BQ26100_15 Datasheet, PDF (9/29 Pages) Texas Instruments – Based Security and Authentication IC

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bq26100
SLUS696B – JUNE 2006 – REVISED AUGUST 2015
7.4 Device Functional Modes
7.4.1 Profile Command
Pack manufacturers can use the profile command to determine how the device should be programmed.
Profile
M/F = 0x99
Master RX:
0x55
ROM
Function
Flow
Figure 7. Profile Command Flow
7.4.2 Sleep Mode Description
The bq26100 device enters sleep mode when the SDQ enters a stop state or when SDQ encounters an invalid
ID.
7.5 Programming
7.5.1 Communicating with the bq26100 Device
The bq26100 device communication protocol starts when the host pulls the bus low for reset time. All devices on
the bus are to respond with a presence pulse, which is active low. The host can then transmit the ROM Function
command, which is used to address the devices on the bus. The ROM functions include Match ID, Skip ID, Read
ID, and Search ID.
Match ID
Skip ID
Read ID
Search ID
The host transmits the 64-bit ID of the 1-wire based device to communicate.
No ID is necessary for communication. Used only if one device is connected to the host.
The 1-wire slave transmits its 64 bit address. This command is only useful if there is only one
device connected to the host.
Useful if there are multiple devices on the bus. This command initiates a communication with a
single device, but it is more useful in allowing the host to determine the address of every device
on the bus. The Match ID can then be used to communicate with a specific addressed device.
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