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Complete Single-Conversion
Television Tuner
Write Cycle
When addressed with a write command, the MAX3541
allows the master to write to a single register or to multi-
ple successive registers.
A write cycle begins with the bus master issuing a
START condition followed by the seven slave address
bits and a write bit (R/ W = 0). The MAX3541 issues an
ACK if the slave address byte is successfully received.
The bus master must then send to the slave the
address of the first register it wishes to write to. If the
slave acknowledges the address, the master can then
write one byte to the register at the specified address.
Data is written beginning with the most significant bit.
The MAX3541 again issues an ACK if the data is suc-
cessfully written to the register. The master can contin-
ue to write data to the successive internal registers with
the MAX3541 acknowledging each successful transfer,
or it can terminate transmission by issuing a STOP con-
dition. The write cycle does not terminate until the mas-
ter issues a STOP condition.
Figure 2 illustrates an example in which registers 0
through 2 are written with 0x0E, 0xD8, and 0xE1,
respectively.
Read Cycle
A read cycle begins with the bus master issuing a
START condition followed by the seven slave address
bits and a write bit (R/ W = 0). The MAX3541 issues an
ACK if the slave address byte is successfully
received. The master then sends the 8-bit address of
the first register that it wishes to read. The MAX3541
then issues another ACK. Next, the master must issue
a START condition followed by the 7 slave address
bits and a read bit (R/ W = 1). The MAX3541 issues an
ACK if it successfully recognizes its address and
begins sending data from the specified register
address starting with the most significant bit (MSB).
Data is clocked out of the MAX3541 on the rising
edge of SCL. On the 9th rising edge of SCL, the mas-
ter can issue an ACK and continue reading succes-
sive registers or it can issue a NACK followed by a
STOP condition to terminate transmission. The read
cycle does not terminate until the master issues a
STOP condition. Figure 3 illustrates an example in
which registers 0 and 1 are read back.
START
WRITE DEVICE
ADDRESS
11000[ADDR2][ADDR1]
R/W
0
ACK
—
WRITE REGISTER
ADDRESS
0x00
ACK
—
WRITE DATA TO
REGISTER 0x00
0x0E
ACK
—
WRITE DATA TO
REGISTER 0x01
0xD8
ACK
—
WRITE DATA TO
REGISTER 0x02
0xE1
ACK
—
STOP
Figure 2. Example: Write Registers 0 Through 2 with 0x0E, 0xD8, and 0xE1, Respectively
START
WRITE DEVICE
ADDRESS
110000[ADDR2][ADDR1]
R/W ACK
0
—
WRITE 1ST REGISTER
ADDRESS
0x00
ACK
—
START
WRITE DEVICE
ADDRESS
110000[ADDR2][ADDR1]
R/W ACK
1 —
READ DATA
REG 0
D7–D0
ACK
—
READ DATA
REG 1
D7–D0
NACK
—
STOP
Figure 3. Example: Read Data from Registers 0 and 1
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相关代理商/技术参数
MAX3542CLM+ 功能描述:调谐器 Single-Conversion Television Tuner RoHS:否 制造商:NXP Semiconductors 功能: 噪声系数: 工作电源电压: 最小工作温度: 最大工作温度:
MAX3542CLM+T 功能描述:调谐器 DVB Tuner RoHS:否 制造商:NXP Semiconductors 功能: 噪声系数: 工作电源电压: 最小工作温度: 最大工作温度:
MAX3542EVKIT+ 功能描述:射频开发工具 MAX3542 Eval Kit RoHS:否 制造商:Taiyo Yuden 产品:Wireless Modules 类型:Wireless Audio 工具用于评估:WYSAAVDX7 频率: 工作电源电压:3.4 V to 5.5 V
MAX3543CTL+ 功能描述:调谐器 Broadband Analog & Digital TV Tuner RoHS:否 制造商:NXP Semiconductors 功能: 噪声系数: 工作电源电压: 最小工作温度: 最大工作温度:
MAX3543CTL+T 功能描述:调谐器 Broadband Analog & Digital TV Tuner RoHS:否 制造商:NXP Semiconductors 功能: 噪声系数: 工作电源电压: 最小工作温度: 最大工作温度:
MAX3543EVKIT+ 功能描述:射频开发工具 MAX3542/3 Eval Kit RoHS:否 制造商:Taiyo Yuden 产品:Wireless Modules 类型:Wireless Audio 工具用于评估:WYSAAVDX7 频率: 工作电源电压:3.4 V to 5.5 V
MAX3544CTL+ 制造商:Maxim Integrated Products 功能描述:EVKIT FOR DIGITAL TV TUNER - Rail/Tube
MAX3544CTL+T 制造商:Maxim Integrated Products 功能描述:MULTIBAND DIGITAL TELEVISION TUNER - Tape and Reel