48SWTQFN-EP datasheet(68/103 Pages) MAXIM

68 / 103 page

MAX9288/MAX9290

3.12Gbps GMSL Deserializers

for Coax or STP Input and MIPI CSI-2 Output

www.maximintegrated.com

Maxim Integrated │ 68

Coax Splitter Mode

In coax mode, OUT+ and OUT- of the serializer are active.

This enables the use as a 1:2 splitter (Figure 54). In coax

mode, connect OUT+ to IN+ of the deserializer. Connect

OUT- to IN- of the second deserializer. Control-channel

data is broadcast from the serializer to both deserializers

and their attached peripherals. Assign a unique address

to send control data to one deserializer. Leave all unused

IN_ pins unconnected, or connect them to ground through

50Ω and a capacitor for increased power-supply rejection.

If OUT- is not used, connect OUT- to AVDD through a 50Ω

resistor (Figure 55). When there are µCs at the serializer,

and at each deserializer, only one µC can communicate

at a time. Disable forward and reverse channel links

according to the communicating deserializer connection

to prevent contention in I2C-to-I2C mode. Use ENREVP

or ENREVN register bits to disable/enable the control

channel link. In UART mode, the serializer provides

arbitration of the control-channel link.

Figure 54. 2:1 Coax Splitter Connection Diagram

Figure 55. Coax Connection Diagram

OUT+

OUT-

OPTIONAL

COMPONENTS

FOR INCREASED

POWER-SUPPLY

REJECTION

IN+

IN-

IN+

IN-

MAX9288

MAX9290

MAX9288

MAX9290

GMSL

SERIALIZER

OUT+

OUT-

IN+

OPTIONAL COMPONENTS FOR

INCREASED POWER-SUPPLY

REJECTION

IN-

AVDD

50Ω

MAX9288

MAX9290

GMSL

SERIALIZER

48SWTQFN-EP Datasheet(PDF) 68 Page - Maxim Integrated Products

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