L99PD08 datasheet(32/41 Pages) STMICROELECTRONICS

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SPI

L99PD08

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Doc ID 15872 Rev 3

The duration of the blank time can be set to three different timings in order to avoid any

wrong detection of failures during an inrush phase when switching on the load. During this

time the diagnostics doesn’t report any failures.

Note:

The Blanking time is started by turning the selected channel on. Write command to address

0x00 with a ‘1’ (former state ‘0’ => OFF).

If a channel is in on-state (ON_OFF reg = ‘1’), the corresponding BLK_TIMEx register is

write protected.

Note:

This blanking time is just used for analog devices and is related to the analog device

connected to the device (see VIP specification).

If a channel is in ON-state (ON_OFF reg = ‘1’), the corresponding TD_SENSE register is

write protected.

Table 32.

BLK_TIME1 register, hex07 (RW-Type)

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

CH7-1

CH7-0

CH6-1

CH6-0

CH5-1

CH5-0

CH4-1

CH4-0

Table 33.

BLK_TIME2 register, hex08 (RW-Type)

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

CH3-1

CH3-0

CH2-1

CH2-0

CH1-1

CH1-0

CH0-1

CH0-0

BLK_TIME

(CHx-1;CHx-0)

0 0 The blank time is not active after activation of the related channel.

0 1 The blank time is active after activation of the related channel and set

to 15 ms (minimum).

1 0 The blank time is active after activation of the related channel and set

to 70 ms (minimum).

1 1 The blank time is active after activation of the related channel and

set to 200ms (minimum) (default).

Table 34.

TD_SENSE register, hex09 (RW-Type)

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

CH7

CH6

CH5

CH4

CH3

CH2

CH1

CH0

CHx 0

the diagnosis is activated 300 µs(min) after the rising edge of the output OUTx

the diagnosis is activated 600 µs(min) after the rising edge of the output OUTx

(default)

Table 35.

CFR register, hex0A (RW-Type)

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

CH7

CH6

CH5

CH4

CH3

CH2

CH1

CH0

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