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| 型号： | LA72730 |
| 元件分类： | 消费家电 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PDIP24 |
| 封装： | 0.300 INCH, DIP-24 |
| 文件页数： | 7/8页 |
| 文件大小： | 189K |
| 代理商： | LA72730 |
LA72730
Continued from preceding page.
DC : voltage
Pin No.
Pin Name
Function
AC : level
Equivalent Circuit
18
POVIDEO
Video output
DC : 1.4V
19
20
POALCR
POALCL
Audio output
DC : 2.4V
200
Ω
10k
Ω
22
PCREG
Reference voltage
DC : 2.4V
500
Ω
10k
Ω
9.6k
Ω
1k
Ω
I2C BUS serial interface specification
(1) Data Transfer Manual
This IC adopts control method (I2C-BUS) with serial data, and controlled by two terminals which called SCL (serial
clock) and SDA (serial data).At first, set up
*1 the condition of starting data transfer, and after that, input 8 bit data to
SDA terminal with synchronized SCL terminal clock. The order of transferring is first, MSB (the Most Scale of Bit),
and save the order. The 9th bit takes ACK (Acknowledge) period, during SCL terminal takes “H”, this IC pull down the
SDA terminal. After transferred the necessary data, two terminals lead to set up and of
*2 data transfer stop condition,
thus the transfer comes to close.
*1 Defined by SDA fall down SCL during ‘H’ period.
*2 Defined by SDA rise up SCL during ‘H’ period.
(2) Transfer Data Format
After transfer start condition, transfers slave address (92h : 1001 0010 ) to SDA terminal, control data, then, stop
condition (See figure 1).
Slave address is made up of 7bits, *3 8th bit shows the direction of transferring data, but this IC does not have READ
mode, so that this bit fix to “L”.
Data works with all of bit, transfer the stop condition before stop 8bit transfer, and to stop transfer, it will be canceled
the transfer dates.
*3 It is called R/W bit.
Fig.1 DATA STRUCTURE
START Condition
Slave Address
R/W
L
ACK
Control data
ACK
STOP condition
(3) Initialize
This IC is initialized for circuit protection. Initial condition is shown on bitmap.
No.A1059-7/8
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| LA72730 | SPECIALTY CONSUMER CIRCUIT, PDIP24 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LA72730_10 | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:Audio/Video Switch |
| LA72730-N-E | 功能描述:视频开关 IC FOR TV AUDIO/VIDEO 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 |
| LA7282 | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:VCR Audio Signal Recording / Playback Processor |
| LA7282M | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:VCR Audio Signal Recording / Playback Processor |
| LA7285 | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:VCR Audio Signal Recording and Playback Processor |
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