參數(shù)資料
型號： MAX9271GTJ+
廠商： Maxim Integrated Products
文件頁數(shù)： 25/49頁
文件大?。?/td> 0K
描述： IC SERIALIZER 16BIT GMSL 32TQFN
標準包裝： 60
系列： *
MAX9271
16-Bit GMSL Serializer with Coax or
STP Cable Drive
31
Maxim Integrated
GPO/GPI Control
GPO on the serializer follows GPI transitions on the dese-
rializer. This GPO/GPI function can be used to transmit
signals such as frame sync in a surround-view camera
system. The GPI-to-GPO delay is 0.35ms (max). Keep
the time between GPI transitions to a minimum 0.35ms.
This includes transitions from the other deserializer in the
coax-mode splitter. Bit D4 of register 0x0E in the deserial-
izer stores the GPI input state. GPO is low after power-up.
The FC can set GPO by writing to the SET_GPO register
bit. Do not send a logic-low value on the deserializer RX/
SDA input (UART mode) longer than 100Fs in either base
or bypass mode to ensure proper GPO/GPI functionality.
Pre/Deemphasis Driver
The serial line driver employs current-mode logic (CML)
signaling. The driver is differential when programmed
for twisted-pair (TP). When programmed for coax, one
side of the CML driver is used. The line driver has pro-
grammable pre/deemphasis that modifies the output to
compensate for cable length. There are 13 preemphasis
settings, as shown in Table 5. Negative preemphasis
levels are deemphasis levels in which the preempha-
sized swing level is the same as normal swing, but the
no-transition data (e.g., a 1 followed by a 1) is deempha-
sized. Program the preemphasis levels through register
0x06 D[3:0] of the serializer. This preemphasis function
compensates the high-frequency loss of the cable and
enables reliable transmission over longer link distances.
Current drive for both TP and coax modes is program-
mable. CMLLVL bits (0x06, D[7:4]) program drive current
in TP and coax modes for a single-ended voltage swing
from 100mV to 500mV.
Spread Spectrum
To reduce the EMI generated by the transitions on the
serial link, the serializer output is programmable for
spread spectrum. If the deserializer driven by the serial-
izer has programmable spread spectrum, do not enable
spread for both at the same time or their interaction will
cancel benefits. The deserializer tracks the serializer’s
spread and passes the spread to the deserializer output.
The programmable spread-spectrum amplitudes are
Q
0.5%, Q1%, Q1.5%, Q2%, Q3%, and Q4% (Table 6).
Some spread-spectrum amplitudes can only be used at
lower PCLKIN frequencies (Table 7). There is no PCLKIN
frequency limit for the Q0.5% spread rate.
When the spread spectrum is turned on or off, the serial
link stops for several microseconds and then restarts in
order for the deserializer to lose and relock to the new
serial-data stream.
The serializer includes a sawtooth divider to control the
spread-modulation rate. Autodetection of the PCLKIN
Table 5. TP/Coax Drive Current (CMLLVL = 1000)
*Negative preemphasis levels denote deemphasis.
PREEMPHASIS
LEVEL (dB)*
PREEMP SETTING
(0x06, D[3:0])
ICML
(mA)
IPRE
(mA)
SINGLE-ENDED VOLTAGE SWING
MAX (mV)
MIN (mV)
-6.0
0100
12
4
400
200
-4.1
0011
13
3
400
250
-2.5
0010
14
2
400
300
-1.2
0001
15
1
400
350
0
(power-on default)
0000
16
0
400
1.1
1000
16
1
425
375
2.2
1001
16
2
450
350
3.3
1010
16
3
475
325
4.4
1011
16
4
500
300
6.0
1100
15
5
500
250
8.0
1101
14
6
500
200
10.5
1110
13
7
500
150
14.0
1111
12
8
500
100
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相關代理商/技術(shù)參數(shù)
參數(shù)描述
MAX9271GTJ/V+ 功能描述:串行器/解串器 - Serdes 1.5Gbps 16-bit Coax/STP serializer 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
MAX9271GTJ/V+T 功能描述:串行器/解串器 - Serdes 1.5Gbps 16-bit Coax/STP serializer 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
MAX9271GTJ+ 功能描述:串行器/解串器 - Serdes 1.5Gbps 16-bit Coax/STP serializer 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
MAX9271GTJ+T 功能描述:串行器/解串器 - Serdes 1.5Gbps 16Bit Coax/STP serializer 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
MAX9272 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
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