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2.3GHz to 2.7GHz Wireless
Broadband RF Transceiver
DOUT
DON'T CARE
DIN
BIT 1
BIT 2
BIT 5
BIT 6
BIT 13
BIT 14
SCLK
t DS
t CL
t CH
t CS1
CS
t CSO
t CSS
t DH
t CSH
t CSW
SPI REGISTER WRITE
DOUT
DON'T CARE
BIT 6
BIT 13
BIT 14
t D
DIN
BIT 1
BIT 2
BIT 5
DON'T CARE
SCLK
CS
SPI REGISTER READ
Figure 1. 4-Wire SPI Serial-Interface Timing Diagram
delay using the on-chip PA bias DAC. The slow-charg-
ing Rx circuits are in a precharged “idle-off” state for
fast Tx-to-Rx turnaround time.
Clock-Out Only
In clock-out mode, the entire transceiver is off except the
divided reference clock output on the CLKOUT pin and
the clock divider, which remains on.
Programmable Registers
and 4-Wire SPI Interface
The MAX2837 includes 32 programmable 16-bit regis-
ters. The most significant bit (MSB) is the read/write
selection bit. The next 5 bits are register address. The
10 least significant bits (LSBs) are register data.
Register data is loaded through the 4-wire
SPI/MICROWIRE?-compatible serial interface. Data at
DIN is shifted in MSB first and is framed by CS . When
CS is low, the clock is active, and input data is shifted
at the rising edge of the clock. During the read mode,
register data selected by address bits is shifted out to
DOUT at the falling edges of the clock. At the CS rising
edge, the 10-bit data bits are latched into the register
selected by address bits. See Figure 1. The register
values are preserved in shutdown mode as long as the
power-supply voltage is maintained. However, every
time the power-supply voltage is turned on, the regis-
ters are reset to the default values. Note that default
register states are not guaranteed, and the user should
always reprogram all registers after power-up.
MICROWIRE is a trademark of National Semiconductor Corp.
16
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相关代理商/技术参数
MAX2837-RD0117 制造商:Maxim Integrated Products 功能描述:MIMO REFERENCE DESIGN BOARD - Rail/Tube
MAX2838ETM+ 功能描述:射频收发器 3.3-3.8GHz Wireless Broadband RF Txr RoHS:否 制造商:Atmel 频率范围:2322 MHz to 2527 MHz 最大数据速率:2000 Kbps 调制格式:OQPSK 输出功率:4 dBm 类型: 工作电源电压:1.8 V to 3.6 V 最大工作温度:+ 85 C 接口类型:SPI 封装 / 箱体:QFN-32 封装:Tray
MAX2838ETM+T 功能描述:射频收发器 3.3-3.8GHz Wireless Broadband RF Txr RoHS:否 制造商:Atmel 频率范围:2322 MHz to 2527 MHz 最大数据速率:2000 Kbps 调制格式:OQPSK 输出功率:4 dBm 类型: 工作电源电压:1.8 V to 3.6 V 最大工作温度:+ 85 C 接口类型:SPI 封装 / 箱体:QFN-32 封装:Tray
MAX2838EVKIT+ 功能描述:WiFi/802.11开发工具 MAX2838 Eval Kit RoHS:否 制造商:Roving Networks 产品:Evaluation Boards 工具用于评估:RN-171 支持协议:802.11 b/g 频率:2.4 GHz 接口类型:UART 工作电源电压:2 V to 16 V
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MAX2839ASEVKIT+ 功能描述:WiFi/802.11开发工具 MAX2839AS Eval Kit RoHS:否 制造商:Roving Networks 产品:Evaluation Boards 工具用于评估:RN-171 支持协议:802.11 b/g 频率:2.4 GHz 接口类型:UART 工作电源电压:2 V to 16 V
MAX2839ASEWO+ 制造商:Maxim Integrated Products 功能描述:- Rail/Tube
MAX2839ASEWO+T 功能描述:射频收发器 MAX2557A Eval Kit RoHS:否 制造商:Atmel 频率范围:2322 MHz to 2527 MHz 最大数据速率:2000 Kbps 调制格式:OQPSK 输出功率:4 dBm 类型: 工作电源电压:1.8 V to 3.6 V 最大工作温度:+ 85 C 接口类型:SPI 封装 / 箱体:QFN-32 封装:Tray