461
edits
Changes
Jump to navigation
Jump to search
Line 199:
Line 199: − + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
no edit summary
|
|
{| align="center" cellpadding="4" border="0" cellspacing="0" style="text-align:left"
{| align="center" cellpadding="4" border="0" cellspacing="0" style="text-align:left"
| 11 || 10 || 09 || 08 || 07 || 06 || 05 || 04 || 03 || 02 || 01 || 00
| style="width:8.33%" |11 || style="width:8.33%" |10 || style="width:8.33%" |09 || style="width:8.33%" |08 || style="width:8.33%" |07 || style="width:8.33%" |06 || style="width:8.33%" |05 || style="width:8.33%" |04 || style="width:8.33%" |03 || style="width:8.33%" |02 || style="width:8.33%" |01 || style="width:8.33%" |00
|-
|-
| Write || Seq || DC || Addr<sub>2</sub> || Addr<sub>1</sub> || Addr<sub>0</sub> || Pow<sub>1</sub> || Pow<sub>0</sub> || Shadow || DC || Range || Coding
| Write || Seq || DC || Addr<sub>2</sub> || Addr<sub>1</sub> || Addr<sub>0</sub> || Pow<sub>1</sub> || Pow<sub>0</sub> || Shadow || DC || Range || Coding
|}
|}
The sections of the control register are:
* Write:
** if 0, do not update the remaining 11 bits of the control register
** if 1, write new data to the control register
* Seq: used for a feature we don't need: set to zero
* DC: don't care
* Addr(2:0): 3-bit address of channel to report on during next conversation
* Pow(1:0): used for changing power modes: set to "11"
* Shadow: used for a feature we don't need: set to zero
* DC: don't care
* Range: set to zero
** if 0, analog input range is 0 to 2*V<sub>Ref</sub>
** if 1, analog input range is 0 to V<sub>Reg</sub>
* Coding: set to zero
** if 0, output is twos-complement
** if 1, output is binary-coded decimal
Thus a conversation to read the voltage only (and not update the control register would look like
{| align="center" cellpadding="1" border="1" cellspacing="1"
|
{| align="center" cellpadding="4" border="0" cellspacing="0" style="text-align:left"
| style="width:8.33%" |11 || style="width:8.33%" |10 || style="width:8.33%" |09 || style="width:8.33%" |08 || style="width:8.33%" |07 || style="width:8.33%" |06 || style="width:8.33%" |05 || style="width:8.33%" |04 || style="width:8.33%" |03 || style="width:8.33%" |02 || style="width:8.33%" |01 || style="width:8.33%" |00
|-
| 0 || x || x || x || x || x || x || x || x || x || x || x
|}
|}
|}
|}