C control channel – Rainbow Electronics MAX9258 User Manual
Page 41

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)