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C control channel – Rainbow Electronics MAX9258 User Manual

Page 44

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MAX9257/MAX9258

44

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Fully Programmable Serializer/Deserializer
with UART/I

2

C Control Channel

ADDRESS

BITS

DEFAULT

NAME

DESCRIPTION

7:6

10

PRATE

Pixel clock frequency range
00 = 5MHz to 10MHz
01 = 10MHz to 20MHz
10 = 20MHz to 40MHz (default)
11 = 40MHz to 70MHz

5:4

11

SRATE

Serial-data rate range
00 = 60Mbps to 100Mbps
01 = 100Mbps to 200Mbps
10 = 200Mbps to 400Mbps
11 = 400Mbps to 840Mbps (default)

3

0

PAREN

Parity enable

0 = disabled (default), 1 = enabled

0

2:0

101

PWIDTH

Parallel data width
(includes HSYNC and VSYNC, excludes encoding and parity bits)
000 = 10

100 = 18

001 = 12

101 = 18 (default)

010 = 14

110 = 18

011 = 16

111 = 18

7:6

00

SPREAD

Spread-spectrum setting
00 = Off (default)

10 = Off

01 = 2%

11 = 4%

5

0

AER

Autoerror reset
1 = Reset error count when control channel ends.
0 = Reset upon reading error registers 10, 11, 13 (default)

1

4:0

00000

Reserved (set to 000000)

Control channel start timeout: (STO) times out if ECU does not start using control channel within this amount of time
after control channel session is enabled.

7:4

1010

STODIV

Control channel start 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

2

3:0

0000

STOCNT

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

MAX9258 Register Table