DVB-C 机顶盒原理图.pdf

VCC_SCI3V3_MOSSIMCARD
10K10K

VCC_SCI

J26
R250R250R156R1561K1K560560R209R209

7
R533
3SIM0_CLKSIM0_CLK6
3SIM0_RST_OUTSIM0_RST_OUT5
4
R32
3SIM0_DATASIM0_DATA333
3SIM0_DETSIM0_DET2
1
100pF/NC100pF/NC
100pF100pFCON7,P2.5MM
100pF100pF
10K/NC10K/NC
100nF100nFR233
1K
C16C16C17C17100pF100pFC18C18
C123C123
C180C180
R210R210

5V0_MOS

23SIM0_RST_OUT
SCICardInterfaceSIM0_RST_OUT
E
C
B
Q2
10K10K
MM39061

R21510K

5V0_MOSR214R214

VCC_SCI
LB18FB120R0805DECAL
3
2
3

12R31310R,0805R254R2544.7K4.7K
3
E
C
B

Q11
10K10K

11
MM3906220uF,10V220uF,10V3SIM0_RSTSIM0_RSTR2534.7KQ16
+1MM3904
2
C59C59
2
R21110KC179C179100nF100nF
R212R212
2
4.7K4.7K
R216R21610K10K
3
R251R251
3SCICardResetControl
SIM0_PWRENR2524.7K1Q15
3SIM0_PWREN1MM3904
10K10K
2
2
R213R213

SCICardPowerControl
WDG_RSTNWDG_RSTN3

33333V3_MOS

3V3U1
R16R16
R171K32R18100RESET_SYS

VCCRESETRESET_SYS4.7K4.7K4.7K4.7K
GND

MAX8091
100K100K
100nF100nF
R247R247R246R246
3TDO_ICER245R2454.7K/NC4.7K/NC

3TCK_ICEC176C176100nF100nF

C175C1753TMS_ICE
C373C3731nF1nF3TDI_ICE
R299R299
3TRST_ICE
TRST_ICE
1K1K
10K10K
R155R155

R208R208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_MOS
4.7K4.7K4.7K4.7K
C178C178100nF100nF
R249R249R158R158

5V0_MOS
J24
UART0_TXD3
1
2UART0_TXD
3UART0_RXDUART0_RXD3
4

CON4,P2.5MM
5V0_T

tuner2K2K

5V0_TU10
R35R352K2K
QAM_SCLR34R34
QAM_SCLQAM_SDA
5V0_MOSQAM_SDAR86
L822uH/DIP10K/NC
1
100pF100pF
100pF100pF
5V0_TC2610uF,16V2NC
3RF_AGC
NC
C101C101
C102C102R83334
R845SCL
33SDA
R8506
7CAS
8VCC12
VTSS1
1913
1000uF,10V1000uF,10VQAM_VINP10IF_AGCS214
+100nF100nF100pF100pFQAM_VINPC171100nFR233
QAM_VINNC172100nFR311DIF2S315
QAM_VINN33DIF1S4

2DCT70707
C170C170C222C222
C330C330

IF_AGC4.7KR171330
IF_AGCR244
100nF100nF
100nF100nF
C173C173
C174C174putthesecircuitnearTuner
putthesecircuitnearHI3716M
MII&RMIIC158100nF

U2
RX-_PHY046TX-_PHY0
3RX-_PHY0TX-_PHY03
RX+_PHY05RX-TX-7TX+_PHY0
3RX+_PHY0RX+TX+TX+_PHY0349.9R,1%49.9R,1%49.9R,1%49.9R,1%
3V3_MOS
828
R2434.7K3V3_MOS
CLK_50M_PHY09XOCOL/CONFIG029
3CLK_50M_PHY0XI/REFCL