DP405 Service Manual
TX Path of Direct Frequency Synthesis
Modulation Method of Direct Frequency Synthesis
TX Filter based on Digital Signal Processing Technique
TX Modulation Gain Number is Adjustable
Digital voice activates TX control
High-performance Fractional PLL Frequency Synthesizer
Fully-integrated In-chip RF VCO
Fully-integrated Internal Loop Filter
Low Phase Noise
Fast Lock of Phase
High-frequency Resolution with Random Frequency Adjustable
Built-in Transistor Frequency Error Calibration Circuit
Sleep Mode of Ultra Low Loss
Three Wire Serial Digital Interface Control
3.6. Semiconductor Device Description
3.6.1. MCU Description
Pin No. Port No. Port Name Definition
E11 GPIO_D44 JM_RST Encrypted IC Reset
J19 BSENS MAND_IN Upside down IC level input
L22 ADC_IN BAT_DET Battery power check
W13 GPIO_D7 PF Side key input
R14 GPIO_D6 BEEP_C Received voice\alert tone switch control
W14 GPIO_D101 EERROM_WP EEPROM
AA17 GPIO_D24 ECN_3 Channel switch
AB17 GPIO_D23 ECN_2 Channel switch
V15 GPIO_D11 KEYPAD5 4*4 key
V16 GPIO_D99 KEYPAD3 4*4 key
V17 GPIO_D100 MAND_C Upside down IC power supply control
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