点读笔原理图

GND2GND4
VCC DD+ ID GND 9
GND3GND5
7
7
1UF
R67 470R C43 1UF
2
GND
PROG
1
R36
1 2
C46
1
1
2
0.1UF
R38 100K
+ C45 10UF
2
R46 100K/NC
3
Q16 KBM2301/NC
1
1
1
ESD3 0603ESDA-LC(1PF) 0603ESDA-LC(1PF)
7
ADO_SDIO D4 IN4001 R37 USB_DET VCC_REG 10K R34 3.3R/1/8W
R57 47R R59 3.6K
VDDIO GPIO9/SDA
J3 U7 SEN_D0
8
CN1
USB PENVDD U9 NCP349
加密DATA 加密CK 笔头通讯CK
IR_PWR
GPIO0 GPIO1
SDA SCL
GND P_EN WRITE_P EEPROM
1 2 3 4 5 6 7
1
2
1
4
36 35 34
31 30 29
U4 VCC_REG C40 0.1UF SEN_CMD SEN_CLK IR_PWR VDDIO VDDIO GPIO7/HP_DET GPIO13/POP R73 100K VDDIO J1 SEN_D0 SEN_D1
GPIO13/POP 1 GND
R18
10R
OUT
2
2
C11 473
C12 + 10UF
C13 0.1UF VCM VCIN C15 C16
3V3_AVDD 10UF 1UF PWR-IN VDDIO VDD C24 C26 C27 C28 12MI 12MO LI-VCC RESET USB_DET VREF_1.5V KEY_DET
R11 10K
NFC_CLE NFC_ALE NFC_WE NFC_WP
NFC_RB VDDIO R15 0R
VDDIO C21 0.1UF
R9 OUT C10 0.1UF R8 SPK_EN R12 U3 6.8K 1K
22K
3
VCC_REG
VCC
U8 R17 100K RESET C30
ZC3202N
1
48 47 46 45 40 39 35 34 33 28 27 26 25 24 23 22 21 20 15 14 11 5 4 3 2 1 38
R3 NC
VDDIO R5 0R VDDIO
2
NFC_RE VDDIO NFC_CE0 NFC_CE1
VDDIO
1
1
LED2 LED 红外指示 C8 102 LI-VCC
AO A1 A2 GND
1 2 3 4
SEN_CMD VCC_REG GND LED1 C41 10UF PENVDD
8
R62
6
8
7 6 5
2
4 3
VCC CHRG
BAT
5
BT1
3
2 2
3
GPIO2 GPIO5 GPIO6 GPIO7 GPIO8 GPIO9 GPIO10 GPIO11 GPIO12 GPIO13 GPIO15
GND GPIO3 ADO_SDIO
PD/IO RST
ZC90/SOP-8
GND
6
3 4
R74 100K
1 2 3 4
5 6 7 8 9
10 11 12
VSS_OSC RC_BIAS VDD_OSC
GND2 VDD3 XTAL_SEL XOUT XIN
C44 0.1UF
2
C42 10uF
5
按键电路
SW6 R40 28.7K1%
VDDIO 3V3_AVDD FB1 600RBEAD C38 + C37 C39 0.1UF 10UF 0.1UF
4 3 2 1
C17 0.1UF C20 103
VOUT
C18 SCE8891 10UF R14 47K C19 0.1UF
1VCC_REG
ININ+ BYPASS STANDBY
VCC VOUT1 VOUT2 GND
ESD4 0603ESDA-LC(1PF)
ESD5 C31
3
IN2
1 2 3 4 5
1
USB_DM USB_DP
IN1 GND /PLAG
/EN OUT2 OUT1
6 5 4
U5
MP2603
LI-VCC
Q3 KBM2301
Q4 KBM2301
PWR-IN
R35 0R R63 0R
8
33K 4.7K
VCC WP SCL SDA
GND_A VRO_P VRO_S TAVDD DP DN TAVSS
24 23 22 21 20 19 18 17 16 15 14 13
R31 R32
VCC_REG VCC_REG
VCC_REG
5
GPIO0 GPIO1 C50 R56 470R R58 470R 0.1UF R54 330K R55 5.6K KEY_DET R72 100K
IR接口电路
1 2 3
CONN3
1
4.7K 4.7K
SN9P701-00X
IR_PWR IR_LED R66 0R
R64 4.7K/NC VCC_REG IR_LED VCC_REG
IRED1 IRED_FEB1 IRED_FEB0 IRED0
VCC_REG
U6
VDDIO 1 2 SW3 SW4
GPIO10
VCC_REG
6
R68 NC LED1 LED0 Q5 IRED1 Q6 2SC1623/nec/l6 IRED0
1
VCC_REG
C48 0.1UF
点读/遥控切换开关
R45 33K C49 0.1UF
7
D2 5V1/1W PWR-IN VCC_REG
ADO_SCK
R50 47R R51 51K
2SC1623/nec/l6 GPIO2/SCLK IRED_FEB1 R52 8.21% R53 8.21% IRED_FEB0
28 27 26 25
33 32
VCC_REG
R29 GPIO3
510R
KEY0 USB_DET ADIO1
KEY2 wk.baidu.comEST RST
VDD5D PWR_CTL REG_EN REG_IN
BAT_DET BAT_SW
37 38 39 40 41 42 43 44 45 46 47 48
VDD GND3 SEN_CMD SEN_CLK SEN_D0 SEN_D1 OP_AGND IRED1 IRED_FEB1 IRED_FEB0 IRED0 OP_VDD VDD3-1 GND1 GPIO3 ADIO2 ADIO0 KEY1 GPIO0 GPIO1 GPIO2
