MTK手机基带各种电路的分析和介绍

1 Base Band Circuit Introduction based on MT6219 欢迎到移动叔叔论坛www.mobileuncle.com MTK板块交流 2 External Memory Interface • 4 Chip select Pins: (CS0~3) /CS0 for Nor flash /CS1 for pSRAM /CS2. Sub LCM or Melody IC (NC) /CS3. Main LCM We have verify many MCP supplier’s parts, including Spansion, Toshiba, Renesas, Intel.. Pay attention to: Renesas nor die or intel Tyax: /WP->GND Others nor die: /WP->Vmen 欢迎到移动叔叔论坛www.mobileuncle.com MTK方案板块交流 3 MCP decoder VMEM /CE_F2 /CE_F2_88B /CE_F2_73B /CE_F1 EA[1..23] /ECS0_FLASH /CE_F2 EA23 R350 0 1 2 3 R303 nc R302 nc U302 NC7SV19, NC7SZ19, NL7SZ19-D 1 2 3 4 5 6 A GND /E Y1 Vcc Y0 • R350 is a jumper for option the different package MCP • In order to support two die Flash MCP. • Use EA23 decide which die selected. • If 64Mb only, R303 = 0 ohm and U302 and R302 NC • For the GPRS and multi-media application, we suggest to use the MCP with page mode. 欢迎到移动叔叔论坛www.mobileuncle.com MTK方案板块交流 4 NAND Flash • 8 bit NFI interface • NFI interface power supply is VDD • R/#B (Ready/Busy) pin pulled high (47K) • 1 CS can support 8G bits •1 bit ECC SLC device •Pay attention: /WP - > /SYSRST 欢迎到移动叔叔论坛www.mobileuncle.com MTK方案板块交流 5 MT6219 LCM Interface Pay attention that: GPIO[0:9] is internal pull down Reverse CAP or Varistor Array for ESD, CD should lower than 33pF 欢迎到移动叔叔论坛www.mobileuncle.com MTK方案板块交流 6 MT6217 LCM interface • Suggestion: Parallel NFI interface for the Main / Sub dual LCM LCD Controller On-Chip Memory Parallel LCD Interface (NFI) Serial LCD Interface External memory Interface • LPCE#[2:0] • LRST# • LRD# • LPA0 • LWR# • NLD[7:0]• LSCK • LSA0 • LSDA • LSCE0# • LSCE1# • ERD# • EWR# • ECS[7:0] • ED[15:0] • EA[25:0] 8080 type 8 bit 8 or 9 bit 8080/6800 type 8/16 bit 欢迎到移动叔叔论坛www.mobileuncle.com MTK方案板块交流 7 LCM BL Control 2.8V Frequency Duty • Provide two pins to control BL on/off and brightness 1. GPIO enable 2. PWM dimming control 欢迎到移动叔叔论坛www.mobileuncle.com MTK方案板块交流 8 LCD Backlight 1. Use 3 GPIO pins for RGB 2. Set R3, R4 and R5 to limit Current to 20mA(Max) VBAT GPIO13_GEN GPIO0_REN/DAICLK GPO3_BEN R15 100K R10 100K TP3 D1 LTST-C19GD2WT-G 123 4 R5 33 TP1 R14 100K T5 VCE (MLVS 0402 M07) 1 2 . . G1 S2G2 D2S1 D1 U4 FDG6303N 1 6 3 45 2 G1 S2G2 D2S1 D1 U5 FDG6303N 1 6 3 45 2 R4 33 R3 100 TP2 R G B 8 mils 8 mils 欢迎到移动叔叔论坛www.mobileuncle.com MTK方案板块交流 9 Audio Interface Differential mode: MICBIASP=2.2V MICBIASN=0.3V Single-end mode: MICBIASP=1.9V MICBIASN=0V C218,C219,L202 and L203 are for noise reduction C1,C2,C3,B1 and B2 are for noise reduction 欢迎到移动叔叔论坛www.mobileuncle.com MTK方案板块交流 10 Audio Interface •High pass filter fc=1/2*pi*Rin*Cin =1/2*pi*22n*20K=80Hz •C218/C220 bypass cap for power supply filtering •C217/C219 bypass cap for half-supply filtering •External OP gain = 100K/20K = 14 dB •GPO1 is 0 during Sys reset •Suggest add BEAD on Louder Speaker traces 欢迎到移动叔叔论坛www.mobileuncle.com MTK方案板块交流 11 Stereo Headset 1. MP3_OUTR and MP3_OUTL for stereo headset. 