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參數(shù)資料
| 型號： | MAX9257GTL+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 30/52頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC SER/DESER PROG 40-TQFN |
| 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： | 2,500 |
| 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： | 40-WFQFN 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 40-TQFN-EP（5x5） |
| 包裝： | 帶卷 (TR) |
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MAX9257/MAX9258
36
______________________________________________________________________________________
Fully Programmable Serializer/Deserializer
with UART/I2C Control Channel
Read Packet
The ECU writes the sync frame, 7-bit device address
plus read/write bit (R/
W = 1 for read), 8-bit register
address, and number of bytes to be read. The
addressed device responds with read data bytes
(Figure 29). UART read delay is maximum 4 bit times
when reading from the MAX9257 or the MAX9258.
Time Between Frames
Up to two high bit times are allowed between frames.
Reset of Packet Boundary
A high time ranging from 14 UART bit times or more
resets the packet boundary. In this case, the next frame
received is assumed to belong to a new packet by the
MAX9257/MAX9258 and UART-to-I2C converter.
Resetting the boundary is required. Not resetting the
boundary treats the following packets as part of the first
packet, and they may be processed incorrectly.
Data Rate
The control channel data rate in base mode is between
95kbps to 4.25Mbps (Table 28). In bypass mode, the
allowed data rate is DC to 10Mbps (Table 29). For data
rates faster than 4.25Mbps in bypass mode, REG8[5] in
MAX9257 and REG7[5] in MAX9258 must be set high.
Set the control channel data rate in base mode by writ-
ing to REG8[1:0] in the MAX9257 and REG7[1:0] in the
MAX9258. These write commands take effect in the
next control channel.
Programming the FAST bit takes effect in the same con-
trol channel. Both the MAX9257 and the MAX9258
should have the same settings for FAST. It is recom-
mended to first program the FAST bit in the MAX9257.
Programming FAST to 1 results in shorter UART pulses
on the differential link.
MAX9257/MAX9258 Device
Address Programming
The MAX9257/MAX9258 have device addresses that
can be programmed to any 7-bit address. Table 30
shows the default addresses.
MAX9257 REG8[1:0]
MAX9258 REG7[1:0]
RANGE
00
95kbps–400kbps
(default)
01
400kbps–1Mbps
10
1Mbps–4.25Mbps
11
1Mbps–4.25Mbps
Table 28. Control Channel Data Rate in
Base Mode
MAX9257 REG8[5]
MAX9258 REG7[5]
RANGE
0
DC–4.25Mbps
1
4.25Mbps–10Mbps
Table 29. Control Channel Data Rate in
Bypass Mode
DEFAULT
DEVICE
BINARY
HEX
MAX9257
1111 1010
0xFA
MAX9258
1111 1000
0xF8
Table 30. Default Device Address
NUMBER OF BYTES
REG ADDRESS
BYTE 1
BYTE N
DEV ADDR +
R/W
SYNC
Figure 29. UART Read Packet
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX9258 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Fully Programmable Serializer/Deserializer with UART/I2C Control Channel |
| MAX9258A | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Fully Programmable Serializer/Deserializer with UART/I2C Control Channel |
| MAX9258AEVKIT# | 功能描述:界面開發(fā)工具 MAX9257A/58A Eval Kit RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類型:RS-485 工具用于評估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V |
| MAX9258AGCM | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Fully Programmable Serializer/Deserializer with UART/I2C Control Channel |
| MAX9258AGCM/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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