BB Circuit Introduction

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1 Base Band Circuit Introduction based on MT69

2 External Memory Interface 4 Chip select Pins: (CS0~) /CS0 for Nor flash /CS for psram /CS Sub LCM or Melody IC (NC) /CS 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

3 MCP decoder R0 0 /CE_F_88B /CE_F /CE_F_7B R0 is a jumper for option the different package MCP EA[] /ECS0_FLASH EA R0 nc U0 A Y0 6 GND Vcc VMEM /E Y 4 NC7SV9, NC7SZ9, NL7SZ9-D R0 nc /CE_F /CE_F In order to support two die Flash MCP Use EA decide which die selected If 64Mb only, R0 = 0 ohm and U0 and R0 NC For the GPRS and multi-media application, we suggest to use the MCP with page mode

4 NAND Flash 8 bit NFI interface NFI interface power supply is VDD R/#B (Ready/Busy) pin pulled high (47K) CS can support 8G bits bit ECC SLC device Pay attention: /WP -> /SYSRST 4

5 MT69 LCM Interface Pay attention that: GPIO[0:9] is internal pull down Reverse CAP or Varistor Array for ESD, CD should lower than pf

6 MT67 LCM interface Suggestion: Parallel NFI interface for the Main / Sub dual LCM LPCE#[:0] 8080 type 8 bit LRST# LRD# LPA0 8 or 9 bit 8080/6800 type 8/6 bit LWR# NLD[7:0] LSCK LSA0 LSDA LSCE0# LSCE# ERD# EWR# ECS[7:0] ED[:0] EA[:0] Parallel LCD Interface (NFI) Serial LCD Interface External memory Interface LCD Controller On-Chip Memory 6

7 LCM BL Control Provide two pins to control BL on/off and brightness GPIO enable PWM dimming control Duty 8V Frequency 7

8 VBAT LCD Backlight 4 D LTST-C9GDWT-G TP R G B R 00 R4 R Use GPIO pins for RGB Set R, R4 and R to limit Current to 0mA(Max) GPIO_GEN 8 mils R0 00K TP U4 FDG60N 8 mils 6 D S G G 4 S D 6 D U FDG60N S G G 4 S D GPIO0_REN/DAICLK T VCE (MLVS 040 M07) R4 00K GPO_BEN TP R 00K 8

9 Audio Interface Differential mode: MICBIASP=V MICBIASN=0V Single-end mode: MICBIASP=9V MICBIASN=0V C8,C9,L0 and L0 are for noise reduction C,C,C,B and B are for noise reduction 9

10 Audio Interface High pass filter fc=/*pi*rin*cin =/*pi*n*0k=80hz C8/C0 bypass cap for power supply filtering C7/C9 bypass cap for half-supply filtering External OP gain = 00K/0K = 4 db GPO is 0 during Sys reset Suggest add BEAD on Louder Speaker traces 0

11 Stereo Headset MP_OUTR and MP_OUTL for stereo headset Modify the R7 and R6 to trade-off the volume between loud speaker and headset mode Use MP_OUTR to create interrupt signal (EINT0_HEADSET) 4 ADC for send-end Key detection

12 Side Key Case Case S9 SIDE-SW : LSN S0 SIDE-SW : LSN RN KBR0 4 ESD4 KBC 6 R46 nc 4 U06 EMD6 VBAT ESD T06 VCE (MLVS 040 M07) 4 T0 T07 VCE (MLVS 040 M07) VCE (MLVS 040 M07) ESD KBC R4 nc KBR0 R47 0 KBR K (8P4R) KROW0 KCOL 4 S09 SIDE-SW : LSN [VOL_UP] T00 VCE ESD4 ESD9 T0 VCE 4 U0 EMD6 Use two dual transistors to strengthen the ESD protection in theside key If no ESD issue, short R4 and R46 to reduce components

13 MT60 Power Key MT68 KBC4 KBR0 U EMD6 R8 00K TP07 VBATBB S00 KSW [POWER ON/OFF, END] PWRKEY KCOL6 D400 RB0S-0 SW400 KSW [PWR ON/OFF] [END] PWRKEY 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

14 Keypad Scanner Set de-bounce time Keypad Key index State Scanner matrix machine 7 columns (Input) x 6 rows (Output) Detect one or two key-pressed simultaneously Software only supports one key detection now Keypad COL6 COL COL4 COL COL COL COL0 Key pressed Key released KP (NIRQ) ROW 0 ROW4 0 ROW 0 ROW 0 ROW 0 ROW

