Datasheet > QDC10

QDC10

更新时间： 2022-12-17 02:53:08

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描述
Multiplex Data On Battery Power Lines

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QDC10 数据手册

QDC10 - Multiplex Data on Battery Power Lines

3.5.3

Data from QDC10 to Host

When QDC10 device receives a message from the DC-BUS, data errors are corrected and sent to the

Host via a synchronous protocol. A header byte indicates the Host of a data transfer. The following table

describes the formats of data transferred to the Host.

Table 3.2 - Device response header

Header

RxData

Code

Fxh

40h

Description

Receive the following 16-x bytes of Data

Message transmission completed

TxAck

TxWakeAck

Reset

Sleep

40h

01h

Message transmission completed

Reset operation was performed

02h

04h

The device entered to Sleep mode

Corrupted message received. (Would not be transferred to Host)

RxError

For the value of x - see table 3.3

Table 3.3 - Transmit/Receive number of data bytes conversion table

bytes

Notice:

1. The Host has to begin reading data from the QDC10 within 2mS after the rise of DataOut and finish

reading it within 10mS in order not to miss a new message on the DC-BUS.

2. Device responds to Reset and Sleep within 30uS after the command is received. In such case

DataOut rises for byte transfer very quickly. The device responds to Tx command (TxAck) within 30mS.

3. Host has to read device response (Reset, Sleep, TxAck, etc.) within 2mS, otherwise the device may

miss a new message.

4. Transmit of one byte (RxData=FFh) is an illegal command.

SIGNALS

Device signals are defined in table 4.1.

Table 4.1 - Device signals

Signal Name

DataIn

I/O

Description

Serial Data input (for transmission)

Serial Data output

DataOut

ClockIn

TxData

Synchronous data transfer Host Clock

Transmit signal

Received signal

RxData

TxEnable

~Reset

When high, Transmit signal is enabled

Reset device

RxEnable

OscIn

When high, Receive signal is enabled

Crystal In

Crystal Out

OscOut

Res6

Other I/O

SSI Operation – connect to Ground

Application dependent

DS-QDC10 R1.5

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