LTC6802IG-2 LINER [Linear Technology], LTC6802IG-2 Datasheet - Page 17

• Manufacturer Part Number: LTC6802IG-2
• Description: Multicell Addressable Battery Stack Monitor
• Manufacturer: LINER [Linear Technology]

applicaTions inForMaTion
With broadcast commands all devices can be sent com-
mands simultaneously. This is useful for A/D conversion
and polling commands. It can also be used with write
commands when all parts are being written with the same
data. Broadcast read commands should not be used in
the parallel configuration.
Address Commands: An address command is one in
which only the addressed device on the bus responds.
The first byte of an address command consists of 4 bits
with a value of 1000 and 4 address bits. The second byte
is the command byte. See the Bus Protocols and Com-
mands section.
CSBI
SCKI
CSBI
SCKI
SDO
SDO
SDI
SDI
MSB (CMD)
MSB (CMD)
BIT6 (CMD)
BIT6 (CMD)
Figure 7. Transmission Format (Read)
Figure 8. Transmission Format (Poll)
LSB (CMD)
LSB (CMD)
PEC Byte: The packet error code (PEC) byte is a CRC
value calculated for all of the bits in a register group in
the order they are read, using the following characteristic
polynomial:
On a read command, after sending the last byte of a reg-
ister group, the device will shift out the calculated PEC,
MSB first.
Toggle Polling: Toggle polling allows a robust determina-
tion both of device states and of the integrity of the con-
nections between the devices in a stack. Toggle polling
x
8
+ x
2
POLL STATE
+ x + 1
MSB (DATA)
LSB (DATA)
LTC6802-2
68022 F07
68022 F08

68022fa