L9924L datasheet(75/84 Pages) STMICROELECTRONICS

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L9924L

SPI interface

12.4.16

CP-SPREAD-SPECTRUM & LIN SETTING register [0x08]

This register is used to activate/deactivate the spread spectrum strategy for the charge

pump module and to choose the relevant modulation frequency; it also contains some LIN

setting.

Table 58. CP-SPREAD-SPECTRUM & LIN SETTING register [0x08]

Bit

Bit Name

Reset

Value

Description

Reserved

WOBBLE_MODE_DIS

CP wobble mode disable:

0: Pseudo-random wobble is active, (Default)

1: Wobble mode is off

WOBBLE_FREQUENCY

CP wobble frequency selector:

0: 8 kHz (Default)

1: 16 kHz

10-5

Reserved

LIN_PU_DIS

LIN pull-up resistor disable bit:

0: LIN pull-up resistor is enabled (Default)

1: LIN pull-up resistor is disabled

3LIN_IN_USE (1)

LIN transceiver enable bit:

0: LIN transceiver is disabled (Default)

1: LIN transceiver is enabled. This mode is effective

only when respective OTP protection bit isn’t

programmed. OTP protection status can be acquired

by reading LIN_PROT_OTP bit in [0x1F] register

SPI_LINRX_ONLY

LIN receiver-only enable bit:

0: Both LIN receiver and transmitter are available

(Default)

1: LIN transmitter is unavailable

SPI_LINTX_TOUT (1)

1. In order to establish LIN traffic and related error handling it is mandatory LIN_IN_USE=1: write 0x0008 '

[0x08] register, SPI TX frame 0xA00008. Conversely SPI_LINTX_TOUT bit can be optionally set to enable

here below 12-ms LIN error handling features:

"LIN bus 12-ms permanent dominant, notified into LIN_PERM_DOM R/O bit in [0x12] register

"LIN TX dominant 12-ms time-out, notified into LIN_TX_DOM R/O bit in [0x12] register

In this case: write 0x000A ' [0x08] register, SPI TX frame 0xA0400A.

LIN TX dominant 12ms time-out enable bit:

0: LIN TX dominant time-out detection is disabled

(Default)

1: LIN TX dominant time-out detection is enabled

LINFLASH

LIN flash mode enable bit:

0: Flash mode is disabled (Default)

1: Flash mode is enabled. This mode allows to

increase standard high-speed data rate (>19.2kb/s)

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