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參數(shù)資料
| 型號： | MAX9259GCB/V+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 28/51頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC SERIALIZER GMSL 64TQFP |
| 標準包裝： | 750 |
| 系列： | * |
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Gigabit Multimedia Serial Link with Spread
Spectrum and Full-Duplex Control Channel
MAX9259/MAX9260
34 _____________________________________________________________________________________
or off, the serial link automatically restarts and remains
unavailable while the MAX9260 relocks to the serial data.
Turning on spread spectrum on either the MAX9259 or
MAX9260 side does not affect the audio data stream.
Changes in the MAX9259 spread settings only affect
MCLK output if it is derived from PCLK_ (MCLKSRC = 0).
Both devices include a sawtooth divider to control the
spread-modulation rate. Autodetection or manual pro-
gramming of the PCLK_ operation range guarantees a
spread-spectrum modulation frequency within 20kHz to
40kHz. Additionally, manual configuration of the saw-
tooth divider (SDIV, 0x03 D[5:0]) allows the user to set a
specific modulation frequency for a specific PCLK_ rate.
Always keep the modulation frequency between 20kHz
to 40kHz to ensure proper operation.
Manual Programming of the Spread-
Spectrum Divider
The modulation rates for the MAX9259 or the MAX9260
relate to the PCLK_ frequency as follows:
(
) PCLK_
M
f
1 DRS
MOD SDIV
= +
×
where:
fM = Modulation frequency
DRS = DRS pin input value (0 or 1)
fPCLK_ = Parallel clock frequency (12.5MHz to 104MHz)
MOD = Modulation coefficient given in Table 11 for the
MAX9259 and Table 12 for the MAX9260
SDIV = 6-bit (MAX9259) or 5-bit (MAX9260) SDIV setting,
manually programmed by the FC
Table 10. MAX9260 Parallel Output Spread
Table 11. MAX9259 Modulation Coefficients and Maximum SDIV Settings
Table 12. MAX9260 Modulation Coefficients and Maximum SDIV Settings
SS
SPREAD (%)
00
No spread spectrum. Power-up default when SSEN = low.
01
Q
2% spread spectrum. Power-up default when SSEN = high.
10
No spread spectrum
11
Q
4% spread spectrum
BIT-WIDTH MODE
SPREAD-SPECTRUM
SETTING (%)
MODULATION
COEFFICIENT (decimal)
SDIV UPPER LIMIT (deci-
mal)
32-Bit
1
104
40
0.5
104
63
3
152
27
1.5
152
54
4
204
15
2
204
30
24-Bit
1
80
52
0.5
80
63
3
112
37
1.5
112
63
4
152
21
2
152
42
SPREAD-SPECTRUM SETTING (%)
MODULATION COEFFICIENT (deci-
mal)
SDIV UPPER LIMIT (decimal)
4
208
15
2
208
30
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相關(guān)代理商/技術(shù)參數(shù) |
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