GPIO1 NFC_ALE NFC_CLE NFC_RE NFC_WE NFC_CE0 NFC_CE1 NFC_D0 NFC_D1 NFC_D2 NFC_D3 NFC_D4 NFC_D5 NFC_D6 NFC_D7 NFC_RB SPK_EN POWER_ON POWER_OFF GPIO2/SCLK GPIO7/HP_DET GPIO0 GPIO10 GPIO13/POP GPIO5 GPIO9/SDA GPIO12/DATA
I/O0 I/O1 I/O2 I/O3 I/O4 I/O5 I/O6 I/O7 R/B2 R/B1 RE CE1 CE2 CLE ALE WE WP VCC VCC1 VSS VSS1
VSS5 NC17 NC16 NC15 NC14 PSL NC13 VCC5 NC12 NC11 NC10 NC9 VSS4 VCC4 VSS3 NC8 NC7 NC6 NC5 NC4 NC3 NC2 NC1 NC VSS2 VCC3 VCC2
3.3K D6
R41 1K
笔头通讯DA IR_CTRL
9
COMPANY: CHOMP TECHNOLOG(SHENZHEN) LTD DOCUMENT NO: ZC-P12331-TCL IC BODY: ZC3202N DRAWING BY: SOFT: CHECK BY: ZHAOGUOXING DATE: 20120704 SHEET: 1 Of
WRITE_P
R60 4.7K
R61
2 4 6 8 10 12
SEN_D0 SEN_CMD VCC_REG GND LED1 VIN_4.5V
SENSOR
SEN_D1 SEN_CLK AGND VCC_ANL LED0 GND0
1 3 5 7 9 11
SEN_D1 SEN_CLK GND VCC_REG LED0 GND
6 5 8 7
3
8R/1W SP1
R19 K9GAG08UOE
NC
4G
VSS
OID
J2 PENVDD EXT_WRITE P_EN R25 20K PENVDD POWER_EN P_EN PENVDD R28 30K C53 1UF
2
R24 47K
R26 220K
ADO_SCK
4
1UF
2
C36 1uF
1 1
12MO 12MHz Y1 VDDIO C4 20P C5 20P C9 VDDIO VREF_1.5V 0.1UF 0.1UF R7 R4 1M 12MI C3 VDD
2
备注：10UF全部用陶瓷电容
3
4
VDDIO
5
1
TP1 VDDIO TP2 GPIO13 TP3 GND HP_LOUT C29 10UF R21 4.7K R20 10R 10UF HP_ROUT C25
6
7
8
9
10 1
U2
GPIO6 15K1% USB_DP USB_DM HP_ROUT HP_LOUT
MCU
GPIO1是带下拉电阻
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33
C23 +
2
10UF 0.1UF
2
10UF 0.1UF 1UF
3
VDDIO SCE3889N27M
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
GPIO6_PD_WU/PWM LCD_CS VDD1V2 VCCUSB RREF VSS_USB USB_DP USB_DM HPVDD HP_OUTR HP_OUTL HPVSS VCM VCIN MICIN AVSS Line_INL Line_INR AVDD3V3 VREF1V5 AIN AVDD_LDO VDD3V3_OUT VDD1V2_OUT AVDD1V2_PLL DVSS XIN_12M XOUT_12M RESET GPIO8/USB_DET VBAT AVDD_BUCK
GPIO1_PD_WU NF_ALE/SPI_SCLK NF_CLE/SPI_DIN NF_RE/SPI_DOUT NF_WE GPIO4_PU/NF_CE0 GPIO3_PU/NF_CE1 DVSS1 NF_D0/MMC_D0/LCD_D0 NF_D1/MMC_D1/LCD_D1 NF_D2/MMC_D2/LCD_D2 NF_D3/MMC_D3/LCD_D3 NF_D4/MMC_D4/LCD_D4 NF_D5/MMC_D5/LCD_D5 NF_D6/MMC_D6/LCD_D6 NF_D7/MMC_D7/LCD_D7 NF_RB/GPIO14_PU/SPI_CS GPIO16_WU GPIO15_WU VDD3V3 GPIO11_WU/PWM GPIO2_PU_WU GPIO7_PU_WU GPIO0_PU_WU GPIO10_PU/MCLK/NF_CE3 GPIO13_PU_WU/TX GPIO5_PU/MCMD/NF_CE2 GPIO9_PU_WU GPIO12_PU_WU/RX VDD1V2_OUT0 DVSS0 SW12
1
NAND FLASH
U1 VDDIO NFC_D0 NFC_D1 NFC_D2 NFC_D3 NFC_D4 NFC_D5 NFC_D6 NFC_D7 NFC_RB
R6 VDDIO VDDIO R39 220R C22 0.1UF 10K
29 30 31 32 41 42 43 44 6 7 8 9 10 16 17 18 19 12 37 36 13
高电平开功放 低电平关功放
SCL SDA
IR_PWR_CTRL 模式切换 VOL+ USB检测
R99 1K/NC
2
1
4.2v LED1 LED 4.7K ON/OFF/PLAY/PAUSE SW1 D5 IN4148
2
AM24LC02
L2 10UH/0805
C52 22UF
9
直接下地线层
1
充电指示
POWER_OFF R43 R44 100K
R13 100R/NC R30 4.7K/NC
1 2
VDD PC/I TEST
GND OSC NC
8 7 6 5
GND C51 0.1UF
Q8 C81725/NC C47 0.1UF
VOL+
VOL-
SDA SCL
3 2
GPIO6 R42 MODE GPIO6高为遥控，低为点读 EXT_WRITE 220R