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参数资料
| 型号： | MAX4548 |
| 厂商： | Maxim Integrated Products, Inc. |
| 元件分类： | 数字信号处理 |
| 英文描述： | Fixed-Point Digital Signal Processors 240-BGA MICROSTAR |
| 中文描述： | 串行控制、三组3x2音频/视频交叉点开关 |
| 文件页数： | 15/20页 |
| 文件大小： | 273K |
| 代理商： | MAX4548 |
the same configuration. Any block that is not selected
in the command byte remains unchanged.
2-Wire S erial Interfac e
The MAX4548 uses a 2-wire I
2
C-compatible serial inter-
face. The COM_ _ registers and the Clickless Mode
register use the “WriteByte” protocol, which consists of
an address byte, followed by a command byte, fol-
lowed by a data byte (Table 5). The Bias register uses
the “WriteWord” protocol, which consists of an address
byte, followed by a command byte, followed by a data
word (Table 6).
To address a given chip, the A0 and A1 bits in the
address byte must duplicate the values present at the
A0 and A1 pins of that chip. The rest of the address bits
must match those shown in Tables 5 and 6. The com-
mand and data-byte details are described in the
Command-Byte and Data-Byte Programming section.
The 2-wire serial interface requires only two I/O lines of
a standard microprocessor port. Figures 3, 4, and 5
detail the timing diagram for signals on the 2-wire bus,
while Tables 5 and 6 detail the format of the signals.
The MAX4548 is a receive-only device and must be
controlled by the bus master device. A bus master
device communicates by transmitting the address byte
of the slave device over the bus and then transmitting
the desired information. Each transmission consists of
a start condition, a command byte, a data byte or word,
and finally a stop condition. The slave device acknowl-
edges the recognition of its address by pulling the SDA
line low for one clock period after the address byte is
transmitted. The slave device also issues a similar
acknowledgment after the command byte and again
after each data byte.
Start and Stop Conditions
The bus master signals the beginning of a transmission
with a start condition by transitioning SDA from high to
low while SCL is high. When the master has finished
communicating with the slave, it issues a stop condition
by transitioning SDA from low to high while SCL is high.
The bus is then free for another transmission.
M
S erially Controlled, Triple 3x2 Audio/Video
Crosspoint S witc hes
______________________________________________________________________________________
15
CS
SCLK
DIN
COMMAND BYTE
DATA BYTE
24
1
C7
D0
C0 D15
Figure 6. 3-Wire Serial-Interface Communication
CS
SCLK
DIN
DOUT
t
CSH
t
CSS
t
CL
t
DS
t
DH
t
DV
t
CH
t
DO
t
TR
t
CSH
Figure 7. 3-Wire Serial-Interface Timing Details
相关PDF资料 |
PDF描述 |
|---|---|
| MAX4548EAX | Serially Controlled, Triple 3x2 Audio/Video Crosspoint Switches |
| MAX4549EAX | Serially Controlled, Triple 3x2 Audio/Video Crosspoint Switches |
| MAX4551 | Fixed-Point Digital Signal Processors 240-BGA MICROSTAR |
| MAX4553CEE | 【15kV ESD-Protected, Quad, Low-Voltage, SPST Analog Switches |
| MAX4553CPE | 【15kV ESD-Protected, Quad, Low-Voltage, SPST Analog Switches |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX4548EAX | 功能描述:视频开关 IC RoHS:否 制造商:Texas Instruments 开关数量:4 开启电阻（最大值）:12 Ohms 传播延迟时间: 开启时间（最大值）: 关闭时间（最大值）: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:WQFN-42 封装:Reel |
| MAX4548EAX+ | 功能描述:视频开关 IC Triple 3x2 A/V Crosspoint Switch RoHS:否 制造商:Texas Instruments 开关数量:4 开启电阻（最大值）:12 Ohms 传播延迟时间: 开启时间（最大值）: 关闭时间（最大值）: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:WQFN-42 封装:Reel |
| MAX4548EAX+T | 功能描述:视频开关 IC Triple 3x2 A/V Crosspoint Switch RoHS:否 制造商:Texas Instruments 开关数量:4 开启电阻（最大值）:12 Ohms 传播延迟时间: 开启时间（最大值）: 关闭时间（最大值）: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:WQFN-42 封装:Reel |
| MAX4548EAX+W | 制造商:Maxim Integrated Products 功能描述:SERIALLY CONTROLLED TRIPLE 3X2 AUDIO/VIDEO CROSSPOINT SWITCH - Rail/Tube |
| MAX4548EAX-T | 功能描述:视频开关 IC RoHS:否 制造商:Texas Instruments 开关数量:4 开启电阻（最大值）:12 Ohms 传播延迟时间: 开启时间（最大值）: 关闭时间（最大值）: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:WQFN-42 封装:Reel |
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