MDM9205平台射频卡分析

深碍√TFBOYSˉ_ 2022-11-03 00:55 211阅读 0赞

MDM9205物联网平台的整体设计框图如下：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2Nvcm5lcnN0b25lMQ_size_16_color_FFFFFF_t_70]

为了满足class3的要求，还需要外加PA和ASM的，其射频原理图如下：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2Nvcm5lcnN0b25lMQ_size_16_color_FFFFFF_t_70 1]  
其中SDR105是内部包括transceiver, power amplifier和antenna switch的。其逻辑框图如下：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2Nvcm5lcnN0b25lMQ_size_16_color_FFFFFF_t_70 2]  
**射频卡配置**

//物理设备
    rfc_phy_device_info_type rfc_sdr105_riot_cls3_9x05_phy_devices_list[] = 
    {
        
      {
         /*Device: SDR105 transceiver */ 
        SDR105, /* PHY_DEVICE_NAME */ 
        0, /* PHY_DEVICE_INSTANCE */ 
        RFC_NO_ALTERNATE_PART, /* PHY_DEVICE_ALT_PART_NUM_OF_INSTANCE */ 
        RFDEVICE_COMM_PROTO_RFFE, /* PHY_DEVICE_COMM_PROTOCOL */ 
        RFDEVICE_COMM_PROTO_VERSION_DEFAULT, /* PHY_DEVICE_COMM_PROTOCOL_VERSION */ 
        {
            0,0 /* 0 not specified */,}, /* PHY_DEVICE_COMM_BUS */ 
        0X217, /* PHY_DEVICE_MANUFACTURER_ID */ 
        0xC6, /* PHY_DEVICE_PRODUCT_ID */ 
        ( 1 | RFC_SKIP_RFFE_DETECT_BIT_IND ), /* PHY_DEVICE_PRODUCT_REV */ 
        0x09, /* DEFAULT USID RANGE START */
        0x09, /* DEFAULT USID RANGE END */
        0x09, /* PHY_DEVICE_ASSIGNED_USID */ 
        0 /*Warning: Not specified*/, /* RFFE_GROUP_ID */ 
        FALSE, /* INIT */ 
        RFC_INVALID_PARAM, /* ASSOCIATED_DAC */ 
      }, /* END - Device: SDR105 */ 
      
      {
         /*Device: SDR105 ASM */ 
        GEN_DEVICE /* IOTFE */, /* PHY_DEVICE_NAME */ 
        1, /* PHY_DEVICE_INSTANCE */ 
        RFC_NO_ALTERNATE_PART, /* PHY_DEVICE_ALT_PART_NUM_OF_INSTANCE */ 
        RFDEVICE_COMM_PROTO_RFFE, /* PHY_DEVICE_COMM_PROTOCOL */ 
        RFDEVICE_COMM_PROTO_VERSION_DEFAULT, /* PHY_DEVICE_COMM_PROTOCOL_VERSION */ 
        {
            1,0 /* 0 not specified */,}, /* PHY_DEVICE_COMM_BUS */ 
        0X217, /* PHY_DEVICE_MANUFACTURER_ID */ 
        0xC7, /* PHY_DEVICE_PRODUCT_ID */ 
        1, /* PHY_DEVICE_PRODUCT_REV */ 
        0x0A, /* DEFAULT USID RANGE START */
        0x0A, /* DEFAULT USID RANGE END */
        0x0A, /* PHY_DEVICE_ASSIGNED_USID */ 
        0 /*Warning: Not specified*/, /* RFFE_GROUP_ID */ 
        FALSE, /* INIT */ 
        RFC_INVALID_PARAM, /* ASSOCIATED_DAC */ 
      }, /* END - Device: IOTFE */ 
    
