Getac Technology Corporation ZX70U Manuale Utente

AS3993 – AN13 – Received Signal Strength Indicator (RSSI)

www.ams.com

Revision 2.0 / 6/22/12

page 6/17

Figure 2 - Controller Part

1. MCU C8051F340 (Silabs)

2. USB connector

3. Interface connectors to reader PCB

4. UART connector

5. C2 programming interface for boot loader

6. Indicator LED

7. X-tal (for extended USB functionality)

LDO (5 V → 3.5 V)