device must internally provide a hold time of at least 300 ns for the SDA signal to bridge the undefined region of the falling edge of SCL.

P SP

SDA	Valid
t(buf)	th(dat)

trtsu(dat)

	Change
	of Data
SCL	Allowed
SCL

Data

Line

Stable

tf

th(sta)

NOTE: t(low) is measured from the end of tf to the beginning of tr. t(high) is measured from the end of tr to the beginning of tf.

tsu(sta)

tsu(sto)

th(sta)

Figure 8−7. I 2C Bus Timing

8−6

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Contents Digital Audio Processor With Codec Data ManualTAS3002 2001IMPORTANT NOTICE 1.1 Description 1.2Features1 Introduction 1.3Functional Block Diagram Figure 1−1. TAS3002 Block Diagram Figure 1−2. TAS3002 Terminal Assignments 1.4 Terminal Assignments1.5 Terminal Functions Table 1−1. TAS3002 Terminal FunctionsTable 1−1. TAS3002 Terminal Functions Continued Page Table 2−1. Serial Interface Options 2 Audio Data Formats2.1 Serial Interface Formats … … … … … … … …2.2 Digital Output Modes … … … …… … … … 2.2.2I2S Serial-InterfaceFormatFigure 2−2. I 2S Serial-InterfaceFormat … … … …… … … … 2.2.3MSB-Left-Justified, Serial-InterfaceFormat… … … … … … … …UNIT 2.3 Switching CharacteristicsPARAMETER tcSCLK SCLK LRCLK tdSDOUT SDOUT1 SDOUT2 SDOUT0Page 3.2 Analog Output 3 Analog Input/Output3.1 Analog Input 3.2.1Direct Analog OutputFigure 3−3. Analog Output With External Amplifier 3.2.2Analog Output With GainFigure 3−2. VCOM Decoupling Network Figure 3−4. TAS3002 Reference Voltage Filter 3.2.3Reference Voltage FilterTAS3002 Page 4.2 Software Soft Mute 4.1 Soft Volume Update4 Audio Control/Enhancement Functions 4.3 Input Mixer ControlFigure 4−1. TAS3002 Mixer Function 4.4 Mono Mixer Control4.5 Treble Control Figure 4−2. De-EmphasisMode Frequency Response 4.6 Bass Control4.7 De-EmphasisMode DM 4.8 Analog Control Register 40h Table 4−1. Analog Control Register Description4.9.2Loudness Gain 4.9 Dynamic Loudness Contour4.9.1Loudness Biquads 4.9.3Loudness Contour Operation4.10 Dynamic Range Compression/Expansion DRCE 4.11 AllPass FunctionTable 4−2. Main Control Register 1 Description 4.12 Main Control Register 1 01h4.13 Main Control Register 2 43h Table 4−3. Main Control Register 2 DescriptionPage 5.1 Biquad Block Figure 5−1. Biquad Cascade Configuration5 Filter Processor 5.1.1Filter CoefficientsPage 6.2 I2C Protocol 6 I2C Serial Control Interface6.1 Introduction Figure 6−1. Typical I 2C Data Transfer SequenceTable 6−1. I 2C Protocol Definitions 6.3 Operation6.3.1Write Cycle Example Table 6−2. I 2C Address Byte Table6.3.2TAS3002 I2C Readback Example 6.3.3I2C Wait States6.4.2Write Byte Protocol 6.4 SMBus Operation6.4.1Block Write Protocol Table 6−3. I 2C Wait States6.4.3Wait States 6.4.4TAS3002 SMBus ReadbackPage 7.2.2Reset 7.2 Power-Up/Power-DownReset7.2.1Power-UpSequence 7 Microcontroller Operation7.2.4Fast Load Mode 7.2.3Reset CircuitFigure 7−1. TAS3002 Reset Circuit TAS30027.3 Power-DownMode 7.2.5Codec Reset7.4 Test Mode 7.3.1Power-DownTiming SequenceFigure 7−2. Power-DownTiming Sequence 7.5 Internal Interface7.6.2GPI Architecture Table 7−1. GPI Terminal ProgrammingStart Power Up Initialize Default EEPROM Figure 7−3. Internal Interface Flow ChartRestore Volume and MCR Slave Write GPI Power Down7.7 External EEPROM Memory Maps Table 7−2. 512-ByteEEPROM Memory Map 2.0 ChannelsFUNCTION ADDRESSBYTE NUMBER TAS3002FUNCTION TAS3002 ADDRESSNUMBER CATEGORYFUNCTION TAS3002 ADDRESSNUMBER CATEGORY8.2 Recommended Operating Conditions 8 Electrical CharacteristicsStatic Digital Specifications Figure 8−1. ADC Digital Filter Characteristics 8.4 ADC Digital FilterFigure 8−4. ADC High-PassFilter Characteristics 8.5 Analog-to-DigitalConverter8.6 Input Multiplexer 8.7 DAC Interpolation Filter8.8 Digital-to-AnalogConverter 8.9 DAC Output Performance Data8.10 I2C Serial Port Timing Characteristics Figure 8−7. I 2C Bus TimingTAS3002 9 System DiagramsFigure 9−1. Stereo Application ClockTAS3002 TAS3001Figure 9−2. TAS3002 Device, 2.1 Channels PLASTIC QUAD FLATPACK 10 Mechanical InformationPFB S-PQFP-G48 10−2