DVB-C 机顶盒原理图.pdf

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1、VCC_SCI3V3_MOSSIMCARD10KVCC_SCIR250R1561K560R209J267SIM0_CLKR53363SIM0_CLKSIM0_RST_OUT53SIM0_RST_OUT4SIM0_DATAR323333SIM0_DATASIM0_DET23SIM0_DET1100pF100pF/NC100pF10K/NCCON7,P2.5MM100nFR2331KC16C17100pFC18C123C180R2105V0_MOSSCICardInterface23SIM0_RST_OUTSIM0_RST_OUTECBQ210K1MM3906R2

2、1510K5V0_MOSR214VCC_SCI0805DECALLB18FB120R32312R31310R,0805R2544.7KE3CBQ111MM390610K220uF,10V3SIM0_RSTSIM0_RSTR2534.7K1Q16+1MM39042C59R21110KC179100nF2R21224.7KR21610K3R2513SCICardResetControlSIM0_PWRENR2524.7K1Q153SIM0_PWREN1MM390410K22R213SCICardPowerControlWDG_RSTNWDG_RSTN3333V3_

3、MOS3V3U1R16R171K32R18100RESET_SYSVCCRESETRESET_SYS4.7K4.7KGNDMAX8091100K100nF3TDO_ICER247R246R2454.7K/NCC176100nF3TCK_ICEC1753TMS_ICEC3731nFR2993TDI_ICE3TRST_ICETRST_ICE1K10KR155R208为了将CA下面的按键和CAconnector移开，特将JTAG删除，将spi移到背面。5V0_MOS4.7K4.7KC178100nFR249R1585V0_MOSJ24UART0_TXD312UART

4、0_TXD3UART0_RXDUART0_RXD34CON4,P2.5MM5V0_Ttuner2K5V0_TU10QAM_SCLR34R352KQAM_SCLQAM_SDA5V0_MOSQAM_SDAR86L822uH/DIP10K/NC100pF100pF1NC5V0_TC2610uF,16V2RF_AGC3NCC101C102R83334SCLR84335SDAR8506CAS7VCC81219VTSS1131000uF,10VIF_AGCS2+100nF100pFQAM_VINPQAM_VINPC171100nFR23310DIF2S314QAM_VIN

5、NC172100nFR3331115QAM_VINNDIF1S42DCT70707C330C170C222IF_AGCR2444.7KR171330IF_AGC100nF100nFC174C173putthesecircuitnearTunerputthesecircuitnearHI3716MMII&RMIIC158100nFU2RX-_PHY046TX-_PHY03RX-_PHY0RX-TX-TX-_PHY033RX+_PHY0RX+_PHY05RX+TX+7TX+_PHY0TX+_PHY0349.9R,1%49.9R,1%3V3_MOS828R2434.

6、7K3V3_MOSXOCOL/CONFIG03CLK_50M_PHY0CLK_50M_PHY09XI/REFCLKCRS/CONFIG129T2TX+_PHY0R122R12111030R167330LED0_LINK_ACT3TX+_PHY0TX-_PHY02P1/TD+REXTLED0/NWAYEN31R169330LED0_BASE3TX-_PHY0P2/TD-MDIO11LED1/SPEED3RX+_PHY0RX+_PHY03P3/RD+3MDIOMDIO43MDCKMDCK12MDC^INTRP215P4/CTCON6,P2.5MM/NCR3310K

7、RX-_PHY06P5/CT5V0_VBUS01932EHT_RSTN3RX-_PHY0P6/RD-C15100pFRXDV_RMII0R1510018RXC^RSTEHT_RSTN37P7RXDV_RMII0R10100RXDV/CRSDV/CONFIG286R1286.49K,1%RXD0_RMII0RXD0_RMII016229P8/GND5RXD1_RMII0R1310015RXD0/DUPLEXTXC23TXEN_RMII0100nFSHIELD1RXD1_RMII0RXD1/PHYAD2TXENTXEN_RMII03104TX+_PHY01424T

8、XD0_RMII0SHIELD2RXD