aduc7030 Analog Devices, Inc., aduc7030 Datasheet - Page 140

• Manufacturer Part Number: aduc7030
• Description: Integrated Precision Battery Sensor For Automotive
• Manufacturer: Analog Devices, Inc.

ADuC7030/ADuC7033
LIN Diagnostics
The ADuC7030/ADuC7033 features the capability to non-
intrusively monitor the current state of the LIN pin. This read
back functionality is implemented via GPIO_11. The current
state of the LIN pin is contained in GP2DAT[4]
It is also possible to drive the LIN pin high and low via user
software, allowing the user to detect open circuit conditions.
This functionality is implemented via GPIO_12. To enable this
functionality GPIO_12 must be configured as a GPIO via
GP2CON[20]. Once configured, the LIN pin may be pulled
high or low via GP2DAT.
The ADuC7030/ADuC7033 also features short circuit
protection on the LIN pin. If a short circuit condition is
detected on the LIN pin, HVSTA[2] is set. This bit is cleared by
re-enabling the LIN driver via HVCFG1[3]. It is possible to
disable this feature via HVCFG1[2].
RESET AND
COUNTING
LHSVAL1
STARTS
LHSVAL1 = 0x3F
GENERATED
INTERRUPT
COMPARE
BREAK
LHSVAL0 STARTS
COUNTING
START
BIT
T
BIT
Figure 47. Example LIN Configuration
COUNTING. STOP
LHSVAL0 STOPS
GENERATED
INTERRUPT
Rev. PrE | Page 140 of 150
UART CONFIGURED
DISABLED EXCEPT
BREAK COMPARE
LHS INTERRUPTS
STOP
LIN Operation during Thermal Shutdown
When a Thermal event occurs, i.e. HVSTA[3] is set, and LIN
communications continues uninterrupted.
BIT
START
BIT
RECEIVING DATA
VIA UART
BEGIN
ID0
Preliminary Technical Data
ID1
ID2
ID3
ID4
ID5
P0
P1
STOP
BIT