DS90UH927Q-Q1 Datasheet, PDF (10/68 Pages) Texas Instruments – 5-MHz to 85-MHz 24-Bit Color FPD-Link III Serializer with HDCP

DS90UH927Q-Q1
SNLS433C – NOVEMBER 2012 – REVISED JANUARY 2015
www.ti.com
6.7 DC and AC Serial Control Bus Characteristics
Over 3.3-V supply and temperature ranges unless otherwise specified.^(1)(2)(3)
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNIT
V_IH
Input High Level
V_IL
Input Low Level Voltage
V_HY
Input Hysteresis
V_OL
I_in
C_in
Input Capacitance
SDA and SCL
SDA and SCL
SDA or SCL, IOL = 1.25 mA
SDA or SCL, Vin = V_DDIO or GND
SDA or SCL
0.7*
V_DDIO
GND
0
-10
V_DD33 V
0.3*
V_DD33
V
>50
mV
0.36 V
+10 µA
<5
pF
(1) The Electrical Characteristics tables list ensured specifications under the listed Recommended Operating Conditions except as
otherwise modified or specified by the Electrical Characteristics conditions and/or notes. Typical specifications are estimations only and
are not ensured.
(2) Typical values represent most likely parametric norms at V_DD33 = 3.3V, V_DDIO = 1.8V or 3.3V, T_A = 25°C, and at the Recommended
Operating Conditions at the time of product characterization and are not ensured.
(3) Current into device pins is defined as positive. Current out of a device pin is defined as negative. Voltages are referenced to ground
except V_OD and ΔV_OD, which are differential voltages. Supply noise testing was done with minimum capacitors on the PCB. A sinusoidal
signal is AC coupled to the supply pins with amplitude = 100 mVp-p measured at the device V_DD33 and V_DDIO pins. Bit error rate testing
of input to the serializer and output of the deserializer with 10 meter cable shows no error when the noise frequency is less than 50
MHz.
6.8 Recommended Timing Requirements for the Serial Control Bus
Over 3.3-V supply and temperature ranges unless otherwise specified.^(1)(2)(3)
f_SCL
t_LOW
t_HIGH
t_HD;STA
t_SU:STA
t_HD;DAT
t_SU;DAT
t_SU;STO
t_BUF
SCL Clock Frequency
Standard Mode
Fast Mode
SCL Low Period
Standard Mode
Fast Mode
SCL High Period
Standard Mode
Fast Mode
Hold time for a start or a
repeated start condition, see
Figure 9
Standard Mode
Fast Mode
Set Up time for a start or a
repeated start condition, see
Figure 9
Standard Mode
Fast Mode
Data Hold Time, see Figure 9
Standard Mode
Fast Mode
Standard Mode
Data Set Up Time, see Figure 9
Fast Mode
Set Up Time for STOP
Condition, see Figure 9
Standard Mode
Fast Mode
Bus Free Time
Between STOP and START,
see Figure 9
Standard Mode
Fast Mode
MIN NOM MAX UNIT
0
100 kHz
0
400 kHz
4.7
µs
1.3
µs
4.0
µs
0.6
µs
4.0
µs
0.6
µs
4.7
µs
0.6
µs
0
3.45 µs
0
0.9 µs
250
ns
100
ns
4.0
µs
0.6
µs
4.7
µs
1.3
µs
(1) The Electrical Characteristics tables list ensured specifications under the listed Recommended Operating Conditions except as
otherwise modified or specified by the Electrical Characteristics conditions and/or notes. Typical specifications are estimations only and
are not ensured.
(2) Typical values represent most likely parametric norms at V_DD33 = 3.3V, V_DDIO = 1.8V or 3.3V, T_A = 25°C, and at the Recommended
Operating Conditions at the time of product characterization and are not ensured.
(3) Current into device pins is defined as positive. Current out of a device pin is defined as negative. Voltages are referenced to ground
except V_OD and ΔV_OD, which are differential voltages. Supply noise testing was done with minimum capacitors on the PCB. A sinusoidal
signal is AC coupled to the supply pins with amplitude = 100 mVp-p measured at the device V_DD33 and V_DDIO pins. Bit error rate testing
of input to the serializer and output of the deserializer with 10 meter cable shows no error when the noise frequency is less than 50
MHz.
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