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參數(shù)資料
| 型號： | MAX9272GTM+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 19/47頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC DSERIALIZER 28BIT GMSL 48TQFN |
| 標準包裝： | 43 |
| 系列： | * |
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MAX9272
28-Bit GMSL Deserializer for Coax or STP Cable
26
Maxim Integrated
As shown in Figure 20, the remote-side device converts
packets going to or coming from the peripherals from
UART format to I2C format and vice versa. The remote
device removes the byte number count and adds or
receives the ACK between the data bytes of I2C. The I2C
bit rate is the same as the UART bit rate.
Interfacing Command-Byte-Only
I2C Devices with UART
The serializer/deserializer UART-to-I2C conversion can
interface with devices that do not require register address-
es, such as the MAX7324 GPIO expander. In this mode,
the I2C master ignores the register address byte and
directly reads/writes the subsequent data bytes (Figure
ter using the I2CMETHOD bit. I2CMETHOD = 1 sets
command-byte-only mode, while I2CMETHOD = 0 sets
normal mode where the first byte in the data stream is
the register address.
UART Bypass Mode
In bypass mode, the serializer/deserializer ignore UART
commands from the FC and the FC communicates with
the peripherals directly using its own defined UART pro-
tocol. The FC cannot access the serializer/deserializer
registers in this mode. Peripherals accessed through the
forward control channel using the UART interface need
to handle at least one PCLKOUT period Q 10ns of jitter
due to the asynchronous sampling of the UART signal
by PCLKOUT. Set MS/HVEN = high to put the control
channel into bypass mode. For applications with the FC
connected to the deserializer, there is a 1ms wait time
between setting MS/HVEN high and the bypass con-
trol channel being active. There is no delay time when
switching to bypass mode when the FC is connected to
the serializer. Do not send a logic-low value longer than
100Fs to ensure proper GPO functionality. Bypass mode
accepts bit rates down to 10kbps in either direction. See
the GPO/GPI Control section for GPI functionality limita-
tions. The control-channel data pattern should not be
held low longer than 100Fs if GPI control is used.
I2C Interface
In I2C-to-I2C mode, the deserializer’s control-channel inter-
face sends and receives data through an I2C-compatible
2-wire interface. The interface uses a serial-data line
(SDA) and a serial-clock line (SCL) to achieve bidirec-
tional communication between master and slave(s). A FC
master initiates all data transfers to and from the device
and generates the SCL clock that synchronizes the data
transfer. When an I2C transaction starts on the local-side
device’s control-channel port, the remote-side device’s
control-channel port becomes an I2C master that inter-
faces with remote-side I2C perhipherals. The I2C master
must accept clock stretching, which is imposed by the
deserializer (holding SCL low). The SDA and SCL lines
operate as both an input and an open-drain output. Pullup
resistors are required on SDA and SCL. Each transmission
consists of a START condition (Figure 5) sent by a master,
followed by the device’s 7-bit slave address plus a R/W
bit, a register address byte, one or more data bytes, and
finally a STOP condition.
Figure 17. GMSL UART Data Format for Base Mode
Figure 18. SYNC Byte (0x79)
Figure 19. ACK Byte (0xC3)
START
D0
D1
D2
D3
D4
D5
D6
D7
PARITY
STOP
1 UART FRAME
FRAME 1
FRAME 2
FRAME 3
STOP
START
STOP
START
D0
10011110
D1
D2
D3
D4
D5
D6
D7
PARITY STOP
START
D0
1100001
1
D1
D2
D3
D4
D5
D6
D7
PARITY STOP
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX9272GTM/V+ | 功能描述:串行器/解串器 - Serdes 1.5Gbps 28-bit Coax/STP deserializr 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 |
| MAX9272GTM/V+T | 功能描述:串行器/解串器 - Serdes 1.5Gbps 28-bit Coax/STP deserializr 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 |
| MAX9272GTM+ | 功能描述:串行器/解串器 - Serdes 1.5Gbps 28-bit Coax/STP deserializr 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 |
| MAX9272GTM+T | 功能描述:串行器/解串器 - Serdes 1.5Gbps 28Bit Coax/STP deserializr 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 |
| 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 |
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