Sim2 M80 Specifiche Scaricare il pdf (Pagina 63)

M80 Hardware Design

M80_HD_V1.0 - 63 -

SIM_CLK

SIM Card Clock

SIM_PRESENCE

SIM Card Presence Detection

GND

Ground

VPP

Not Connect

SIM_DATA

SIM Card Data I/O

SIM_DETECT

Pulled down GND with external circuit. When the tray is

present, C4 is connected to C8.

3.12. Camera interface

Not supported at present.

3.13. SD card interface

Not supported at present.

3.14. PCM interface

Not supported at present.

3.15. USB interface

M80 provides USB interface which complies with USB 1.1 FS/LS specification. It supports

12Mbps in full speed mode. It cannot act as a host device.

Table 18: USB interface characteristics

USB interface only supports downloading software and should cooperate with DOWNLOAD pin.

Name

Function

USB_DM

USB data negative

USB_DP

USB data positive

Quectel

Confidential

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Sim2 M80 Specifiche Pagina 63