User's Manual
Table Of Contents
- RF Exposure Statement:
- General Notes
- Copyright
- Contents
- Table Index
- Figure Index
- Revision History
- 1Introduction
- 2Package Information
- 3Interface Application
- 3.1Power Supply
- Figure 5: VBAT voltage drop during burst emission
- 3.1.1Power Supply Design Guide
- Figure 6: Power supply application circuit
- Table 7: Recommended Zener diode list
- 3.1.2Recommended Power Supply Circuit
- Figure 7: Linear regulator reference circuit
- Figure 8: Switching mode power supply reference ci
- 3.1.3Voltage Monitor
- 3.2Power on/Power off/Reset Function
- 3.3UART Interface
- 3.4USB Interface
- 3.5USIM Interface
- 3.6PCM Interface
- 3.7SD Interface
- 3.8I2C Interface
- 3.9SDIO Interface
- 3.10SPI Interface
- 3.11Network status
- 3.12Flight Mode Control
- Switch
- 3.1Power Supply
- 4RF Specifications
- 5Electrical Specifications
- 6SMT Production Guide
- 7Packaging
- Appendix
SIM7600SA-H_User Manual_V1.00
2017-10-11
Smart Machine Smart Decision
3.6.2 PCM Application Guide
The following figure shows the external codec reference design.
VDDA
VDDSPK
VDDD
ADCOUT
MICBIAS
DACIN
FS
MIC+
BCLK
MIC-
MCLK
MOUT
SCLK
SDIO
NAU8810
MODULE
PCM_OUT
PCM_SYNC
PCM_CLK
SCL
SDA
VDD_1V8
3.3V 3.8V VDD_1V8
2.2K
2.2K
PCM_IN
1.3K
1uF
1uF
MIC
1.3K
47uF
47uF
SPK
33pF
Figure 24: Audio codec reference circuit
3.7 SD Interface
SIM7600SA-H provides a 4-bit SD/MMC interface with clock rate up to 200 MHz, The voltage of
MMC/SD interface is 2.95V, which is compatible with SDIO Card Specification (version 3.0) and
Secure Digital (Physical Layer Specification, version 3.0).It supports up to 32GB SD cards.
Table 16: MMC/SD electronic characteristic (SD_DATA0-SD_DATA3 , SD_CLK and
SD_CMD) *
Symbol
Parameter
Min.
Typ.
Max.
Unit
VDD_SD
LDO power output
voltage**
2.75
2.85
3.05
V
V
IH
High-level input voltage
0.65·VDD_EXT
-
VDD_EXT+0.3
V
V
IL
Low-level input voltage
-0.3
0
0.25·VDD_EXT
V
V
OH
High-level output voltage
VDD_EXT-0.4
2.85
VDD_EXT
V
V
OL
Low-level output voltage
0
0
0.45
V
Note:
*Be different from SD_DATA0-SD_DATA3
,
SD_CLK and SD_CMD
,
SD_DET is 1.8V
operation voltage.
Customer should provide VDD_SD for SD card and the current should more than 350mA.
ESD/EMI components should be arranged beside SD card socket. Refer to the following
application circuit.