15 Hall Sensor IC VDD R nc EINT Normal Low, High Active Change 47K to nc 004// EINT_CLAMDET clam shell OPEN (EINT "L") clam shell CLOSE (EINT "H") R7 nc C6 0p U0 VS PRG GND GND 6 4 Q GND TLE497 C 00n PRG pin Low : magnet close EINT goes H magnet open EINT goes L

16 VCHG Auxiliary ADC Unit F FUSE(A 060) C0 u (080 YV 6V) C04 nc ADC0, ADC for charging current sensing and battery voltage monitor TP4 VBAT AVDD C07 nc 4 G D S D 6 A K 7 8 K A U0 SI48 ADC for battery temperature monitor Need Calibration: 4V and 4V TP TP R6 4K R7 0 (% 080 /4W) BT00 VBAT BATDET TEMP GND BATTERY CONN 4 C48 47u (080 XR 0V) BATDET ADC_TBAT TP RN K (%) ADC0_I- ADC_I+ 6

17 USB EINT_USB USB_PWR D00 RB0S-0 USB POWER R49 K R40 7K T09 MLVS060K4 ESD GPO_USB_EN C49 0n U40 4 /SHDN GND BP VIN VOUT APLBI R48 0 USB_PWR C48 u (6V K 060 XR) C40 u (6V K 060 XR) VUSB Without external USB transceiver for USB port Support USB and Microsoft Windows driver compatible Divide the USB_PWR (V) by R49 and R40 to create EINT signal ( must over 08*8V= 4) ua leakage current Trade-off! V LDO to provide VUSB power to BB USB block Short the USB_PWR and CHR pins in the USB cable! Reason : Charging power on the handset when USB plugged in Reason : BB can handle the USB charging function (Option) 7

18 USB Detection Method Supplement Dedicated EINT from USB_PWR GPIO Input mode USB_PWR USB POWER USB_PWR USB POWER EINT_USB D00 RB0S-0 R49 K R40 7K T09 MLVS060K4 ESD GPIO4 D00 RB0S-0 R49 K R40 7K T09 MLVS060K4 ESD ADC Measure USB_PWR 4 ADC Measure D- ADC4_USB ADC4_USB > V : USB < V : NO USB POWER R49 00K T09 R40 00K MLVS060K4 ESD USB_PWR USB_DP USB_DM VCHG R40 K R406 R407 VUSB AVDD > 4V ==> Charger < 4V ==> USB R40 00K D0 RB0G-0 ADC_ACCESSORY 4 J40 GND NC D+ D- VUSB UX60R-MB-ST 8

19 Pre-charge LED indicator VCHG VBATUP D409 D40 RB0S-0 RB0S-0 R48 47K VBATBB R47 00 F400 FUSE(A 060) 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 upcaseas LED power) RLED_EN 6 D S D4 D4 G RB0S-0 RB0S-0 PRECHR_LED_EN# NMOS PMIC internal PRECHR_LED_EN# GPIO_RLED_EN 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 GPIO9_PRECHR_LEDEN GND 9

20 Storage-not support hot plug T-Flash VDD SD800 MCDA MCDA0 MCCK MCCM0 MCDA MCDA DAT DAT0 VSS CLK VDD CMD CD/DAT DAT Shield Shield Shield Shield RN0 0 (8P4R) TFR(SCHBA000) ESD800 ESD80 + C800 0u (080 XR 6V) ESD804 ESD806 ESD80 ESD80 MCINS MCWP ESD80 Pay attention that: MCCK is 4MHz in the new S/W architecture, after 0B The CAP parallel on the signal must lower than pf 0

21 Storage-support hot plug / This connection suit that Cards connector can not support hot plug, use CD/DAT of SD00 for detect pin One bit, Floating MCDA, MCDA and MCDA of MT69 Connect MC_CD/DAT to MCINS of MT69 4 S/W should disable the pull up resistor in MCINS of MT69 CD/DAT is pull up by an 0k resistor in T-Flash cards or MicroSD, so low to high of MCINS indicate cards plug in, high to low indicate cards plug out

22 Storage-support hot plug / MCINS is pull high in MT69 Connector con be divided into normal OPEN or CLOSE types 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

23 Storage-support hot plug /

24 Thank You! 4

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