參數資料
型號： MAX9272GTM/V+
廠商： Maxim Integrated Products
文件頁數： 32/47頁
文件大?。?/td> 0K
描述： IC DSERIALIZER 28BIT GMSL 48TQFN
標準包裝： 43
系列： *
MAX9272
28-Bit GMSL Deserializer for Coax or STP Cable
38
Maxim Integrated
Local Control-Channel Enable (LCCEN)
The deserializer provides inputs for limited configura-
tion of the device when a FC is not connected. Connect
LCCEN = low upon power-up to disable the local control
channel and enable the double-function configuration
inputs (Table 13). All input configuration states are
latched at power-up.
Internal Input Pulldowns
The control and configuration inputs, except three-level
inputs, include a pulldown resistor to GND. External pull-
down resistors are not needed.
Choosing I2C/UART Pullup Resistors
The I2C and UART open-drain lines require a pullup
resistor to provide a logic-high level. There are tradeoffs
between power dissipation and speed, and a compromise
may be required when choosing pullup resistor values.
Every device connected to the bus introduces some
capacitance even when the device is not in operation. I2C
specifies 300ns rise times (30% to 70%) for fast mode,
which is defined for data rates up to 400kbps (see the I2C
specifications in the AC Electrical Characteristics table
for details). To meet the fast-mode rise-time requirement,
choose the pullup resistors so that rise time tR = 0.85 x
RPULLUP x CBUS < 300ns. The waveforms are not recog-
nized if the transition time becomes too slow. The deserial-
izer supports I2C/UART rates up to 1Mbps (UART-to-I2C
mode) and 400kbps (I2C-to-I2C mode).
AC-Coupling
AC-coupling isolates the receiver from DC voltages up to
the voltage rating of the capacitor. Capacitors at the seri-
alizer output and at the deserializer input are needed for
proper link operation and to provide protection if either
end of the cable is shorted to a battery. AC-coupling
blocks low-frequency ground shifts and low-frequency
common-mode noise.
Selection of AC-Coupling Capacitors
Voltage droop and the digital sum variation (DSV) of trans-
mitted symbols cause signal transitions to start from dif-
ferent voltage levels. Because the transition time is fixed,
starting the signal transition from different voltage levels
causes timing jitter. The time constant for an AC-coupled
link needs to be chosen to reduce droop and jitter to an
acceptable level. The RC network for an AC-coupled link
consists of the CML/coax receiver termination resistor
Table 12. Staggered Output Delay
Table 13. Double-Function Configuration
OUTPUT
OUTPUT DELAY RELATIVE TO DOUT0 (ns)
DISSTAG = 0
DISSTAG = 1
DOUT0–DOUT5, DOUT21, DOUT22
0
DOUT6–DOUT10, DOUT23, DOUT24
0.5
0
DOUT11–DOUT15, DOUT25, DOUT26
1
0
DOUT16–DOUT20, DOUT27, DOUT28
1.5
0
PCLKOUT
0.75
0
LCCEN
GPIO0/DBL
FUNCTION
GPIO1/BWS
FUNCTION
MS/HVEN FUNCTION
RX/SDA/EDC
FUNCTION
TX/SCL/ES
FUNCTION
High
Functions as GPIO
MS input
(low = base mode,
high = bypass mode)
UART/I2C input/
output
UART/I2C input/
output
Low
DBL input
(low = single input,
high = double input)
BWS input
(low = 24-bit mode,
high = 32-bit mode)
HVEN input
(low = HS/VS
encoding disabled,
high = HS/VS
encoding enabled)
EDC input
(low = error
detection/correction
disabled,
high = error
detection/correction
enabled)
ES input
(low = valid DOUT_
on rising edge of
PCLKOUT,
high = valid DOUT_
on falling edge of
PCLKOUT)
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相關代理商/技術參數
參數描述
MAX9272GTV+ 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:28-Bit GMSL Deserializer for Coax or STP Cable
MAX9273 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:22-Bit GMSL Serializer with Coax or STP Cable Drive
MAX9273GTL/V+ 功能描述:串行器/解串器 - Serdes 1.5Gbps 22-bit Coax/STP serializer RoHS:否 制造商:Texas Instruments 類型:Deserializer 數據速率:1.485 Gbit/s 輸入類型:ECL/LVDS 輸出類型:LVCMOS 輸入端數量:1 輸出端數量: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
MAX9273GTL/V+T 功能描述:串行器/解串器 - Serdes 1.5Gbps 22-bit Coax/STP serializer RoHS:否 制造商:Texas Instruments 類型:Deserializer 數據速率:1.485 Gbit/s 輸入類型:ECL/LVDS 輸出類型:LVCMOS 輸入端數量:1 輸出端數量: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
MAX9273GTL+ 功能描述:串行器/解串器 - Serdes 1.5Gbps 22-bit Coax/STP serializer RoHS:否 制造商:Texas Instruments 類型:Deserializer 數據速率:1.485 Gbit/s 輸入類型:ECL/LVDS 輸出類型:LVCMOS 輸入端數量:1 輸出端數量: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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