INTERFACE DEVICE PROVIDING INTRINSIC SAFETY FOR A COMMUNICATIONS DEVICE

INTERFACE DEVICE PROVIDING INTRINSIC SAFETY FOR A COMMUNICATIONS DEVICE

An interface device for providing Intrinsic Safety to a Smart Identity Module (SIM) card includes a buffer circuit including a voltage regulator and a voltage level translator including drivers. Baseband processor side pins include at least an input/output (IO) pin for receiving data signals, first...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: MEIJER BART, SHRIMANKAR TUSHAR N NISITH, BOETTGER JOHN, BEZAWADA MURALI KRISHNA
Format: Patent
Sprache:eng
Schlagworte:
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TELEPHONIC COMMUNICATION
TRANSMISSION
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Beschreibung
Zusammenfassung:An interface device for providing Intrinsic Safety to a Smart Identity Module (SIM) card includes a buffer circuit including a voltage regulator and a voltage level translator including drivers. Baseband processor side pins include at least an input/output (IO) pin for receiving data signals, first SIM reset (RST) pin, core power supply (VCC) pin, a clock (CLK) pin, a battery power supply (VBAT) pin, and SIM side pins include at least a VCC pin, a SIM CLK pin, second SIM RST pin, and a SIM IO pin. There is at least one series resistor (R1, R2, R3, R4 and R5) in series with each of the baseband processor side pins.