2. Modify the R217 and R216 to trade-off the volume between loud speaker and headset mode. 3. Use MP3_OUTR to create interrupt signal (EINT0_HEADSET) 4. ADC5 for send-end Key detection 欢迎到移动叔叔论坛www.mobileuncle.com MTK方案板块交流 12 Side Key – Use two dual transistors to strengthen the ESD protection in the side key. – If no ESD issue, short R245 and R246 to reduce components. VBAT KBR0 KBC2 KBR0 KBC3 KBR0 S220 SIDE-SW : LS11N2 1 2 345 ESD14 1 2 1 2 R245 nc R246 nc ESD13 1 2 1 2 T207 VCE (MLVS 0402 M07) 1 2 . . T206 VCE (MLVS 0402 M07) 1 2 . . T205 VCE (MLVS 0402 M07) 1 2 . . U205 EMD6 1 6 2 3 45 ESD12 1 2 1 2 R247 0 1 2 3 U206 EMD6 1 6 2 3 45 S219 SIDE-SW : LS11N2 1 2 345 RN201 100K (8P4R) 1 2 3 45 6 7 8 Case 1 Case 2 KROW0 T300 VCE 1 2 . . E S D 31 9 1 2 1 2 [VOL_UP] S309 SIDE-SW : LS11N2 1 2 3 4 5 T301 VCE 1 2 . . KCOL1 E S D 31 4 1 2 1 2 欢迎到移动叔叔论坛www.mobileuncle.com MTK方案板块交流 13 Power Key • “Low level” on the PWRKEY pin of the PMIC to turn on the LDOs • Software must check whether it is “power key” then show normal power on MMI. VBATBB KBR0 KBC4 PWRKEY R328 100K TP307 S300 KSW 1 2 U306 EMD6 1 6 2 3 4 5 [POWER ON/OFF, END] •MT6205 •MT6218 [PWR ON/OFF] [END] SW400 KSW 1 2 D400 RB520S-30 1 2KCOL6 PWRKEY 欢迎到移动叔叔论坛www.mobileuncle.com MTK方案板块交流 14 Keypad Scanner • Keypad – 7 columns (Input) x 6 rows (Output) – Detect one or two key-pressed simultaneously – Software only supports one key detection now. Keypad matrix Scanner State machine KP (NIRQ)Key index Set de-bounce time Key pressed Key released COL6 COL5 COL4 COL3 COL2 COL1 COL0 ROW5 ROW4 ROW3 ROW2 ROW1 ROW0 1 1 1 1 1 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 10 0 0 0 0 欢迎到移动叔叔论坛www.mobileuncle.com MTK方案板块交流 15 Hall Sensor IC • PRG pin “Low”: magnet close à EINT goes “H” • magnet open à EINT goes “L” VDD EINT2_CLAMDET R221 nc C216 10p R217 nc C215 100n U203 TLE4917 1 2 3 4 5 6 VS GND Q GND GND PRG EINT2 Normal Low, High Active Change 47K to nc 2004/1/5 clam shell CLOSE (EINT2 "H") clam shell OPEN (EINT2 "L") 欢迎到移动叔叔论坛www.mobileuncle.com MTK方案板块交流 16 Auxiliary ADC Unit AVDD VCHG VBAT ADC1_TBAT BATDET TP312 TP314 F1 FUSE(1A 0603) TP313 C307 nc TP315 U301 SI4833 12 7 8 34 5 6 AA K K SG D D R316 24K R317 0.33 (1% 0805 1/4W) C348 4.7u (0805 X5R 10V) C304 ncC303 1u (0805 Y5V 16V) RN301 100K (1%) 1 2 3 4 5 6 7 8 BT300 BATTERY CONN. 1 2 3 4 VBAT BATDET TEMP GND ADC0_I- ADC3_I+ 1. ADC0, ADC3 for charging current sensing and battery voltage monitor 2. ADC1 for battery temperature monitor 3. Need Calibration: 3.4V and 4.2V 欢迎到移动叔叔论坛www.mobileuncle.com MTK方案板块交流 17 USB USB_PWR VUSB GPO2_USB_EN R418 0 C420 2.2u (6.3V K 0603 X5R) U402 APL515133BI 3 2 4 5 1 /SHDN GND BP VOUT VIN C418 1u (6.3V K 0603 X5R) C419 10n • Without external USB transceiver for USB port. • Support USB1.1 and Microsoft Windows driver compatible • Divide the USB_PWR (5V) by R419 and R420 to create EINT3 signal ( must over 0.8*2.8V= 2.24). 