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S1M8660AX01-F0T0 Datasheet(PDF) 5 Page - Samsung semiconductor |
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S1M8660AX01-F0T0 Datasheet(HTML) 5 Page - Samsung semiconductor |
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5 / 32 page  RX IF/BBA WITH GPS S1M8660A (Preliminary) 5 PIN DESCRIPTION (Continued) Pin No Symbol I/O Description 32 SLEEPB/CLK DI When SEN is high, this pin inputs the clock with the permit of the 3- line serial control input. When SEN is low, parallel control input is allowed and this pin performs SLEEPB. If this pin is opened, it remains at Low. 36 TCXO AI Reference frequency input terminal connected to the VCTCXO output. When this pin stops, only DC bias is delivered to maintain the DC charge value of the capacitor connected externally. 37 TCXO/N DO Division output of the TCXO Reference frequency input. 3-different division ratio and 2- output drive capacities can be selected through the SPI bus control. Default : 4.92MHz, Weak OUT *division ratio : 1, 1/4, 1/16 38 CHIPx8 BI CHIPx8 CLOCK output terminal. It has a division ratio of 512/1025 for the TCXO reference frequency. Therefore, it cannot have a perfect 50% duty. When this terminal is not used (CDMA SLEEP, FM IDLE), it remains at Low. This pin can be used exclusively for the externally generated CHIPx8 CLOCK input using the SPI BUS control. 39 40 41 42 45 46 47 48 RXQD3 RXQD2 RXQD1 RXQD0 RXID3 RXID2 RXID1/FMRID RXID0/FMRQD DO CDMA A-D Converter's digital outputs, which are connected to the modem data input pins. These data are synchronized at CHIP ×8's rising edge and output. Because they are valid at the falling edge, the data are latched at the falling edge in the modem. Because the number of 48-pins are restricted in this product, pins 47 and 48 are shared with the FMDATA pin. 4, 6, 14, 15, 17, 20, 24 VDDA AI Power input terminal for the analog circuit. 35 VDDD DI Power for the digital logic. 44 VDDM DI Power source for a logic circuit, related to the digital input /output, connected to an external digital logic such as the modem. 3, 5, 8, 13, 16, 18, 19, 23, 43 GND AI Analog circuit ground. Pin-18 is N.C. in the product. 34 GNDD DI Digital logic circuit ground. 33 NC - This pin is used for internal testing only and is not connected to anything. |
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