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Thundercomm
TurboX D845 System on Module
Copyright © 2018 All Rights Reserved , Thundercomm Technology Co., Ltd.
15
3 Interfaces Description
This chapter introduces all the interfaces definition, purpose to guide developer easy to design and
verification on Thundercomm TurboX
TM
D845 SOM.
3.1 Interfaces Parameter Definitions
Symbol
Description
AI
Analog input
AO
Analog output
B
Bidirectional digital with CMOS input
CSI
Supply voltage for MIPI_CSI circuits and I/O; (1.8 V only)
DI
Digital input(CMOS)
DSI
Supply voltage for MIPI_DSI I/O; (1.8 V only)
DO
Digital output(CMOS)
H
High-voltage tolerant
nppdpukp
Programmable pull resistor. The default pull direction is indicated using capital letters
and is a prefix to other programmable options:
NP: pdpukp = default no-pull with programmable options following the colon (:)
PD: nppukp = default pull-down with programmable options following the colon (:)
PU: nppdkp = default pull-up with programmable options following the colon (:)
KP: nppdpu = default keeper with programmable options following the colon (:)
KP
Contains an internal weak keeper device (keepers cannot drive external buses)
MIPI
Mobile industry processor interface
NP
Contains no internal pull
OD
Open drain
PD
Contains an internal pull-down device
PI
Power input
PO
Power output