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LTC2933CGN#TRPBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P34
LTC2933
16
2933fa
For more information www.linear.com/LTC2933
operaTion
GPIO2_3_CONFIG (Command Byte 0x03)
The GPIO2_3_CONFIG command configures GPIO2 and
GPIO3 mapping, delay-on-release time, output type, and
polarity. If GPIO2_TYPE_AND_POLARITY is configured as
ALERT (100b or 111b), or GPIO3_TYPE_AND_POLARITY is
configured as ALERT (100b or
111b), the output is latched,
GPIO2_3_CONFIG Data Contents
BIT(S) SYMBOL OPERATION
b[15] MAP_GPIO3_TO_GPIO2 0: GPIO3 is not mapped into GPIO2.
1: GPIO3 is mapped into GPIO2.
Factory default 0.
b[14]
MAP_GPIO3_TO_GPIO1 0: GPIO3 is not mapped into GPIO1.
1: GPIO3 is mapped into GPIO1.
Factory default 0.
b[13:11]
GPIO3_DELAY_ON_RELEASE 000b: Delay selected is 0.
001b: Delay selected is 1.6ms.
010b: Delay selected is 6.4ms.
011b: Delay selected is 26ms.
100b: Delay selected is 51ms.
101b: Delay selected is 205ms.
110b: Delay selected is 410ms.
111b: Delay selected is 1.64s.
Factory default 101b (205ms).
b
[10:8]
GPIO3_TYPE_AND_POLARITY 000b: Active H input.
001b: Active L input.
010b: Active H open-drain output.
011b: Active L open-drain output.
100b: Active L open-drain ALERT output.
101b: Active H, weak pull-up output.
110b: Active L, weak pull-up output.
111b: Active L, weak pull-up ALERT output.
Factory default 011b (Active L open-drain output).
b
[7]
MAP_GPIO2_TO_GPIO3 0: GPIO2 is not mapped into GPIO3.
1: GPIO2 is mapped into GPIO3.
Factory default 0.
b[6]
MAP_GPIO2_TO_GPIO1 0: GPIO2 is not mapped into GPIO1.
1: GPIO2 is mapped into GPIO1.
Factory default 0.
b[5:3]
GPIO2_DELAY_ON_RELEASE 000b: Delay selected is 0.
001b: Delay selected is 1.6ms.
010b: Delay selected is 6.4ms.
011b: Delay selected is 26ms.
100b: Delay selected is 51ms.
101b: Delay selected is 205ms.
110b: Delay selected is 410ms.
111b: Delay selected is 1.64s.
Factory default 101b (205ms).
b
[2:0]
GPIO2_TYPE_AND_POLARITY 000b: Active H input.
001b: Active L input.
010b: Active H open-drain output.
011b: Active L open-drain output.
100b: Active L open-drain ALERT output.
101b: Active H, weak pull-up output.
110b: Active L, weak pull-up output.
111b: Active L, weak pull-up ALERT output.
Factory default 011b (Active L open-drain output).
and is cleared after the LTC2933 acknowledges the alert
response address (see SMBus protocol), HISTORY_WORD
is read, or a CLEAR_HISTORY command is received.
Only one GPIO
n
pin should be configured as ALERT.
GPIO
n
_DELAY_ON_RELEASE does not apply to a GPIO
n
pin configured as ALERT.
LTC2933
17
2933fa
For more information www.linear.com/LTC2933
V1_THR (Command Byte 0x04), V2_THR (0x05),
V3_THR (0x06), V4_THR (0x07),V5_THR (0x08),
V6_THR (0x09)
The V
n
_THR command allows the user to specify the high
and low threshold monitoring voltages on each channel.
V
n
_THR Data Contents Channels V1 to V6
BIT(S) SYMBOL OPERATION
b[15:8] V
n
_THR_HI The COMPn_HI threshold. See the Applications Information section. Factory default settings of 0xDE, 0xE9, 0x8B, 0xE9,
0x9B, 0x7A correspond to 13.35V, 5.56V, 3.68V, 2.78V, 2.00V and 1.67V for channels V1 to V6, respectively.
b[7:0] V
n
_THR_LO The COMPn_LO threshold. See the Applications Information section. Factory default settings of 0xA8, 0xB1, 0x65, 0xB1,
0x73, 0x58 correspond to 10.65V, 4.44V, 2.92V, 2.22V, 1.60V and 1.33V for channels V1 to V6, respectively.
V1_CONFIG (Command Byte 0x0A), V2_CONFIG (0x0B),
V3_CONFIG (0x0C), V4_CONFIG (0x0D),
V5_CONFIG (0x0E), V6_CONFIG (0x0F)
The V
n
_CONFIG command programs V1 through V6
comparator range, polarity and mapping to GPIOn.
operaTion
V
n
_CONFIG Data Contents Channel V1 to V6
BIT(S) SYMBOL OPERATION
b[15:10] Reserved Ignore
b[9:8] V
n
_RANGE Channel V1:
00b: High Range.
