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5.3 Power jumpers of Regulators
All of the voltage regulators (switching and linear) are powered from the main 12 V supply line by a jumper with the
exception of the 3.3 V and 1.8 V linear regulator which has a two way jumper to allow selection of the input voltage. The
table below details the jumper configurations for the linear 1.25 V regulator source voltage. By default, the regulator is
powered from a 12 V supply line.
Table 3. Regulators power jumpers
BOARD
REFERENCE
POSITION
PCB
LEGEND
DESCRIPTION
MAC57D5MB
J32
1-2 (Default)
-
PMIC - switching regulators [5 V, 3.3 V and
1.25 V] are powered from VBAT [12 V].
REMOVED
-
PMIC - switching regulators [5 V, 3.3 V and
1.25 V] are not powered.
J35
1-2 (Default)
-
5.0 V switching regulator output is enabled
2-3
-
5.0 V switching regulator output is disabled
REMOVED
-
5.0 V switching regulator output is disabled
J36
1-2 (Default)
-
3.3 V switching regulator output is enabled
2-3
-
3.3 V switching regulator output is disabled
REMOVED
-
3.3 V switching regulator output is disabled
J37
1-2 (Default)
-
1.25 V switching regulator output is manually
enabled
2-3
-
1.25 V switching regulator output is disabled
REMOVED
-
1.25 V switching regulator output is controlled
by the MCU
J30
1-2 (Default)
-
5.0 V switching regulator output is routed to
all peripherals on the EVB.
REMOVED
-
5.0 V switching regulator output is
disconnected from all peripherals on the
EVB. (Disabled)
J26
1-2 (Default)
-
3.3 V switching regulator output is routed to
all peripherals on the EVB.
REMOVED
-
3.3 V switching regulator output is
disconnected from all peripherals on the
EVB. (Disabled)
J33
1-2 (Default)
-
1.25 V switching regulator output is routed to
all peripherals on the EVB.
REMOVED
-
1.25 V switching regulator output is
disconnected from all peripherals on the
EVB. (Disabled)
5.4 Power status LED’s and Fuse
Initial configuration
MAC57D5xx Customer Evaluation Boards, Rev. 0, 05/2016
6
Freescale Semiconductor, Inc.