TB2932HQ Просмотр технического описания (PDF) - Toshiba

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TB2932HQ

Maximum Power 49 W BTL × 4-ch Audio Power IC

Toshiba 

TB2932HQ

As initially, the write data is set when the on diagnostic cycle enable (IB1 D6 = 1), the turn on

diagnosis can be available for repeated use by sending the read command repeatedly after the initial

set up as shown as Figure 5.

Therefore, it is useful to check number of cycles from Power ON to the output appearance.

This IC has two built-in diagnostic modes dependent on the Turn-on timing.

A) Normal mode (one shot) of Turn-on diagnostics (data of IB1, D7 = 0)

B) Repeatability mode of Turn-on diagnostics (data of IB1, D7 = 1)

A) Normal mode (one shot diag.)

For example, if you want to get two valid readings, you have to send the command to read three

times.

True data are second data and third data.

This is trigger to enable the

diag cycle.

You have to read for an

interval of 150 ms or more to

get a valid reading.

The Data just received was detected

on the previous diagnostic cycle.

Writing

(diag cycle enable = 1)

(stand by OFF = 0)

Reading 1

Reading 2

Reading 3

I2C command

Pin 10

DB1 D6

Diag enable

Fault event

Latch

About 100 m

For example

Short Load, Open Load etc.

When “Diag enable” goes

high, “Latch” is reflected at the

“Fault event”.

Diag cycle with Turn-ON

9

2009-02-02

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