LMH0318_15 Datasheet, PDF (11/57 Pages) Texas Instruments – LMH0318 3 Gbps HD/SD SDI Reclocker with Integrated Cable Driver

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LMH0318
SNLS508 – SEPTEMBER 2015
7.6 Recommended SMBus Interface AC Timing Specifications^(1)(2)(3)
Over operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST
CONDITIONS
MIN
TYP
f_SMB
Bus operating frequency
t_BUF
Bus free time between stop and
start condition
10
100
1.3
Hold time after (repeated) start
t_HD:STA
condition
After this period, the first clock is
0.6
generated
t_SU:STA
Repeated start condition setup
time
MODE_SEL = 0
0.6
t_SU:STO
Stop condition setup time
0.6
t_HD:DAT
Data hold time
0
t_SU:DAT
Data setup time
100
t_LOW
Clock low period
1.3
t_HIGH
Clock high period
0.6
t_F
SDA fall time read operation
t_R
SDA rise time read operation
(1) SMBus operation is available 20ms after power up
(2) These specifications support SMBus 2.0 specifications
(3) These Parameters are not production tested
MAX
400
UNIT
kHz
μs
μs
μs
μs
ns
ns
μs
50
μs
300
ns
300
ns
7.7 Serial Parallel Interface (SPI) Bus Interface AC Timing Specifications^(1)(2)(3)
Over operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST
CONDITIONS
MIN
TYP
MAX
UNIT
f _SCK
T_SCK
t_PH
t_PL
t_SU
t_H
t_SSSu
t_SSH
t_SSOF
t_ODZ
t_OZD
SCK frequency
MODE_SEL = 1
SCK period
SCK pulse width high
SCK pulse width low
MOSI setup time
MOSI hold time
SS_N setup time
SS_N hold time
SS_N off time
MISO driven to TRI-STATE time
MISO TRI-STATE-to-Driven
time
10
50
0.40*T_SCK
0.40*T_SCK
4
4
14
18
4
1
20
10
20
MHz
ns
ns
ns
ns
ns
ns
ns
μs
ns
ns
t_OD
MISO output delay time
15
ns
(1) Typical values are parametric norms at VDD = 2.5 V, TA = 25ºC, and recommended operating conditions at the time of product
characterization. Typical values are not production tested.
(2) These specifications support SPI 1.0 specifications.
(3) These Parameters are not production tested
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