MCP4726A2T-E Datasheet, PDF (48/86 Pages) Microchip Technology – 8-/10-/12-Bit Voltage Output Digital-to-Analog Converter

MCP4706/4716/4726
5.3.7 GENERAL CALL
The General Call is a method that the “master” device
can communicate with all other “slave” devices. In a
multi-master application, the other master devices are
operating in Slave mode. The General Call address
has two documented formats. These are shown in
Figure 5-11.
The MCP47X6 has two General Call commands. The
function of these commands are:
• Reset the device(s) (Software Reset)
• Wake-Up the device(s)
For details on the operation of the MCP47X6’s General
Call commands, see Section 6.6 “I2C General Call
Commands”.
Note:
Only one General Call command per issue
of the General Call control byte. Any
additional General Call commands are
ignored and Not Acknowledged.
Second Byte
S0000 0000 A x xxx Xx x0AP
General Call Address
“7-bit Command”
Reserved 7-bit Commands (By I²C Specification – NXP specification # UM10204, Rev. 03 19 June 2007)
‘0000 011’b - Reset and write programmable part of slave address by hardware
‘0000 010’b - Write programmable part of slave address by hardware
‘0000 000’b - NOT Allowed
The Following is a “Hardware General Call” Format
Second Byte
n occurrences of (Data + A)
S 0 0 0 0 0 0 00 A x x x x X x x 1 A x x x x X x x X A P
General Call Address
“Master Address”
FIGURE 5-11:
General Call Formats.
This indicates a “Hardware General Call”
DS22272C-page 48
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