aduc7030 Analog Devices, Inc., aduc7030 Datasheet - Page 141
aduc7030
Manufacturer Part Number
aduc7030
Description
Integrated Precision Battery Sensor For Automotive
Manufacturer
Analog Devices, Inc.
Datasheet
1.ADUC7030.pdf
(150 pages)
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Preliminary Technical Data
BIT SERIAL DEVICE (BSD) INTERFACE
BSD is a Pulse Width Modulated signal with 3 possible states:
SYNC, ZERO and ONE. These are detailed, along with their
associated tolerances, in Table 89. The frame length is 19 bits,
and communications occurs at 1200bps ±3%.
Table 89. BSD Bit Level Description
Parameter
TX Rate
Bit
Encoding
T
T
T
Name
SYNC
0
1
131kHz
LHS INTERRUPT
5MHz
1/16
5/16
10/16
Min
1164
IRQEN[7]
ADuC7030
ADuC7030
HARDWARE
LHSVAL0
LHSVAL1
Typ
1200
2/16
6/16
12/16
UART
LHS
RxD ENABLE
LHSCON0[8]
RxD
TxD
Max
1236
3/16
8/16
14/16
INTERRUPT
LOGIC
LHS
Figure 48. BSD I/O Hardware Interface
DISABLE
OUTPUT
Unit
Bits/sec
T
T
T
HVCFG0[1:0]
Period
Period
Period
LIN MODE
FOUR LIN
INTERRUPT
SOURCES
BREAK LHSSTA[0]
START LHSSTA[1]
STOP LHSSTA[2]
BREAK
ERROR LHSSTA[4]
Rev. PrE | Page 141 of 150
INPUT
VOLTAGE
THRESHOLD
REFERENCE
BPF
TRIP REFERENCE
SHORT-CIRCUIT
INTERNAL
BSD COMMUNICATION HARDWARE INTERFACE
The ADuC7030/ADuC7033 emulates the BSD communication
protocol using a GPIO, an IRQ and the LIN Synchronization
Hardware, all of which is under software control
VDD
PROTECTION
INTERNAL
SHORT-CIRCUIT
SENSE
RESISTOR
VOLTAGE
LIN ENABLE
(INTERNAL
HVCFG0[5]
OVER
PULL-UP)
EXTERNAL
IO_VSS
LIN PIN
SCR
VDD
ADuC7030/ADuC7033
MASTER ECU
PROTECTION
DIODE
MASTER ECU
PULL-UP
C
LOAD
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