35uA leakage current. “Trade-off !” • 3.3V LDO to provide VUSB power to BB USB block • Short the USB_PWR and CHR pins in the USB cable ! Reason 1: Charging power on the handset when USB plugged in Reason 2: BB can handle the USB charging function (Option) T309 M LV S 06 03 K 14 1 2 . . USB POWER EINT3_USB1 R419 2.2K R420 2.7K E S D 33 5 1 2 1 2 USB_PWR D300 RB520S-30 1 2 欢迎到移动叔叔论坛www.mobileuncle.com MTK方案板块交流 18 USB Detection Method Supplement T309 M LV S 06 03 K 14 1 2 . . USB POWER EINT3_USB1 R419 2.2K R420 2.7K E S D 33 5 1 2 1 2 USB_PWR D300 RB520S-30 1 2 1. Dedicated EINT from USB_PWR 2. GPIO – Input mode ADC4_USB > 2V : USB < 2V : NO USB_PWR USB POWER T309 M LV S 06 03 K 14 1 2 . . R420 100K ADC4_USB 3 R419 100K E S D 33 5 1 2 1 2 3. ADC – Measure USB_PWR 4. ADC – Measure D- USB_DP R405 1K5 R407 33USB_DM VCHG R401 100K R406 33 AVDD J401 UX60R-MB-5ST 1 2 3 4 5 VUSB D- D+ NC GND > 1.4V ==> Charger ADC5_ACCESSORY VUSB < 1.4V ==> USB D202 R B 52 0G -3 0 1 2 USB POWER T309 M LV S 06 03 K 14 1 2 . . USB_PWR GPIO42 1 E S D 33 5 1 2 1 2 R419 2.2K R420 2.7K D300 RB520S-30 1 2 欢迎到移动叔叔论坛www.mobileuncle.com MTK方案板块交流 19 Pre-charge LED indicator VBATBB VBATUP RLED_EN PRECHR_LED_EN# GPIO5_RLED_EN D412 RB520S-30 12 D411 RB520S-30 12 D409 RB520S-30 12 D410 RB520S-30 12 R428 4.7K R427 100 VCHG F4 00 FU S E (1 A 0 60 3) • GPIO9 internal pull low. (default low) • When it is in the pre-charging mode, NMOS is open, PRECHR_LED_EN# pull high by VCHG to turn Red LED. (Provide VCHG to upcase as LED power) • When it is in the Normal charging mode, GPIO9 will go high by software to turn on the NMOS, then PRECHR_LED_EN# goes low and RED LED off. GND GPIO9_PRECHR_LEDEN PRECHR_LED_EN# G1S1 D1 1 6 2 NMOS PMIC internal 欢迎到移动叔叔论坛www.mobileuncle.com MTK方案板块交流 20 Storage-not support hot plug T-Flash MCCM01 VDD MCDA11 E S D 80 0 1 2 1 2 + C800 10u (0805 X5R 6.3V) MCDA31 MCCK1 MCDA21 SD800 TFR(SCHB1A0100) 1 2 3 4 5 6 7 8 11 10 12 9 DAT2 CD/DAT3 CMD VDD CLK VSS2 DAT0 DAT1 Shield Shield Shield Shield MCDA01 E S D 80 3 1 2 1 2 E S D 80 5 1 2 1 2 E S D 80 4 1 2 1 2 E S D 80 1 1 2 1 2 E S D 80 6 1 2 1 2 E S D 80 2 1 2 1 2 MCWP3 RN102 0 (8P4R) 1 2 3 4 5678 MCINS3 Pay attention that: MCCK is 24MHz in the new S/W architecture, after 05B The CAP parallel on the signal must lower than 33pF 欢迎到移动叔叔论坛www.mobileuncle.com MTK方案板块交流 21 Storage-support hot plug 1/3 1. This connection suit that Cards connector can not support hot plug, use CD/DAT3 of SD300 for detect pin. 2. One bit, Floating MCDA1, MCDA2 and MCDA3 of MT6219 3. Connect MC_CD/DAT3 to MCINS of MT6219 4. S/W should disable the pull up resistor in MCINS of MT6219 5. CD/DAT3 is pull up by an 50k resistor in T-Flash cards or MicroSD, so low to high of MCINS indicate cards plug in, high to low indicate cards plug out. 欢迎到移动叔叔论坛www.mobileuncle.com MTK方案板块交流 22 Storage-support hot plug 2/3 1. MCINS is pull high in MT6219 2. Connector con be divided into normal OPEN or CLOSE types 3. For normally Open type, high to low of MCINS indicate Card plug in, low to high indicate cards plug out, vice versa! 4. Pay attention to the Varistor CAP parameter 欢迎到移动叔叔论坛www.mobileuncle.com MTK方案板块交流 23 Storage-support hot plug 3/3 欢迎到移动叔叔论坛www.mobileuncle.com MTK方案板块交流 24 Thank You! 欢迎到移动叔叔论坛www.mobileuncle.com MTK方案板块交流