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LTC2936CUFD#TRPBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30
LTC2936
13
2936fa
For more information www.linear.com/LTC2936
operaTion
GPI_CONFIG (Command Byte 0x01)
The GPI_CONFIG command configures internal response
to a manual reset, sets each GPI function, and option-
ally maps GPI pins configured as Manual Reset (MR) or
Auxiliary Comparator (AUXC) to one or more GPIO pins.
GPI_CONFIG Data Contents
BIT(S) SYMBOL OPERATION
b[15] Reserved Ignore
b[14] GPI2_MR_RESPONSE Effective only if the input GPI2 is MR configured.
0: Disable CLEAR_HISTORY response.
1: Enable CLEAR_HISTORY response on falling edge of GPI2.
Factory default 0.
b
[13:11]
GPI2_CONFIG 000b: Manual Reset (MR) active low, 15µA pull-up.
001b: Reserved.
010b: Margin (MARG) active low, 15µA pull-up. Overvoltage and undervoltage faults are inhibited.
011b: UV Disable (UVDIS) active low, 15µA pull-up. Undervoltage faults are inhibited.
100b: Write Protect (WP).
101b: Auxiliary Comparator (AUXC) positive input on GPI2.
110b: and 111b: Auxiliary Comparator (AUXC) negative input on GPI2.
Factory default 010b.
b
[10]
MAP_GPI2_TO_GPIO3 0: GPI2 input is not mapped to GPIO3.
1: GPI2 input is mapped to GPIO3 if configured as MR or AUXC.
Factory default 0.
b[9]
MAP_GPI2_TO_GPIO2 0: GPI2 input is not mapped to GPIO2.
1: GPI2 input is mapped to GPIO2 if configured as MR or AUXC.
Factory default 0.
b[8]
MAP_GPI2_TO_GPIO1 0: GPI2 input is not mapped to GPIO1.
1: GPI2 input is mapped to GPIO1 if configured as MR or AUXC.
Factory default 0.
b[7]
Reserved Ignore
b[6] GPI1_MR_RESPONSE Effective only if the input GPI1 is MR configured.
0: Disable CLEAR_HISTORY response.
1: Enable CLEAR_HISTORY response on falling edge of GPI1.
Factory default 0.
b[5:3]
GPI1_CONFIG 000b: Manual Reset (MR) active low, 15µA pull-up.
001b: Reserved.
010b: Margin (MARG) active low, 15µA pull-up. Overvoltage and undervoltage faults are inhibited.
011b: UV Disable (UVDIS) active low, 15µA pull-up. Undervoltage faults are inhibited.
100b: Write Protect (WP).
101b: Auxiliary Comparator (AUXC) positive input on GPI1.
110b: and 111b: Auxiliary Comparator (AUXC) negative input on GPI1.
Factory default 000b.
b
[2]
MAP_GPI1_TO_GPIO3 0: GPI1 input is not mapped to GPIO3.
1: GPI1 input is mapped to GPIO3 if configured as MR or AUXC.
Factory default 0.
b[1]
MAP_GPI1_TO_GPIO2 0: GPI1 input is not mapped to GPIO2.
1: GPI1 input is mapped to GPIO2 if configured as MR or AUXC.
Factory default 0.
b[0]
MAP_GPI1_TO_GPIO1 0: GPI1 input is not mapped to GPIO1.
1: GPI1 input is mapped to GPIO1 if configured as MR or AUXC.
Factory default 0.
LTC2936
14
2936fa
For more information www.linear.com/LTC2936
operaTion
GPIO1_CONFIG (Command Byte 0x02)
The GPIO1_CONFIG command configures the GPIO1
mapping, delay-on-release time, output type, and polarity.
If GPIO1_TYPE_AND_POLARITY is configured as ALERT
(100b or 111b), the output is latched and cleared after the
LTC2936 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.
WD_GPIO1_CONFIG Data Contents
BIT(S) SYMBOL OPERATION
b[15:8] Reserved Ignore
b[7]
MAP_GPIO1_TO_GPIO3
0: GPIO1 input is not mapped to GPIO3.
1: GPIO1 input is mapped to GPIO3.
Factory default 0.
b[6]
MAP_GPIO1_TO_GPIO2
0: GPIO1 input is not mapped to GPIO2.
1: GPIO1 input is mapped to GPIO2.
Factor
y default 0.
b[5:3]
GPIO1_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]
GPIO1_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).
LTC2936
15
2936fa
For more information www.linear.com/LTC2936
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,
and is cleared after the LTC2936 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.
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).
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30

LTC2936CUFD#TRPBF

Mfr. #:
Buy LTC2936CUFD#TRPBF
Manufacturer:
Analog Devices Inc.
Description:
Supervisory Circuits Programmable Hex Voltage Supervisor (w/ Comparator Outputs)
Lifecycle:
New from this manufacturer.
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