- 您现在的位置：买卖IC网 > PDF目录11687 > MAX9257AGCM/V+ (Maxim Integrated Products)IC SERDE PROG UART/I2C 48TQFP PDF资料下载
参数资料
| 型号： | MAX9257AGCM/V+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 26/53页 |
| 文件大小： | 0K |
| 描述： | IC SERDE PROG UART/I2C 48TQFP |
| 标准包装： | 250 |
| 系列： | * |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页当前第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页
Maxim Integrated Products 32
MAX9257A/MAX9258A
Fully Programmable Serializer/Deserializer
with UART/I2C Control Channel
Closing the Control Channel
After the MAX9257A detects the active VSYNC edge, it
sends three synchronization words. Once the MAX9258A
sees the active VSYNC transition and detects three syn-
chronization words, it enters the control channel phase
and CCEN goes high. There is a brief delay of T1 between
the VSYNC transition and CCEN transitioning high. The
ECU is allowed to communicate when CCEN is high.
If the ECU does not communicate while CCEN is high
(Figure 22), the link remains silent and STO starts counting
towards its preset timeout counter value. If STO times out
(T2), CCEN transitions low and the control channel closes.
If the ECU communicates while CCEN is high and before
STO expires (Figure 23), the STO timer is turned off and
ETO timer is enabled. The ETO counter (ETOCNT+1) is
reset to 0 whenever activity from ECU (base mode) or
ECU and Camera (bypass mode) is detected. As long
as there is activity from ECU (base mode) or ECU and
Camera (bypass mode) on the link, the channel does not
close and the ETO counter resets. After the ECU (base
mode) or ECU and Camera (bypass mode) ceases link
activity, ETO times out (T4), CCEN transitions low, and
the control channel closes.
Another way to close the control channel in base mode
is for the ECU to send an end frame (EF) to close the
control channel without waiting for ETO to time out.
Whenever EF is received by both the devices, control
channel closes immediately and CCEN goes low. A syn-
chronization frame must precede EF. End frame cannot
be used in bypass mode. The control channel must close
by EF to report errors back to the ECU.
After the control channel closes, there is a brief handshake
MAX9257A and the MAX9258A. The MAX9258A sends a
special lock frame to the MAX9257A to indicate if PLL is
still locked. The MAX9258A sends the lock frame if the
number of decoding errors didn’t exceed a threshold in
the last LVDS video phase session. The MAX9258A fea-
tures a proprietary VCO lock that prevents frequency drift
while in the control channel for extended periods of time.
If MAX9257A receives the lock frame, it understands that
the MAX9258A is in a locked state and sends a short
training sequence. If the lock frame is not received by the
MAX9257A, it assumes that the MAX9258A is not locked
and sends a long training sequence. After the short
or long training sequence is complete, the MAX9257A
Figure 23. Control Channel Closing Due to ETO Timeout
VIDEO
HSK
VSYNC_IN
SDI/O
CCEN
T1
T4 (BASE MODE)
T5
TX
RX
DOUT_
FROZEN
T1 = TIME TO ENTER CONTROL CHANNEL
T4 = ETO TIMEOUT PERIOD
T5 = CONTROL CHANNEL EXIT TIME DUE TO ETO
HSK = HANDSHAKING BETWEEN MAX9257 AND MAX9258
ECU
ACTIVITY
T4 (BYPASS MODE)
相关PDF资料 |
PDF描述 |
|---|---|
| MAX9209GUM+TD | IC PROG DC-BAL 21BIT SER 48TSSOP |
| MAX9246EUM/V+T | IC DESERIALIZER 21BIT 48TSSOP |
| VE-J3Y-IX-F4 | CONVERTER MOD DC/DC 3.3V 49.5W |
| VI-B4W-IW-F3 | CONVERTER MOD DC/DC 5.5V 100W |
| MAX9244EUM/V+T | IC DESERIALIZER 21BIT 48TSSOP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX9257AGCV | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Fully Programmable Serializer/Deserializer with UART/I2C Control Channel |
| MAX9257AGTL | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Fully Programmable Serializer/Deserializer with UART/I2C Control Channel |
| MAX9257AGTL/V+ | 功能描述:串行器/解串器 - Serdes Prog Serializer / Deserializer RoHS:否 制造商:Texas Instruments 类型:Deserializer 数据速率:1.485 Gbit/s 输入类型:ECL/LVDS 输出类型:LVCMOS 输入端数量:1 输出端数量:20 工作电源电压:2.375 V to 2.625 V 工作温度范围:0 C to + 70 C 封装 / 箱体:TQFP-64 |
| MAX9257AGTL/V+T | 功能描述:串行器/解串器 - Serdes Prog Serializer / Deserializer RoHS:否 制造商:Texas Instruments 类型:Deserializer 数据速率:1.485 Gbit/s 输入类型:ECL/LVDS 输出类型:LVCMOS 输入端数量:1 输出端数量:20 工作电源电压:2.375 V to 2.625 V 工作温度范围:0 C to + 70 C 封装 / 箱体:TQFP-64 |
| MAX9257AGTL+ | 功能描述:串行器/解串器 - Serdes Prog Serializer / Deserializer RoHS:否 制造商:Texas Instruments 类型:Deserializer 数据速率:1.485 Gbit/s 输入类型:ECL/LVDS 输出类型:LVCMOS 输入端数量:1 输出端数量:20 工作电源电压:2.375 V to 2.625 V 工作温度范围:0 C to + 70 C 封装 / 箱体:TQFP-64 |
发布紧急采购，3分钟左右您将得到回复。