L9662 datasheet(75/80 Pages) STMICROELECTRONICS

75 / 80 page

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L9662

Functional description

Codes are prioritized with the highest being 1 and the lowest being 7.

Error code 011 is an “or-ed”combination of the following errors:



Start bit error outside of selected operating range



Data length error or stop bit error



CRC/Parity Error of received Satellite Message



Bit time error outside 75% 125% of start bit

If in Hall Effect mode the status register under normal conditions will report a Register

Empty (CHxSF2:CHxSF0='010'). If a fault is on the channel then either a Leakage to supply

and no good data (CHxSF2:CHxSF0='101') or Leakage to ground (CHxSF2:CHxSF0='110')

would be present.

If in Raw data mode the status resister under normal conditions will report Register Empty

(CHxSF2:CHxSF0='010').



If decoder is on then satellite data will be present (See Table 40 under protocol A or

Protocol B)



If decoder is off then D0 will contain data

If a fault is on the channel then either a Leakage to supply and no good data (CHxSF2:

CHxSF0='101') or Leakage to ground (CHxSF2:CHxSF0='110') would be present.

Bit [D00]

POR status

0 = Reset occurred. Bit cleared when read

1 = Normal

Not valid data received i.e.

– Start bit time outside valid range

– Frame length

– Bit time error

– CRC/Parity error on sat received message (in this

case there should be “register empty”)

Leakage to Supply Voltage at ICHx port and Not Good

Data (data lost or register empty or not valid data)

Leakage to Supply at ICHx port & Good Data

Leakage to ground at ICHx port; (Over current

detected switched OFF ICHx analog port, it can be still

OFF if micro never wrote on CCR.D5:D4 to switch ON

port)

CCR D14=1

CCR report is present on word ‘x’: Channel status is

the response selected with bit D14 on CCR command

Table 46. CCR D14 definition (continued)

Priority

CHxSF2

CHxSF1

CHxSF0

Description

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