MAX9260 Maxim, MAX9260 Datasheet - Page 33

• Manufacturer Part Number: MAX9260
• Description: The MAX9259/MAX9260 chipset presents Maxim's gigabit multimedia serial link (GMSL) technology
• Manufacturer: Maxim

Table 7. MAX9260 Cable Equalizer Boost
Levels
Table 8. MAX9259 Serial Output Spread
Table 9. MAX9259 Spread-Spectrum Rate Limitations
BOOST SETTING
24-BIT MODE PCLKIN
(0x05 D[3:0])
33.3 to < 66.7
FREQUENCY
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
< 33.3
(MHz)
66.7+
Gigabit Multimedia Serial Link with Spread
Spectrum and Full-Duplex Control Channel
000
001
010
011
100
101
110
111
SS
______________________________________________________________________________________
TYPICAL BOOST GAIN (dB)
32-BIT MODE PCLKIN
Power-up default
Power-up default
No spread spectrum. Power-up default when SSEN = low.
Q0.5% spread spectrum. Power-up default when SSEN = high.
Q1.5% spread spectrum
Q2% spread spectrum
No spread spectrum
Q1% spread spectrum
Q3% spread spectrum
Q4% spread spectrum
(EQS = high)
(EQS = low)
FREQUENCY
20 to < 50
10.7
11.7
(MHz)
2.1
2.8
3.4
4.2
5.2
6.2
8.2
9.4
13
< 25
50+
7
SERIAL LINK BIT RATE
To reduce the EMI generated by the transitions on the
serial link and parallel outputs, both the MAX9259 and
MAX9260 support spread spectrum. Turning on spread
spectrum on the MAX9260 spreads the parallel video
outputs. Turning on spread spectrum on the MAX9259
spreads the serial link, along with the MAX9260 parallel
outputs. Do not enable spread spectrum for both the
MAX9259 and MAX9260. The six selectable spread-
spectrum rates at the MAX9259 serial output are Q0.5%,
Q1%, Q1.5%, Q2%, Q3%, and Q4% (Table 8). Some
spread-spectrum rates can only be used at lower PCLK_
frequencies (Table 9). There is no PCLK_ frequency limit
for the 0.5% spread rate. The two selectable spread-
spectrum rates at the MAX9260 parallel outputs are Q2%
and Q4% (Table 10).
Set the MAX9259 SSEN input high to select 0.5% spread
at power-up and SSEN input low to select no spread at
power-up. Set the MAX9260 SSEN input high to select
2% spread at power-up and SSEN input low to select no
spread at power-up. The state of SSEN is latched upon
power-up or when resuming from power-down mode.
Whenever the MAX9259 spread spectrum is turned on
1000 to < 2000
(Mbps)
< 1000
2000+
SPREAD (%)
AVAILABLE SPREAD RATES
1.5%, 1.0%, 0.5%
All rates available
Spread Spectrum
0.5%
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