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參數(shù)資料
| 型號： | MAX9259GCB/V+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 24/51頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC SERIALIZER GMSL 64TQFP |
| 標(biāo)準(zhǔn)包裝： | 160 |
| 系列： | * |
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Gigabit Multimedia Serial Link with Spread
Spectrum and Full-Duplex Control Channel
MAX9259/MAX9260
30 _____________________________________________________________________________________
Figure 24. UART Protocol for Base Mode
Figure 25. UART Data Format for Base Mode
Figure 26. SYNC Byte (0x79)
Figure 27. ACK Byte (0xC3)
should assume there was an error in the packet when the
slave device receives it, or that an error occurred during
the response from the slave device. In base mode, the
F
C must keep the UART Tx/Rx lines high for 16 bit times
before starting to send a new packet.
As shown in Figure 28, the remote-side device converts
the packets going to or coming from the peripherals from
the UART format to the 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’s data rate is the same as the UART data rate.
Interfacing Command-Byte-Only
I2C Devices
The MAX9259/MAX9260 UART-to-I2C conversion inter-
faces with devices that do not require register address-
es, such as the MAX7324 GPIO expander. Change the
communication method of the I2C master 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. In this mode, the I2C master ignores the reg-
ister address byte and directly reads/writes the subse-
quent data bytes (Figure 29).
WRITE DATA FORMAT
SYNC
DEV ADDR + R/W
REG ADDR
NUMBER OF BYTES
SYNC
DEV ADDR + R/W
REG ADDR
NUMBER OF BYTES
BYTE 1
BYTE N
ACK
BYTE N
BYTE 1
ACK
MASTER READS FROM SLAVE
READ DATA FRMAT
MASTER WRITES TO SLAVE
MASTER READS FROM SLAVE
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
1
0
1
0
D1
D2
D3
D4
D5
D6
D7
PARITY STOP
START
D0
1
0
1
D1
D2
D3
D4
D5
D6
D7
PARITY STOP
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
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| MAX9260EVKIT+ | 功能描述:界面開發(fā)工具 MAX9260 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 |
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