Users Manual
Table Of Contents
- 2Functional Overview
- 3Interfaces Description
- 3.1Interfaces Parameter Definitions
- 3.2Interfaces Detail Description
- 3.2.1Power Supply Interface
- 3.2.2Touchscreen Interface
- 3.2.3Display Interface
- 3.2.4Camera Interfaces
- 3.2.5Audio Interface
- 3.2.6USB & DisplayPort Interface
- 3.2.7 PCIe Interface
- 3.2.8 SSC Interface
- 3.2.9 SDIO Interface
- 3.2.10 QUP Interface
- 3.2.11Power on Interface
- 3.2.12Reset Interface
- 3.2.13 Keys Interface
- 3.2.14 Sensor Interrupt Interface
- 3.2.15Debug UART Interface
- 3.2.16Battery Interface
- 3.2.17ADCs Interface
- 3.2.18 PWMs and LED Current Driver Interface
- 3.2.19Antenna Interface
- 4Connector PIN Summary
- 5Electrical Characteristics
Thundercomm TurboX D845 System on Module
Copyright © 2018 All Rights Reserved , Thundercomm Technology Co., Ltd.
39
Parameter Description Min Max Units
VIH
High-level input voltage,
CMOS/Schmitt,
0.7 x VDDPX_3 VDDPX_3+0.3 V
VIL
Low-level input voltage,
CMOS/Schmitt,
-0.3 0.3 x VDDPX_3 V
VSHYS Schmitt hysteresis voltage 300 - mV
VOH High-level output voltage, CMOS VDDPX_3 - 0.45 VDDPX_3 V
VOL Low-level output voltage, CMOS 0.0 0.45 V
RPULL-UP Pull-up resistance 20 K 60 K Ω
RPULL-DOWN Pull-down resistance 60 K 20 K Ω
Table 5.4- 1 Digital IO voltage performance
5.3.2 SD card digital I/O characteristics
The SD card is powered by P2 supply; the power is 1.8V and 2.96V.the following table shows the SD card
digital I/O characteristics:
Parameter Description Min Typical Max Units
VIH High-level input voltage
1.27/0.625 x
VDDPX_2
-
2/VDDPX_2 +
0.3
V
VIL Low-level input voltage -0.3/-0.3 -
0.58/0.25 x
VDDPX_2
V
VHYS Schmitt hysteresis voltage 100 - - mV
RPULL-UP Pull-up resistance 10 K - 100K Ω
RPULL-DOWN Pull-down resistance 10 K - 100K Ω
RKEEPER-UP Keeper-up resistance 10 K - 100K Ω
RKEEPER-DOWN Keeper-down resistance 10 K - 100K Ω
VOH High-level output voltage
1.4/0.75 x
VDDPX_2
- -/VDDPX_2 V
VOL Low-level output voltage 0/0 -
0.45/0.125 x
VDDPX_2
V
Table 5.4- 2 SD digital IO voltage performance (1.8V/2.96V)