BQ76PL455A-Q1 Datasheet, PDF (73/130 Pages) Texas Instruments – 16-Cell EV/HEV Integrated Battery Monitor and Protector

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BIT
NAME
[4:3]
CMD_OVS_GPER
[2:0]
CMD_OVSMP
bq76PL455A-Q1
SLUSC51B – APRIL 2015 – REVISED DECEMBER 2015
DESCRIPTION
CMD_OVS_GPER sets the averaging period for:
• Internal temperature measurement of the digital die. Note that
although CMD_OVS_GPER bits set the timing for the internal
temperature measurement of the digital die, averaging is not used
for this measurement.
• VDD18
When CMD_OVS_CYCLE = 0, this value also sets the period for the averaging on all
the auxiliary channels.
=0
4.13 µs
=1
5.96 µs
=2
8.02 µs
=3
12.6 µs: This setting is recommended for best accuracy in most
designs. See the Application and Implementation section for detailed
information on using other settings.
These bits set the number of times each ADC converted value will be averaged before
being stored. Each converted signal will be sampled the requested number of times,
averaged, and the results convergent rounded to 16 bits.
=0
=1
=2
=3
=4
=5
= 6–7
Single sample (no averaging)
2 samples are averaged.
4 samples are averaged.
8 samples are averaged.
16 samples are averaged.
32 samples are averaged.
Reserved, do not use this value.
7.6.3.5 ADDR 0x0A (10) Device Address
BIT
NAME
[7:5] RSVD
[4:0] DEV_ADDR
DESCRIPTION
Reserved — always write as zero.
These bits set the device address that the device will respond. These bits can only be written when
AUTO_ADDRESS is set to 1. Otherwise, writes to these bits are ignored. The address may also be stored
and loaded from EEPROM or using GPIO bits. See text for details.
7.6.3.6 GROUP_ID 0x0B (11) Group ID
BIT
NAME
[7:4] RSVD
[3:0] GROUP_ID
DESCRIPTION
Reserved — always write as zero.
These bits set the lower 4 bits of the group identifier that the device will respond to for Group Broadcast
requests. The upper 4 bits of the group identifier are fixed at 0 and cannot be changed.
7.6.3.7 DEV_CTRL 0x0C (12) Device Control
BIT
NAME
[7] SOFT_RESET
[6] PWRDN
[5] STACK_WAKE
DESCRIPTION
Writing a '1' will return the device to its reset state, causing it to rerun its initialization sequence. This bit is
self-clearing and will always return '0' when read.
Writing a '1' will cause the device to shut down. This is usually broadcast to the entire stack of ICs to shut
down all of the bq76PL455A-Q1 devices at the same time.
Writing a '1' will cause a wakeup tone to be sent from the high-side communication interface to the next
device up the stack.
Note that setting this bit blocks communication to devices higher in the stack until the wakeup tone
sequence is complete. The time it takes to complete the stack wake sequence is dependent on the state
and number of devices in the stack.
This bit is self-clearing and will return '1' while a wakeup tone is in process, and '0' after it has completed.
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