6.2

Direct Control Mode (DCM)

When SYNC and LOAD inputs are driven by the same signal, the device operates in direct control mode (DCM).

In DCM the SYNC / LOAD signal operates as an active low input enable:

•

When the signal is high, the current output configuration is kept regardless the input values

•

When the signal is low, each channel input directly drives the respective output

This operation mode can also be set shorting both signals to the digital ground; in this case the channel outputs

are always directly driven by the inputs except when OUT_EN is low (outputs disabled).

Table 15. Interface signal operation in DCM

SYNC / LOAD

OUT_EN

Device behavior

Don't care

Low(1)

The outputs are disabled (turned off)

High

High

The outputs are left unchanged

Low

High

The channel inputs drive the outputs

1. The outputs are turned off on OUT_EN falling edge and they are kept disabled as long as it is low

Figure 10. Direct Control Mode, IC configuration

ISO808, ISO808-1

Direct

Control Mode (DCM)

DS14169 - Rev 1

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