Application Interface Specifications; Power Interface; Pmic Gpio And Mpp Interface - SimCom SIMT 1502 Manual

SHANGHAI SIMCOM LIMITED

4 Application Interface Specifications

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4.1 Power interface

The power supply of SIMT1502 comes from PM8909. See Table4-1
Table4-1 Power source description
Signal
VREG_L11_2P95V
VREG_L12_2P95V
VREG_L17_2P85V
VREG_L6_1P8V
Signal
VBAT_SNS
VBAT/VPH
VBAT/VPH
VBAT means battery, VPH means SYS Power. If you use the SIMT1502's internal charging
management, they are the same function and they must be connected together. If you use external
charging management, PIN88 is Battery only and PIN92/124 is VPH only. You can see it in
SIMT1502_HW_compatibility design of the modification.pdf

4.2 PMIC GPIO and MPP interface

SIMT1502 have two PMIC GPIO interface and one PMIC Multipurpose interface.See Table4-2.
Table4-2 PMIC GPIO and MPP interface description
GPIO/MPP
PMU_GPIO01
PMU_GPIO02
PMU_MPP_2_PWM
Two GPIOs are available. Some likely GPIO applications, which are described elsewhere: clock
outputs; external current driver control; external LDO, SMPS, or power gate controls; status bit;
XO controller input; and level translator.
One MPP are available. MPP can be configured as PWM, and MPP can be configured as analog
output buffers.
Direction
Pin#
PI/PO Min
61 PO 1.75
85 PO 1.75
107 PO 1.75
109 PO 1.75
Direction
Pin#
PI/PO
88 PI Battery SNS
92 PI/PO SYS Power
124 PI/PO SYS Power
Pin#
81 RFCLK1_EN
83 RFCLK2_EN
79 PWM output
Voltage(V) Current(mA)
Typ Max
2.95 3.337
1.8/2.95 3.337
2.85 3.337
1.8 3.337
Functions
document.
Functions
Max
600
50
420
200
20