AS6200 datasheet(22/35 Pages) AMSCO

22 / 35 page

Page 22

ams Datasheet

Document Feedback

[v1-01] 2016-Jun-17

AS6200 − Detailed Descriptions

Summary of Bus Commands

Figure 29:

Summary of Bus Commands

Timeout Function

The serial interface of the slave device is reset if the clock signal

SCL is kept low for typ. 30ms. Such a condition results in a

release of the data line by the slave in case it has been pulled

to low level. The slave remains inactive after a timeout and waits

for a new START command invoked by the bus master. In order

to prevent a timeout, the bus transfer rate must be higher than

1kHz.

Bus Conditions

The following conditions occur on the serial bus which is

compatible to the I²C-Bus.

•Bus Idle: The signals SDA and SCL are not actively driven

and pulled to a high level by an external pull-up resistor.

• Start Data Transfer: A transition of the SDA input from

high to low level while the SCL signal is kept at high level

results in a START condition. Such a START condition must

precede any data transfer.

• Stop Data Transfer: A transition of the SDA input from

low to high level while the SCL signal is kept at high level

results in a STOP condition. Any data transfer is finished

by generating a STOP or START condition.

• Data Transfer: The master device defines the number of

data bytes between a START and STOP condition and there

is no limitation in the amount of data to be transmitted.

If it is desired to read only a single MSB byte without the

LSB byte, a termination of the data transfer can be

provoked by issuing a START or STOP condition on the bus.

• Acknowledge: It is mandatory for each slave device to

respond with acknowledge if the device is addressed by

the master. Acknowledge is indicated by pulling down the

data line (SDA) while the clock signal (SCL) is high in the

acknowledge clock phase. In order to avoid an unwanted

START or STOP condition on the bus, setup and hold times

must be met.

The master can signal an end of data transmission by

transmitting a Not-Acknowledge on the last transmitted

data byte by keeping the acknowledge bit at high level.

Command

Address

Data Value

General Call Address

000 0000

Device initialization

0000 0110

General Address Acquire

Not supported

High Speed Command

0000 1xxx

AS6200 датащи(PDF) 22 Page - ams AG

AS6200 датащи(HTML) 22 Page - ams AG

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35

датащи скачать

ссылки URL