MAX1455 Maxim Integrated Products, MAX1455 Datasheet - Page 11

• Manufacturer Part Number: MAX1455
• Description: Low-Cost Automotive Sensor Signal Conditioner
• Manufacturer: Maxim Integrated Products

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Table 3. Registers
Table 4. Temp-Index Typical Values
Figure 4. DIO Output Data Format
Table 2. EEPROM ODAC and FSODAC Lookup Table Memory Map
TEMPERATURE
TEMP-INDEX[7:0]
+125
(°C)
+25
+85
-40
FSOTCDAC
REGISTER
OTCDAC
FSODAC
CONFIG
ODAC
AFhex
00hex
7Fhex
80hex
to
to
DATA
HOST
DIO
______________________________________________________________________________________
1 1 1 1 1 1 0
DECIMAL
106
134
20
65
0
Configuration register
Offset DAC register
Offset temperature coefficient DAC register
Full-span output DAC register
Full-span output temperature coefficient DAC register
TRANSMIT
TEMP-INDEX[7:0]
Low-Cost Automotive Sensor Signal
0
1 0
RECEIVE
1
LOW BYTE AND HIGH BYTE
EEPROM ADDRESS ODAC
1
HEXADECIMAL
0
000hex and 001hex
0FEhex and 0FFhex
100hex and 101hex
15Ehex and 15Fhex
1
1
6A
14
41
86
1 1 1 1 1 1 1
WEAK PULLUP
HIGH-Z
REQUIRED
to
to
1
0
0 0 0 0 0 0 0
The MAX1455 provides for reestablishing, or relearning,
the baud rate. The reinitialization sequence is a 1-byte
transmission of FFhex, as follows:
When a serial reinitialization sequence is received, the
receive logic resets itself to its power-up state and
waits for the initialization sequence. The initialization
sequence must follow the reinitialization sequence in
order to reestablish the baud rate.
TRANSMIT
RECEIVE
1 1 1 1 1 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1
DESCRIPTION
1
1
1 1 1 1 1 1 1
WEAK PULLUP
REQUIRED
HIGH-Z
HIGH-Z
EEPROM ADDRESS FSODAC
LOW BYTE AND HIGH BYTE
Reinitialization Sequence
1A0hex and 1A1hex
200hex and 201hex
2FEhex and 2FFhex
1FEhex and 1FFhex
1
0
TRANSMIT
Conditioner
RECEIVE
XXXX
to
to
11