SCM SCL3711, Справочное руководство

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SCL3711 R
EFERENCE
M
ANUAL
17
4. SCL3711 characteristics
4.1. SCL3711 high level architecture
4.1.1. Block diagram
The link between SCL3711 and the host to which it is connected is the USB interface providing
both the power and the communication channel.
SCL3711 is based designed around an NFC controller which handles the USB communication
to the host and the RF communication. This controller ensures the coding/decoding/framing
modulation/demodulation required for the RF communication.
The matching circuitry provides the transmission and receiver paths adaptation for the antenna
to function properly.
4.1.2. Software architecture
Applications can interface with the driver
directly through the PC/SC interface or
through the SCM proprietary interface to the
NFC wrapper.
The NFC wrapper simplifies the usage of
the different NFC Forum tags with the
SCL3711 and other SCM contactless
readers. It provides a unique API to
application developers, which enables them
to read and modify NDEF records without
further
knowledge of the underlying
hardware and protocols. Detailed
information about the NFC wrapper can be
found in SCM’s Contactless SDK.
The SCL3711 driver implements PC/SC v2.0 API towards upper layers.
Application
SCM’s NFC
wrapper
Driver
Firmware
SCM API (for P2P and
extra services)
PC/SC v2.0 API (ADPU
from ISO/IEC 7816-4
and SCM defined)