SHANGHAI SIMCOM LIMITED
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4.3 USB interface
SIMT1502 contains a USB interface which support On-The-Go. It is compliant with the USB2.0
specification. The USB2.0 specification requires hosts to support all three USB speeds, low-speed
(1.5Mbps), full-speed (12Mbps) and high-speed (480Mbps).
See
Table4-3
and
Figure4-1
for more details.
Table4-3 USB interface description
Signal
Pin#
Description
Direction
USB_DM
44
USB 2.0 serial data minus
AI
/A
O
USB_DP
45
USB 2.0 serial data plus
AI
/A
O
USB_HS_ID
78
USB OTG ID
AI
VBUS_USBIN
87
USB_IN
POWER
Figure4-1 USB application diagram
4.4 Audio interface
Codec integrated within PMU
No SLIMBUS
No digital mic support
Audio inputs: Up to three analog microphones, with integrated mic bias;
Audio output :
Headphones with headset detection;
Differential earpiece;
Differential loud
speaker driver;
Single-ended line output
See
Table4-4
and
Figure4-2
for more details.
Summary of Contents for SIMT 1502
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