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DS90UB901Q_15 Datasheet, PDF (12/50 Pages) Texas Instruments – 10 - 43MHz 14 Bit Color FPD-Link III Serializer and Deserializer with Bidirectional Control Channel
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DS90UB901Q, DS90UB902Q
SNLS322E – JUNE 2010 – REVISED APRIL 2013
Bidirectional Control Bus AC Timing Specifications (SCL, SDA) - I2C Compliant
Over recommended supply and temperature ranges unless otherwise specified. See Figure 4.
Symbol
Parameter
RECOMMENDED INPUT TIMING REQUIREMENTS(1)
Conditions
Min
Typ
fSCL
SCL Clock Frequency
>0
tLOW
SCL Low Period
4.7
tHIGH
SCL High Period
4.0
tHD:STA
Hold time for a start or a repeated start
condition
4.0
tSU:STA
Set Up time for a start or a repeated
start condition
4.7
tHD:DAT Data Hold Time
fSCL = 100 kHz
0
tSU:DAT Data Set Up Time
250
tSU:STO Set Up Time for STOP Condition
4.0
tr
SCL & SDA Rise Time
tf
SCL & SDA Fall Time
Cb
Capacitive load for bus
SWITCHING CHARACTERISTICS(2)
Serializer MODE = 0 – R/W
Register 0x05 = 0x40'h
100
fSCL
SCL Clock Frequency
Deserializer MODE = 0 – READ
Register 0x06 b[6:4] = 0x00'h
100
tLOW
SCL Low Period
Serializer MODE = 0 – R/W
Register 0x05 = 0x40'h
4.7
Deserializer MODE = 0 – READ
Register 0x06 b[6:4] = 0x00'h
tHIGH
SCL High Period
Serializer MODE = 0 – R/W
Register 0x05 = 0x40'h
4.0
Deserializer MODE = 0 – READ
Register 0x06 b[6:4] = 0x00'h
tHD:STA
Hold time for a start or a repeated start Serializer MODE = 0
condition
Register 0x05 = 0x40'h
4.0
tSU:STA
Set Up time for a start or a repeated
start condition
Serializer MODE = 0
Register 0x05 = 0x40'h
4.7
tHD:DAT Data Hold Time
0
tSU:DAT Data Set Up Time
250
tSU:STO Set Up Time for STOP Condition
Serializer MODE = 0
4.0
tf
SCL & SDA Fall Time
tBUF
Bus free time between a stop and start Serializer MODE = 0
condition
4.7
Serializer MODE = 1
1
tTIMEOUT NACK Time out
Deserializer MODE = 1
Register 0x06 b[2:0]=111'b
25
(1) Recommended Input Timing Requirements are input specifications and not tested in production.
(2) Specification is by design.
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Max
Units
100
kHz
µs
µs
µs
µs
3.45
µs
ns
µs
1000
ns
300
ns
400
pF
kHz
µs
µs
µs
µs
3.45
µs
ns
µs
300
ns
µs
ms
12
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