0-1 MT6620_Combo_Module_Application_Note__V2.3_20111024

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WIFI_INT_B WiFI interrupt pin LXBK OUTBK_PMU Built-in SMPS feedback pin, 4.7uF and 2.2uH required Built-in SMPS output pin, 4.7uF and 2.2uH required Vbat input pin
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Change List
Internal Use
▪ Module features overview
▪ Module pin description and reference design ▪ PCB /Antenna layout guide.
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ANT1005 101266-1 50 Ohm R1020
CON1002
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ANT1002 101266-1 1
ANT1001 101266-1 1
WIFI/BT/GPS Single ANT Ref.
CON1001 U1007 50 Ohm 5 1 3 MM8430-2610B_RA1_RB3 50 Ohm 6 Ant._RF GN D GN D GN D GN D GN D GN D GPS_RF 3 50 Ohm 4 DGLT36M07_EPCOS WiFi/BT_RF 1 50 Ohm C1024 C1037 15pF 18pF GPS_RF OUT IN 1 U11 WiFi_BT_ANT 6 0R 50 Ohm C1026 NC 2 4
WF_PA_VDD WiFi PA VDD supply input, 3.3V WF_PA_LDOO WiFi PA 3.3V VDD supply output, UT external 4.7uF required DVDDIO18 VDD for digital interface IO
FM_AUIN_R FM analog input, R channel GND2 Ground pin
RTCCLK_O RTC xtal RTC xtal / external RTC clock input RTCCLK port OSC_IN Xtal / TCXO input port
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2.8V / 1.8V output for external TCXO TCXO_LDO VDD supply support PCTCXO temperature voltage measurement support PCTCXO temperature voltage measurement stripping pin for TCXO_LDO voltage selection
MT6620 Module Pin Description
Pin description VDD for EEDI / Antenna selection DVDDIO28 interface GPS_SYNC external GPS SYNC signal I2S_DATA_IN I2S_DATA_IN I2S_CLK I2S_CLK
LDO enable for I/O power 32K output 6620 PMU_EN
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100ms 110ms
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30ms
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SYSTEM_RST
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FM_TX_OUT FM_RX_N FM_RX_P VRTC FM long antenna input port VDD of RTC domain AUX_REF RF_I_CAL GPS_ANT_P GPS input port EEDI
FM TX port / FM short antenna input port FM differential input- N port. A short trace should be reserved and connected to ground
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Ref Clock Source
– Supported Xtal / TCXO / PCTCXO
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•Block Diagram
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MT6620 Module Block Diagram Overview
Internal Use
Internal Use
MT6620 Power On Sequence
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WiFi/BT/GPS/FM Tx/Rx full-featured combo module
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MT6620 Combo Module Overview
▪ ▪ ▪ ▪
WiFi / BT / GPS / FM combo Size : 8.3 x 7.4x1.0 mm Pad Pitch : 0.5mm Support Interface:
Pin No Pin name
Pin description
Pin No Pin name
Pin description
Pin No Pin name
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I2S_DATA_OU I2S_DATA_OUT T BT input/output port WiFi input/output port Efuse enable pin All system interrupt pin
Internal Use
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Copyright © MediaTek Inc. All rights reserved.
MT6620 Combo Module Application Note_V2.3
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WCN/SE/SA/Wangwei
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Internal Use


WiFi self-calibration function embedded Supported WiFi 11b/g /n features Supported WiFi SDIO 2.0 (4-bits and 1-bit up to 50MHz) Bluetooth specification 3.0+HS (802.11 AMP) compliance (W1126 ready) Supported Bluetooth 4.0, BT Low Energy (LE) GPS/GALILEO/QZSS/SBAS(WAAS/MSAS/EGNOS/GAGAN) support Best GPS sensitivity : -165 dBm tracking sensitivity, -160 hot start sensitivity. Supported FM 76-108MHz band with 50KHz step. Supported FM RDS/RBDS
antenna selection pin use for external swtich control antenna selection pin use for external swtich control
FM_AUOUT_L FM analog output, L channel FM_AUIN_L FM analog input, L channel
Clock pin of SDIO1
Command pin of SDIO1
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SD1_DATA1 Data pin of SDIO1
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41 42 43 44 I2S_WS I2S_WS PCM1CLK PCM CLK PCM OUT PCM IN PCM1OUT PCM1IN PCM1SYNC PCM SYNC BT_ANT GND4 WIFI_ANT FSOURCE ALL_INT_B GND5 GND6 GND7 GND8 GND9 Ground pin Ground pin Ground pin Ground pin Ground pin Ground pin
▪ Modify FM_TX/RX audio path application circuit in page 10.
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Copyright © MediaTek Inc. All rights reserved.
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▪ Add Power Sequence in Page5
Internal Use
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GN D 6 2 4 5 1 3 C58 0R 50 Ohm C1028 NC 50 Ohm 3 OUT IN 1 18pF MM8430-2610B_RA1_RB3 LTB-2012-2G4H6-D14 F1 CON1003 6 2 4 5 1 3 C59 U10 IN 5 3 2 C1035 NC 18pF G G G 0R 50 Ohm 50 Ohm 4 OUT 1 MM8430-2610B_RA1_RB3 MT6620_2V8 RTCCLK_6620 2,16 TP1009 TP30MIL OSC_IN_6620 RTCCLK_O 1 R T C C LK R T C C LK_O 33 OSC _IN 35 SYSRST_B OSC_EN 1 3 42 54 2 10 55 39 50 49 48 47 38 37 SYSRST_B_6620 2 OSC_EN_6620 2 GPS_SYNC_6620 GPS_SYNC FSOURCE