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C control channel – Rainbow Electronics MAX9258 User Manual

Page 22

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MAX9257/MAX9258

Tables 1 and 2 show the default power-up values for
the MAX9257/MAX9258 registers. Tables 3 and 4 show
the input and output supply references.

Parallel-Word Width

The parallel-word width is made up of the video data
bits, HYSNC, and VSYNC. The video data bits are pro-
grammable from 8 to 16 depending on the pixel clock,
serial-data rate, and parity. Table 16 shows the parallel-
word width.

Serial-Word Length

The serial-word length is made up of the parallel-word
width, encoding bits, and parity bits. Tables 5–9 show
the serial video format and serial-word lengths without
parity. Tables 10–13 show with parity bits included.

LVDS Serial Data

Serial LVDS data is transmitted least significant bit (LSB)
to most significant bit (MSB) as shown in Tables 5
through 13. The ECU at startup can program the parallel

word width, serial frequency range, parity, spread-spec-
trum, and pixel clock frequency range

(

see the

MAX9257

Register Table

and the

MAX9258 Register Table)

.

22

______________________________________________________________________________________

Fully Programmable Serializer/Deserializer
with UART/I

2

C Control Channel

REGISTER NAME

REGISTER

ADDRESS (hex)

POWER-UP VALUE

(hex)

POWER-UP DEFAULT SETTINGS

REG8

0x08

0x10

PATHRLO = 0001 0000
parity threshold = 16

REG9

0x09

0x00

PATHRHI = 0000 0000,
parity threshold = 16

REG10

0x0A

0x00

Parity errors video (8 LSBs) = read only

REG11

0x0B

0x00

Parity errors video (8 MSBs) = read only

REG12

0x0C

0x00

PRBS bit errors = read only

REG13

0x0D

0x00

Reserved = 000
Parity error, communication with MAX9258 = read only
Frame error, communication with MAX9258 = read only
Parity error, communication with MAX9257 = read only
Frame error, communication with MAX9257 = read only
I

2

C error, communication with peripheral = read only

Table 2. MAX9258 Power-Up Default Register Map (continued)

INPUTS/OUTPUTS

SUPPLY

PCLK_IN, HSYNC_IN, VSYNC_IN,
DIN[0:7], DIN[8:15]/GPIO[0:7],
GPIO8, GPIO9

V

CCIO

SDO+, SDO-

V

CCLVDS

SCL/TX, SDA/RX, REM

V

CC

Table 3. MAX9257 I/O Supply

INPUTS/OUTPUTS

SUPPLY

All inputs and outputs

V

CCOUT

SDI+, SDI-

V

CCLVDS

Table 4. MAX9258 I/O Supply