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C control channel – Rainbow Electronics MAX9258 User Manual

Page 41

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MAX9257/MAX9258

______________________________________________________________________________________

41

Fully Programmable Serializer/Deserializer

with UART/I

2

C Control Channel

ADDRESS

BITS

DEFAULT

NAME

DESCRIPTION

Control channel end timeout: (ETO) times out if ECU does not use control channel for this amount of time after it has
already used at least once.

7:4

1010

ETODIV

Control channel end timeout divider
Pixel clock is first divided by:
0000 = 16

1000 = 256

0001 = 16

1001 = 512

0010 = 16

1010 = 1024 (default)

0011 = 16

1011 = 2048

0100 = 16

1100 = 4096

0101 = 32

1101 = 8192

0110 = 64

1110 = 16,384

0111 = 128

1111 = 32,768

3

3:0

0000

ETOCNT

Control channel end timeout counter
Divided pixel clock is used to count up to (ETOCNT + 1)

7

0

VEDGE

VSYNC active edge at camera interface
0 = falling (default), 1 = rising

6

0

Reserved (set to 0)

5

1

CKEDGE

PCLK active edge at camera interface
0 = falling, 1 = rising (default)

4

0

PD

Power mode
0 = power-up, 1 = power-down
(when REM = 1 default is 1)

3

1

SEREN

Serialization enable
0 = disabled, 1 = enabled
(when REM = 1 default is 0)

2

0

BYPFPLL

Bypass filter PLL
0 = active (default), 1 = bypass

1

0

Reserved (set to 0)

4

0

0

PRBSEN

PRBS test enable
0 = disabled (default), 1 = enabled

7:1

1111101

DEVICEID

7-bit address of MAX9257

5

0

0

Reserved (set to 0)

7:1

1111111

EF

End frame to close control channel

6

0

1

Reserved (set to 1)

7:1

1111100

DESID

7-bit address ID of MAX9258

7

0

0

Reserved (set to 0)

MAX9257 Register Table (continued)