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TAS3103 Datasheet(PDF) 123 Page - Texas Instruments |
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TAS3103 Datasheet(HTML) 123 Page - Texas Instruments |
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123 / 146 page  4−7 4.4.5 I2C Slave Mode Interface Signals Over Recommended Operating Conditions (unless otherwise noted) PARAMETER TEST STANDARD MODE FAST MODE UNITS PARAMETER TEST CONDITIONS MIN TYP MAX MIN TYP MAX UNITS fSCL Frequency, SCL 0 100 0 400 kHz tW(H) Minimum pulse duration, SCL high See Note 15 0.43 0.12 µs tW(L) Minimum pulse duration, SCL low See Note 15 1.3 0.9 µs tr Rise time, SDAOutput CL = 330 pF 48.3 48.3 ns tf Fall time, SDAOutput CL = 330 pF 35.9 35.9 ns tsu1 Setup time, SDAInput to SCL See Note 15 0 0 ns th1 Hold SCL to SDAInput See Note 15 0 0 ns th1 Hold time SCL to SDAOutput See Note 16 Toversamp 2Toversamp Toversamp 2Toversamp µs tbuf Minimum bus free time between STOP and START condition See Note 15 0.82 0.38 µs tsu2 Minimum setup time, SCL to START condition See Note 15 0.7 0.4 µs th2 Minimum hold time, START condition to SCL See Note 15 1.5 0.05 µs tsu3 Minimum setup time, SCL to STOP condition See Note 15 0.9 0.4 µs NOTES: 15. The maximum and/or minimum values for the TAS3103 I2C port parameters meets those characteristics of the SDA and SCL bus lines listed below, as specified in the I2C bus devices bus specification. 16. Toversamp is the period of the oversample clock provided to the I2C master salve controller. This clock is dependent on the microprocessor clock setting and the value set for the variable N in subaddress 0xFB. See Figure 2−14. SPECIFIED I2C BUS CHARACTERISTICS PARAMETER STANDARD MODE FAST MODE Pulse duration high, tw(H) 4 µs MIN 0.6 µs MIN SCL Pulse duration low, tw(L) 4.7 µs MIN 1.3 µs MIN SCL Frequency fSCL 100 kHz 400 kHz SDAInput Setup time tsu1, SDAInput to SCL 250 ns MIN 100 ns MIN SDAInput Hold Time th1, SCL to SDAInput 0 ns MIN 0 ns MIN Bus free time between STOP and START condition tbuf 4.7 µs MIN 1.3 µs MIN START/STOP conditions Setup time tsu2, SCL to START condition 4.7 µs MIN 0.6 µs MIN START/STOP conditions Hold time th2, START condition to SCL 4 µs MIN 0.6 µs MIN Setup time tsu3, SCL to STOP condition 4 µs MIN 0.6 µs MIN |
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