L9660 datasheet(33/49 Pages) STMICROELECTRONICS

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L9660

Functional description

Bit [D0]

Bit D0 used to report the soft reset sequence status. If valid soft reset

sequences are received, bit D0 is set to ‘1.’ Otherwise, bit D0 is set to

‘0.’ When L9660 receives valid soft reset sequences, it sends a

MISO configuration mode response containing 0x2003 in the next SPI

transmission.

Configuration mode 2

Configuration mode 2 main function is as follows:



Set the latch time for FENx input

The SPI message definition for MOSI commands and MISO responses in this mode are

defined below.

Bits [D9:D8]

Bits are used to set the period of the FEN latch timer. The L9660 has 2

independent timers. A valid FENx input starts the pulse stretch timer.

These bits set the timer duration. These values default to ‘00’ after a

POR event.

MSB

LSB

D15

D14

D13

D12

D11

D10

MOSI Command for configuration mode 2

R/W

Latch bits

MISO Response for configuration mode 2

R/W

Latch bits

Table 17. Configuration mode 2

Bit

MOSI command

MISO response

State

Description

D15

Mode bits

See above

D14

See above

D13

Odd Parity – Includes all 16 bits

D12

Read (default) - When D12=’0’ bits D11 to D0

are ignored

R/W bit

Write – FEN latch programming

D11

D10

FEN latch time

00 = 0ms (default)

01 = 128ms

10 = 256ms

11 = 512ms

Internal Stored Value FEN latch bits

D7 – D0

See above

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