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参数资料
| 型号： | TC9446FG |
| 元件分类： | 消费家电 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP100 |
| 封装： | 14 X 20 MM, 0.65 MM PITCH, PLASTIC, QFP-100 |
| 文件页数： | 6/41页 |
| 文件大小： | 562K |
| 代理商： | TC9446FG |
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TC9446FG
2005-09-28
14
2-2.
I
2
C Mode Setting
2-2-1. Data Transmission Format in I
2
C Mode
The foundations of a data transmission format in the I2C mode are shown in Figure 7.
Fundamentally, the data transmission at the time of the I2C mode checks that ACK bit is set to “L”, after making I2C Address (write = 3Ah) to transmission.
However, at the time of “H”, ACK bit performs Start Condition again, without performing STOP Condition, and transmits I2C Address (3Ah). I2C Transmit 24
bit command after Address transmission.
And, at the time of data Write of TC9446FG, Write of 24 bit data of the number (1-16 word) of words set up by 24 bit command is performed from a MCU, and,
finally, END Condition is transmitted.
Moreover, it checks that transmit I2C Address (read = 3Bh) from TC9446FG at the time of Read to a MCU, without performing END Condition after 24 bit
command transmission, and ACK bit is set to “L”.
However, at the time of “H”, ACK bit performs Start Condition again, without performing STOP Condition, and transmits I2C Address (3Bh).
The word set up by 24 bit command after checking that ACK bit is “L”. Although Read of 24 bit data of a number (1-16 word) is performed, as for the inside of
Read, a MCU needs to set ACK bit to “L” for every 8-bit Read data.
And, only ACK bit added to the last 8 bits is set to “H”, and STOP Condition is transmitted.
Moreover, at the time of transmission of only a 24 bit command which does not perform R/W of data, END Condition is transmitted after 24 bit command
transmission.
In addition, in TC9446FG, polling of the access demand from a MCU is carried out every about 6 ms at the time of decode processing. Therefore, R/W of data
from a MCU need to be performed at the interval of 6 ms or more.
At the time of Write-in, Read-out and a command only shows the transmission format to Figure 7 to Figure 10.
I2C Address (3Ah)
R/W ACK
DATA Hi (8 bit)
ACK
DATA Mid (8 bit)
ACK
DATA Lo (8 bit)
I2C Address
24 bit DATA (1 word to 16 word)
STOP Condition
START Condition
SDA
SCL
Figure 7
Data Transmission Format in the I
2
C Mode
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| TC9447F | SPECIALTY CONSUMER CIRCUIT, PQFP100 |
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相关代理商/技术参数 |
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| TC9447F | 制造商:TOSHIBA 制造商全称:Toshiba Semiconductor 功能描述:Single-Chip Audio Digital Signal Processor |
| TC9452F | 制造商:TOSHIBA 制造商全称:Toshiba Semiconductor 功能描述:SINGLE CHIP SURROUND LSI |
| TC9455F | 制造商:TOSHIBA 制造商全称:Toshiba Semiconductor 功能描述:TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic |
| TC9455N | 制造商:TOSHIBA 制造商全称:Toshiba Semiconductor 功能描述:TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic |
| TC9456F | 制造商:TOSHIBA 制造商全称:Toshiba Semiconductor 功能描述:SINGLE CHIP SURROUND LSI WITH A BUILT-IN SRS |
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