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© Andigilog, Inc. 2006
www.andigilog.com
December 2006 - 70A05012
aSC7531A / aSC7531B
GetVolt5V()
Returns the voltage attached to the 5 volt pin.
Write Data Length:
0x01
Read Data Length:
0x02
Command Code:
0x11
GetVolt3p3V()
Returns the voltage attached to the 3.3 volt pin.
Write Data Length:
0x01
Read Data Length:
0x02
Command Code:
0x12
GetVolt2p5V()
Returns the voltage attached to the 2.5 volt pin.
Write Data Length:
0x01
Read Data Length:
0x02
Command Code:
0x13
GetVoltVccp()
Returns the voltage attached to the VCCP pin.
Write Data Length:
0x01
Read Data Length:
0x02
Command Code:
0x14
GetAllVoltages()
Returns a block of 10-bytes of data containing all 5 voltages in the following order 12V, 5V, 3.3V, 2.5V, and VCCP
Write Data Length:
0x01
Read Data Length:
0x0A
Command Code:
0x10
Optional SST Device Commands
The optional SST commands Alert(), Suspend() are not supported in the aSC7531.
Vendor Specific Extensions
The vendor specific command codes are in the range from 0xE0 and 0xE7. Reading and writing to specific internal registers is
provided for custom tuning of sensor response characteristics.
WriteReg()
Writes to the sensor’s internal registers.
Write Data Length:
2+N (command + address + Number of bytes to write)
Read Data Length:
0x00
Command Code:
0xE0
Example bus transaction to write to a sensor located at address 0x48. This example writes 2 consecutive locations (0x20 and 0x21)
to values 0x25 and 0x28.
8
8
8
8
Target Address
Write Length
Read Length
Command
0x48
0x04
0x00
0xE0
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