01b: Medium Range.
10b and 11b: Reserved.
Factory default 00b.
Channels V2, V3, V4, V5 and V6:
00b: Medium Range.
01b: Low Range.
10b and 11b: Precision Range.
Factor
y defaults are 00b on V2 to V3 and 01b on V4, V5 and V6.
b[7]
V
n
_POL_HI Controls polarity of COMPn_HI output reported by STATUS_WORD. See STATUS_WORD
description for details.
0: Undervoltage. Indicates a fault when the input voltage is below V
n
_THR_HI.
1: Overvoltage. Indicates a fault when the input voltage is above V
n
_THR_HI.
Factory default 1.
b[6]
V
n
_POL_LO Controls polarity of COMPn_LO output reported by STATUS_WORD. See STATUS_WORD
description for details.
0: Undervoltage. Indicates a fault when the input voltage is below V
n
_THR_LO.
1: Overvoltage. Indicates a fault when the input voltage is above V
n
_THR_LO.
Factory default 0.
b[5]
MAP_COMP
n
_HI_TO_GPIO3 0: High comparator not mapped to GPIO3.
1: High comparator mapped to GPIO3.
Factory default 0.
b[4]
MAP_COMP
n
_HI_TO_GPIO2 0: High comparator not mapped to GPIO2.
1: High comparator mapped to GPIO2.
Factory default 0.
b[3]
MAP_COMP
n
_HI_TO_GPIO1 0: High comparator not mapped to GPIO1.
1: High comparator mapped to GPIO1.
Factory default 1.
LTC2933
18
2933fa
For more information www.linear.com/LTC2933
operaTion
HISTORY_WORD (Command Byte 0x11)
The HISTORY_WORD command returns two bytes of
information with a summary of the faults since power was
applied or HISTORY_WORD was last cleared. HISTORY_
WORD is located in volatile memory and is automatically
updated each time a fault occurs. HISTORY_WORD is
cleared using the CLEAR_HISTORY command.
CLEAR_HISTORY (Command Byte 0x1B)
The CLEAR_HISTORY command clears all the faults logged
in the volatile HISTORY_WORD register. A manual reset
performs the same operation if GPI
n
_MR_RESPONSE = 1.
Clearing HISTORY_WORD does not affect the
STATUS_
WORD content. Processing of the CLEAR_HISTORY
command typically takes less than 10ms, and the part will
not acknowledge other I
2
C operations during that time.
HISTORY_WORD Data Contents
BIT(S) SYMBOL OPERATION
b[15:13] Reserved Ignore
b[12] V6_HI_LATCHED_FAULT 1: Latched V6_HI_FAULT.
0: No fault.
b[11]
V6_LO_LATCHED_FAULT 1: Latched V6_LO_FAULT.
0: No fault.
b[10]
V5_HI_LATCHED_FAULT 1: Latched V5_HI_FAULT.
0: No fault.
b[9]
V5_LO_LATCHED_FAULT 1: Latched V5_LO_FAULT.
0: No fault.
b[8]
V4_HI_LATCHED_FAULT 1: Latched V4_HI_FAULT.
0: No fault.
b[7]
V4_LO_LATCHED_FAULT 1: Latched V4_LO_FAULT.
0: No fault.
b[6]
V3_HI_LATCHED_FAULT 1: Latched V3_HI_FAULT.
0: No fault.
b[5]
V3_LO_LATCHED_FAULT 1: Latched V3_LO_FAULT.
0: No fault.
b[4]
V2_HI_LATCHED_FAULT 1: Latched V2_HI_FAULT.
0: No fault.
b[3]
V2_LO_LATCHED_FAULT 1: Latched V2_LO_FAULT.
0: No fault.
b[2]
V1_HI_LATCHED_FAULT 1: Latched V1_HI_FAULT.
0: No fault.
b[1]
V1_LO_LATCHED_FAULT 1: Latched V1_LO_FAULT.
0: No fault.
b[0]
Reserved Ignore
V
n
_CONFIG Data Contents Channel V1 to V6
BIT(S) SYMBOL OPERATION
b[2] MAP_COMP
n
_LO_TO_GPIO3 0: Low comparator not mapped to GPIO3.
1: Low comparator mapped to GPIO3.
Factory default 0.
b[1]
MAP_COMP
n
_LO_TO_GPIO2 0: Low comparator not mapped to GPIO2.
1: Low comparator mapped to GPIO2.
Factory default 0.
b[0]
MAP_COMP
n
_LO_TO_GPIO1 0: Low comparator not mapped to GPIO1.
1: Low comparator mapped to GPIO1.
Factory default 1.
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P34

LTC2933CGN#TRPBF

Mfr. #:
Buy LTC2933CGN#TRPBF
Manufacturer:
Analog Devices Inc.
Description:
Supervisory Circuits Programmable Hex Voltage Supervisor (w/ High Voltage Input)
Lifecycle:
New from this manufacturer.
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