參數(shù)資料
型號(hào)： MAX9249GCM/V+
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 20/36頁(yè)
文件大?。?/td> 0K
描述： IC SERIALIZER GMSL LVDS 48TQFP
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
數(shù)據(jù)速率： 2.5Gbs
輸入類型： LVDS
輸出類型： 串行
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-TQFN 裸露焊盤
供應(yīng)商設(shè)備封裝： 48-TQFP（7x7）
包裝： 管件
______________________________________________________________________________________ 27
MAX9249
Gigabit Multimedia Serial Link
Serializer with LVDS System Interface
Figure 24. State Diagram, CDS = High (Camera Application)
Case 4: Remote Side in Sleep Mode
After power-up or when PWDN transitions from low to
high, the remote device (GMSL deserializer) starts up in
sleep mode. The high-speed link establishes automati-
cally after MAX9249 powers up with a stable RXCLKIN_
and sends a wake-up signal to the GMSL deserializer.
Use this mode in applications where the GMSL deserial-
izer powers up before the MAX9249.
Image-Sensing Applications
For image-sensing applications, connect the FC to the
GMSL deserializer and set CDS = high for both the
MAX9249 and GMSL deserializer. The GMSL deserial-
izer powers up normally (SLEEP = 0) and continuously
tries to lock to a valid serial input. Table 9 summarizes
both startup cases, based on the state of the MAX9249
AUTOS pin.
Case 1: Autostart Mode
After power-up, or when PWDN transitions from low to
high, the MAX9249 locks to a stable RXCLKIN_ and
sends the high-speed data to the GMSL deserializer. The
GMSL deserializer locks to the serial data and outputs
the video data and clock.
Case 2: Sleep Mode
After power-up or when PWDN transitions from low to
high, the MAX9249 starts up in sleep mode. To wake up
the MAX9249, use the FC to send a GMSL protocol UART
frame containing at least three rising edges (e.g., 0x66),
at a bit rate no greater than 1Mbps. The low-power wake-
up receiver of the MAX9249 detects the wake-up frame
over the reverse control channel and powers up. Reset
the sleep bit (SLEEP = 0) of the MAX9249 using a regular
control channel write packet to power up the device fully.
Send the sleep bit write packet at least 500Fs after the
wake-up frame. The MAX9249 goes back to sleep mode
if its sleep bit is not cleared within 5ms (min) after detect-
ing a wake-up frame.
Applications Information
Self-PRBS Test
The MAX9249/GMSL deserializer link includes a PRBS
pattern generator and bit-error verification function. Set
PRBSEN =1 (0x04 D5) first in the MAX9249 and then the
GMSL deserializer to start the PRBS test. Set PRBSEN
=0 (0x04 D5) first in the GMSL deserializer and then the
MAX9249 to exit the PRBS self-test. The GMSL deserial-
izer uses an 8-bit register (0x0E) to count the number of
detected errors. The control link also controls the start
and stop of the error counting. During PRBS mode, the
device does not count decoding errors and the GMSL
deserializer ERR output reflects PRBS errors only. Refer
to the respective GMSL deserializer data sheet for more
details.
LOW
HIGH
1
0
SEREN
SLEEP
1
POWER-UP VALUE
SEREN = 0
FOR > 8ms
VIDEO LINK
OPERATING
VIDEO LINK
PRBS TEST
WAKE-UP
SLEEP = 1
WAKE-UP SIGNAL
REVERSE LINK
CONFIG
LINK STARTED
CLINKEN = 0 OR
SEREN = 1
CLINKEN = 1
UNLOCKED
LOCKED
CONFIG LINK
SLEEP = 0,
SLEEP
POWER-ON
IDLE
POWER-OFF
ALL STATES
PWDN = LOW OR
SLEEP = 1
POWER-DOWN
OR
POWER-OFF
AUTOS = LOW
PWDN = HIGH,
POWER-ON
VIDEO
LINK LOCKING
AUTOS PIN
SETTING
CONFIG LINK
OPERATING
PROGRAM
REGISTERS
CLINKEN = 0 OR
SEREN = 1
VIDEO LINK
LOCKED
VIDEO LINK
UNLOCKED
PRBSEN = 0
PRBSEN = 1
SEREN = 1,
RXCLKIN_ RUNNING
SEREN = 0 OR
NO RXCLKIN_
SEREN = 0 OR
NO RXCLKIN_
PWDN = HIGH,
POWER-ON,
AUTOS = HIGH
SLEEP = 0,
SLEEP = 1
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