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參數(shù)資料
| 型號(hào)： | MAX9259GCB/V+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 27/51頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC SERIALIZER GMSL 64TQFP |
| 標(biāo)準(zhǔn)包裝： | 750 |
| 系列： | * |
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Gigabit Multimedia Serial Link with Spread
Spectrum and Full-Duplex Control Channel
MAX9259/MAX9260
______________________________________________________________________________________ 33
Spread Spectrum
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%,
Q
1%, 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
Table 7. MAX9260 Cable Equalizer Boost
Levels
Table 8. MAX9259 Serial Output Spread
Table 9. MAX9259 Spread-Spectrum Rate Limitations
BOOST SETTING
(0x05 D[3:0])
TYPICAL BOOST GAIN (dB)
0000
2.1
0001
2.8
0010
3.4
0011
4.2
0100
5.2
Power-up default
(EQS = high)
0101
6.2
0110
7
0111
8.2
1000
9.4
1001
10.7
Power-up default
(EQS = low)
1010
11.7
1011
13
SS
SPREAD (%)
000
No spread spectrum. Power-up default when SSEN = low.
001
Q
0.5% spread spectrum. Power-up default when SSEN = high.
010
Q
1.5% spread spectrum
011
Q
2% spread spectrum
100
No spread spectrum
101
Q
1% spread spectrum
110
Q
3% spread spectrum
111
Q
4% spread spectrum
24-BIT MODE PCLKIN
FREQUENCY
(MHz)
32-BIT MODE PCLKIN
FREQUENCY
(MHz)
SERIAL LINK BIT RATE
(Mbps)
AVAILABLE SPREAD RATES
< 33.3
< 25
< 1000
All rates available
33.3 to < 66.7
20 to < 50
1000 to < 2000
1.5%, 1.0%, 0.5%
66.7+
50+
2000+
0.5%
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