Datasheet

MAX3845
DVI/HDMI 2:4 TMDS Fanout Switch and
Cable Driver
_______________________________________________________________________________________ 9
OUTPUT MACRO 1
OUT1_[A-D]
HOTPLUG1
PREEMPH1
IN_SEL1
DVI OR
HDMI
CONNECTOR
PE
OUTPUT MACRO 2
OUT2_[A-D]
HOTPLUG2
PREEMPH2
IN_SEL2
DVI OR
HDMI
CONNECTOR
PE
OUTPUT MACRO 3
OUT3_[A-D]
HOTPLUG3
PREEMPH3
IN_SEL3
DVI OR
HDMI
CONNECTOR
PE
OUTPUT MACRO 4
OUT4_[A-D]
HOTPLUG4
PREEMPH4
IN_SEL4
DVI OR
HDMI
CONNECTOR
PE
OUT_LEVEL
EQEQ LA
LOS 1
-
>MUTE
PD INPUT MACRO 1
IN1_[A-D]
CLKLOS
PWRDWN_1
LOSMUTE_EN
EXAMPLE:
MAX3815
EQEQ LA
LOS 2
-
>MUTE
PD INPUT MACRO 2
IN2_[A-D]
CLKLOS
PWRDWN_2
TEMP (DIE TEMP SENSE)
EXAMPLE:
MAX3815
2:4 DVI FANOUT
SWITCH AND CABLE DRIVER
ANALOG TEMP
SENSE
POWER-DOWN LOGIC FOR EACH OF 4 OUTPUT MACROS
PWRDWN_ [OUTPUT MACRO x], WHERE x = 1, 2, 3, OR 4, IF:
[PWRDWN_1 = LOW] OR [LOS 1 = HIGH]
AND
[IN_SELx = HIGH]
OR
[PWRDWN_2 = HIGH] OR [LOS 2 = HIGH]
AND
[IN_SELx = LOW]
OR
[IN_SELx = OPEN]
[HOTPLUGx = LOW OR OPEN]
ON-CHIP SIGNAL:
POWER-DOWN
OUTPUT MACRO x
HIGH
LOW
OPEN
DECODER
IN_SELx
R 2 x R
Figure 1. Functional Diagram