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VR4102 Datasheet(PDF) 71 Page - NEC |
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VR4102 Datasheet(HTML) 71 Page - NEC |
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71 / 701 page  CHAPTER 2 PIN FUNCTIONS 71 2.2.12 HSP MODEM Interface Signals Table 2-12. HSP MODEM Interface Signals Signal I/O Function IRING I RING signal detect signal. This pin becomes active when the RING signal is detected. ILCSENSE I Handset detect signal. OFFHOOK O On-hook relay control signal. MUTE O Modem speaker mute control signal. AFERST# O CODEC reset signal. SDI I Serial input signal from CODEC. FS I Frame synchronization signal from CODEC. SDO O Serial output signal to CODEC. HSPSCLK I Operation clock input of modem interface block for CODEC. TELCON O Handset relay control signal. HC0 O CODEC control signal. HSPMCLK O Clock output to CODEC. OPD# O Use this pin for controlling power of CODEC and DAA. This signal is set as active when to set power supply to them ON. 2.2.13 LED Interface Signal Table 2-13. LED Interface Signal Signal I/O Description of function LEDOUT# O This is an output signal for lighting LEDs. |
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