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參數(shù)資料
| 型號(hào)： | MAX9257GCM+ |
| 廠商： | Maxim Integrated Products |
| 文件頁(yè)數(shù)： | 18/52頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC SER/DESER PROG 48-LQFP |
| 其它有關(guān)文件： | Automotive Product Guide |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 250 |
| 功能： | 串行器/解串器 |
| 數(shù)據(jù)速率： | 840Mbps |
| 輸入類型： | 串行 |
| 輸出類型： | LVDS |
| 輸入數(shù)： | 16 |
| 輸出數(shù)： | 1 |
| 電源電壓： | 3 V ~ 3.6 V |
| 工作溫度： | -40°C ~ 105°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 48-LQFP |
| 供應(yīng)商設(shè)備封裝： | 48-LQFP（7x7） |
| 包裝： | 管件 |
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tracks and passes the spread to the data and clock out-
puts. The PRATE range of 00 and 01 (5MHz ≤ PCLK ≤
20MHz) supports all the spread options. The PRATE
range of 10 and 11 (20MHz ≤ PCLK ≤ 70MHz) requires
that the spread be 2% or less.
Pixel Clock Jitter Filter
The MAX9257 has a PLL to filter high-frequency pixel
clock jitter on PCLK_IN. The FPLL can be bypassed by
writing 1 to REG4[2]. The FPLL improves the
MAX9258’s data recovery by filtering out the high-fre-
quency components from the pixel clock that the
MAX9258 cannot track. The 3dB bandwidth of the FPLL
is 100kHz (typ).
LVDS Output Preemphasis (SDO±)
The MAX9257 features programmable preemphasis
where extra current is added when the LVDS outputs
transition on the serial link. Preemphasis provides addi-
tional current to the normal drive current. For example,
20% preemphasis provides 20% greater current than
the normal drive current. Current is boosted only on the
transitions and returns to the normal drive current after
switching. Select the preemphasis level to optimize the
eye diagram. Preemphasis boosts the high-frequency
content of the LVDS outputs to enable driving greater
cable lengths. The amount of preemphasis is pro-
grammed in REG12[7:5] (Table 21).
VSYNC, HSYNC, and Pixel Clock Polarity
PCLK: The MAX9257 is programmable to latch data on
either rising or falling edge of PCLK. The polarity of
PCLKOUT at the MAX9258 can be independent of the
MAX9257 PCLK active edge. The polarity of PCLK can
be programmed using REG4[5] of the MAX9257 and
the MAX9258.
VSYNC: The MAX9257 and the MAX9258 enter control
channel on the falling edge of VSYNC. The default reg-
ister settings are VSYNC active falling edge for both the
MAX9257 and the MAX9258. If the VSYNC active edge
is programmed for rising edge at the MAX9257, the
MAX9258 VSYNC active edge must also be pro-
grammed for rising edge to reproduce VSYNC rising
edge at the MAX9258 output. However, matching the
polarity of the VSYNC active edge between the
MAX9257 and the MAX9258 is not a requirement for
proper operation.
HSYNC: HSYNC active-edge polarity is programmable
for the MAX9258.
General Purpose I/Os (GPIOs)
The MAX9257 has up to 10 GPIOs available. GPIO8
and GPIO9 are always available while GPIO[0:7] are
available depending on the parallel-word width (Table
22). If GPIOs are not available, the corresponding GPIO
bits are not used.
MAX9257/MAX9258
______________________________________________________________________________________
25
Fully Programmable Serializer/Deserializer
with UART/I2C Control Channel
FREQUENCY
TIME
fSPREAD (MAX)
fPCLK_IN
fSPREAD (MIN)
1/fSSM
Figure 21. Simplified Modulation Profile for the MAX9257/MAX9258
PRATE (REG1[7:6])
SPREAD (%)
00
Off
01
±2
10
Off
11
±4
Table 17. MAX9258 Spread
PRATE
(REG1[7:6])
MODULATION RATE
fSSM RANGE (kHz)
00
PCLK/312
16 to 32
01
PCLK/520
19.2 to 38.5
10
PCLK/1040
19.2 to 38.5
11
PCLK/1248
32 to 56
Table 18. MAX9258 Modulation Rate
REG1[7:5]
SPREAD (%)
000
Off
001
±1.5
010
±1.75
011
±2
100
Off
101
±3
110
±3.5
111
±4
Table 19. MAX9257 LVDS Output Spread
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX9257GCM/V+ | 功能描述:串行器/解串器 - Serdes Prog Serializer / Deserializer RoHS:否 制造商:Texas Instruments 類型:Deserializer 數(shù)據(jù)速率:1.485 Gbit/s 輸入類型:ECL/LVDS 輸出類型:LVCMOS 輸入端數(shù)量:1 輸出端數(shù)量:20 工作電源電壓:2.375 V to 2.625 V 工作溫度范圍:0 C to + 70 C 封裝 / 箱體:TQFP-64 |
| MAX9257GCM/V+T | 功能描述:串行器/解串器 - Serdes Prog Serializer / Deserializer RoHS:否 制造商:Texas Instruments 類型:Deserializer 數(shù)據(jù)速率:1.485 Gbit/s 輸入類型:ECL/LVDS 輸出類型:LVCMOS 輸入端數(shù)量:1 輸出端數(shù)量:20 工作電源電壓:2.375 V to 2.625 V 工作溫度范圍:0 C to + 70 C 封裝 / 箱體:TQFP-64 |
| MAX9257GCM+ | 功能描述:串行器/解串器 - Serdes Prog Serializer / Deserializer RoHS:否 制造商:Texas Instruments 類型:Deserializer 數(shù)據(jù)速率:1.485 Gbit/s 輸入類型:ECL/LVDS 輸出類型:LVCMOS 輸入端數(shù)量:1 輸出端數(shù)量:20 工作電源電壓:2.375 V to 2.625 V 工作溫度范圍:0 C to + 70 C 封裝 / 箱體:TQFP-64 |
| MAX9257GCM+T | 功能描述:串行器/解串器 - Serdes Prog Serializer / Deserializer RoHS:否 制造商:Texas Instruments 類型:Deserializer 數(shù)據(jù)速率:1.485 Gbit/s 輸入類型:ECL/LVDS 輸出類型:LVCMOS 輸入端數(shù)量:1 輸出端數(shù)量:20 工作電源電壓:2.375 V to 2.625 V 工作溫度范圍:0 C to + 70 C 封裝 / 箱體:TQFP-64 |
| MAX9257GTL/V+ | 功能描述:串行器/解串器 - Serdes Prog Serializer / Deserializer RoHS:否 制造商:Texas Instruments 類型:Deserializer 數(shù)據(jù)速率:1.485 Gbit/s 輸入類型:ECL/LVDS 輸出類型:LVCMOS 輸入端數(shù)量:1 輸出端數(shù)量:20 工作電源電壓:2.375 V to 2.625 V 工作溫度范圍:0 C to + 70 C 封裝 / 箱體:TQFP-64 |
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