ltc2978 Linear Technology Corporation, ltc2978 Datasheet - Page 36

• Manufacturer Part Number: ltc2978
• Description: Octal Pmbus Power Supply Monitor And Controller With Eeprom
• Manufacturer: Linear Technology Corporation

MFR_CONFIG_ALL:
This command is used to configure parameters that are
common to all channels on the IC. They may be set or
reviewed from any PAGE setting.
MFR_CONFIG_ALL Data Contents
LTC2978
operaTion

BIT(S) SYMBOL
b[7]
b[6]
b[5]
b[4]
Mfr_config_fault_log_enable
Mfr_vin_on_clr_faults_en
Mfr_config_control1_pol
Mfr_config_control0_pol
OPERATION
Enable fault logging to NVM in
response to Fault.
0: Fault logging to NVM is
disabled
1: Fault logging to NVM is
enabled
VIN_ON rising edge to clear all
latched faults
0: VIN_ON clear faults feature is
disabled
1: VIN_ON clear faults feature is
enabled
Selects active polarity of
control1 pin.
0: Active low (pull pin low to
start unit)
1: Active high (pull pin high to
start unit)
Selects active polarity of
control0 pin.
0: Active low (pull pin low to
start unit)
1: Active high (pull pin high to
start unit)
MFR_CONFIG_ALL Data Contents
b[3]
b[2]
b[1]
b[0]
Mfr_config_vin_share_enable Allow this unit to hold share-
Mfr_config_all_pec_en
Mfr_config_all_longer_
pmbus_timeout
Mfr_config_all_vinen_wpu_
dis
clock pin low when VIN_ON
has fallen below VIN_OFF . When
enabled, this unit will also turn
all channels off in response to
share-clock being held low.
0: Share-clock inhibit is disabled
1: Share-clock inhibit is enabled
PMBus packet error checking
enable.
0: PEC is accepted but not
required
1: PEC is required
Increase PMBus timeout internal
by a factor of 8.
0: PMBus timeout is not
multiplied by a factor of 8
1: PMBus timeout is multiplied
by a factor of 8
V
limited pull-up disable.
0: Use weak current-limited pull-
up on V
long as no faults have forced
V
1: Disable weak pull-up. V
driver is three-stated after
power-up as long as no faults
have forced V
IN_EN
IN_EN
charge pumped, current-
off.
IN_EN
after power-up, as
IN_EN
off.
IN_EN
2978fa