MAX3816ACUE+T Maxim Integrated Products, MAX3816ACUE+T Datasheet - Page 8

• Manufacturer Part Number: MAX3816ACUE+T
• Description: IC I2C 2WIRE EXTENDER 16-TSSOP
• Manufacturer: Maxim Integrated Products
• Type: DDC (Digital Down Converter) Extenderr

Specifications of MAX3816ACUE+T

• Applications: HD Displays, DVI/HDMI
• Mounting Type: Surface Mount
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

I
HDMI, and VGA Interfaces
Locally, connect a 47kΩ pullup resistor from CLOCK_C
and DATA_C to V
pullup resistor resides at the opposite end of each
channel.
The display drivers (Figure 11) are typical open-drain
pulldown devices capable of discharging up to 400pF
of capacitive load within the I
Figure 1a. Clock State Machine Diagram
8
2
_______________________________________________________________________________________
C 2-Wire Extender for DDC in DVI,
NOTES:
1) STATE CHANGE CONDITIONS ARE IN ITALICS. TRANSITION ACTIONS ARE UNDERLINED.
2) THE DATA CHANNEL STATE MACHINE IS IDENTICAL AND SYMMETRIC, EXCEPT THAT HOLDOFF TIME IS 2.0μs INSTEAD OF 2.5μs.
3) DEPENDENT ON MODE PIN 16: MODE = LOW FOR SERIAL OPERATION (DRIVERS HOLD); MODE = HIGH FOR PARALLEL OPERATION (DRIVERS OFF).
CLOCK_C “OR” CLOCK_D < 75%
CLOCK_C “AND” CLOCK_D > 85%
ALSO, IN ADDITION TO THE 85% CONDITION TO EXIT STATE 6, DATA HAS AN ADDITIONAL EXIT: DATA_C “OR” DATA_D < 60%.
HOLDOFF TIMER ≥ 2.5 s
HOLDOFF TIMER = 1.75 s μ
HOLDOFF TIMER = START
CC
“AND”
RAMP
. This assumes that a 1.65kΩ
UP
μ
2
DRIVERS OFF
DRIVERS OFF
DRIVERS ON
SENSE OFF
SENSE OFF
SENSE ON
C fall-time limits.
STATE
HIGH
1
6
5
Display Drivers
Locally, connect a 2.2kΩ pullup resistor from CLOCK_D
and DATA_D to V
resistor to V
The MAX3816A’s level-sensing circuitry monitors the
incoming data for state transitions. When the CLOCK or
DATA signal is high and drops below V
troller ramps the outputs low. When the DATA and
CLOCK are low and both rise above V
enced to GND_REF on the source side or V
display side, the output drives the level high.
DD
DRIVERS ON
SENSE OFF
SENSE OFF
SENSE ON
(NOTE 3)
(NOTE 3)
STATE
for V
LOW
2
3
4
DD
HOLDOFF TIMER = START
HOLDOFF TIMER = 1.75 s μ
HOLDOFF TIMER = 2.5 s μ
CLOCK_D > 17.5% AND CLOCK_C > 12.5%
DD
for V
= 5V.
DOWN
RAMP
DD
= 3.3V, or a 3.3kΩ pullup
TRIGIH
Level Sense
TRIGIL
SS
, the con-
, refer-
on the