48SWTQFN-EP datasheet(70/103 Pages) MAXIM

70 / 103 page

MAX9288/MAX9290

3.12Gbps GMSL Deserializers

for Coax or STP Input and MIPI CSI-2 Output

www.maximintegrated.com

Maxim Integrated │ 70

LUT Bit Width

In 32-bit and high-bandwidth modes, 24 bits are

available for color data (8 bits per color) and each LUT is

used for 8-bit to 8-bit color translation. In 24-bit mode, the

deserializer can receive only up to 18-bit color (6 bits per

color). The LUT tables can translate from 6-bit to 6-bit,

using the first 64 locations (0x00 to 0x3F). Program the

MSB 2 bits of each LUT value to 00. Alternatively, pro-

gram full 8-bit values to each LUT for 6-bit to 8-bit color

translation.

Recommended LUT Program Procedure

1) Write LUTPROG = 1 to register 0x7C. Keep

BLULUTEN = 0, GRNLUTEN = 0, REDLUTEN = 0

(write 0x08 to register 0x7C).

2) Write contents of red LUT with a single write packet.

For 24-bit RGB, use 0x7D as register address and

0x00 as number of bytes (UART only) and write 256

bytes. For 18-bit RGB, use 0x7D as register address

and 0x40 as number of bytes (UART only) and write 64

bytes. (Optional: Multiple write packets can be used if

LUTADDR is set before each LUT write packet.)

3) Read contents of red LUT and verify that they are

correct. Use the same register address and number

of bytes used in the previous step.

4) Repeat steps 2 and 3 for the green LUT, using 0x7E

as the register address.

5) Repeat steps 2 and 3 for the blue LUT, using 0x7F as

the register address.

6a) To finish the program and verify routine, without

enabling the LUT color translation, write LUTPROG =

0 (write 0x00 to register 0x7C).

6b) To finish the program and verify routine, and start LUT

color translation, write LUTPROG = 0, BLULUTEN =

1, GRNLUTEN = 1, REDLUTEN = 1 (write 0x07 to

Figure 56. LUT Dataflow

ADDR

24-BIT MODE

32-BIT OR HIGH-

BANDWIDTH MODE

RED LUT

DATA

MSB

LSB

MSB

LSB

DOUT3

DOUT9 DOUT8 DOUT7 DOUT6

DOUT2 DOUT1 DOUT0

DOUT4

DOUT5

ADDR

GREEN LUT

DATA

MSB

LSB

MSB

LSB

ADDR

BLUE LUT

DATA

MSB

LSB

MSB

LSB

REDLUTEN

GRNLUTEN

BLULUTEN

DOUT

OUTPUT

SIGNAL

24-BIT MODE

32-BIT OR HIGH-

BANDWIDTH MODE

24-BIT MODE

32-BIT OR HIGH-

BANDWIDTH MODE

48SWTQFN-EP Datasheet(PDF) 70 Page - Maxim Integrated Products

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