      {
         /*Device: ASM_RR88916 */ 
        GEN_DEVICE /* ASM_RR88916 */, /* PHY_DEVICE_NAME */ 
        2, /* PHY_DEVICE_INSTANCE */ 
        RFC_NO_ALTERNATE_PART, /* PHY_DEVICE_ALT_PART_NUM_OF_INSTANCE */ 
        RFDEVICE_COMM_PROTO_RFFE, /* PHY_DEVICE_COMM_PROTOCOL */ 
        RFDEVICE_COMM_PROTO_VERSION_DEFAULT, /* PHY_DEVICE_COMM_PROTOCOL_VERSION */ 
        {
            1,0 /* 0 not specified */,}, /* PHY_DEVICE_COMM_BUS */ 
        0x3F3, /* PHY_DEVICE_MANUFACTURER_ID */ 
        0x96, /* PHY_DEVICE_PRODUCT_ID */ 
        0, /* PHY_DEVICE_PRODUCT_REV */ 
        0xE, /* DEFAULT USID RANGE START */
        0xE, /* DEFAULT USID RANGE END */
        0xE, /* PHY_DEVICE_ASSIGNED_USID */ 
        0 /*Warning: Not specified*/, /* RFFE_GROUP_ID */ 
        FALSE, /* INIT */ 
        RFC_INVALID_PARAM, /* ASSOCIATED_DAC */ 
      }, /* END - Device: ASM_RR88916 */
    
      {
         /*Device: PA_RR88643 */ 
        GEN_DEVICE /* ASM_RR88643 */, /* PHY_DEVICE_NAME */ 
        3, /* PHY_DEVICE_INSTANCE */ 
        RFC_NO_ALTERNATE_PART, /* PHY_DEVICE_ALT_PART_NUM_OF_INSTANCE */ 
        RFDEVICE_COMM_PROTO_RFFE, /* PHY_DEVICE_COMM_PROTOCOL */ 
        RFDEVICE_COMM_PROTO_VERSION_DEFAULT, /* PHY_DEVICE_COMM_PROTOCOL_VERSION */ 
        {
            1,0 /* 0 not specified */,}, /* PHY_DEVICE_COMM_BUS */ 
        0x3F3, /* PHY_DEVICE_MANUFACTURER_ID */ 
        0x2D, /* PHY_DEVICE_PRODUCT_ID */ 
        0, /* PHY_DEVICE_PRODUCT_REV */ 
        0xF, /* DEFAULT USID RANGE START */
        0xF, /* DEFAULT USID RANGE END */
        0xF, /* PHY_DEVICE_ASSIGNED_USID */ 
        0 /*Warning: Not specified*/, /* RFFE_GROUP_ID */ 
        FALSE, /* INIT */ 
        RFC_INVALID_PARAM, /* ASSOCIATED_DAC */ 
      }, /* END - Device: ASM_RR88643 */ 
      
      {
         /*Device: RFDEVICE_INVALID */ 
        RFDEVICE_INVALID, /* PHY_DEVICE_NAME */ 
        0 /*Warning: Not specified*/, /* PHY_DEVICE_INSTANCE */ 
        0 /*Warning: Not specified*/, /* PHY_DEVICE_ALT_PART_NUM_OF_INSTANCE */ 
        RFDEVICE_COMM_PROTO_INVALID, /* PHY_DEVICE_COMM_PROTOCOL */ 
        RFDEVICE_COMM_PROTO_VERSION_DEFAULT, /* PHY_DEVICE_COMM_PROTOCOL_VERSION */ 
        {
            0 /* 0 not specified */,0 /* 0 not specified */,}, /* PHY_DEVICE_COMM_BUS */ 
        0 /*Warning: Not specified*/, /* PHY_DEVICE_MANUFACTURER_ID */ 
        0 /*Warning: Not specified*/, /* PHY_DEVICE_PRODUCT_ID */ 
        0 /*Warning: Not specified*/, /* PHY_DEVICE_PRODUCT_REV */ 
        0 /*Warning: Not specified*/, /* DEFAULT USID RANGE START */
        0 /*Warning: Not specified*/, /* DEFAULT USID RANGE END */
        0 /*Warning: Not specified*/, /* PHY_DEVICE_ASSIGNED_USID */ 
        0 /*Warning: Not specified*/, /* RFFE_GROUP_ID */ 
        FALSE, /* INIT */ 
        RFC_INVALID_PARAM, /* ASSOCIATED_DAC */ 
      }, /* END - Device: RFDEVICE_INVALID */ 
    };
    
    //逻辑设备
    rfc_logical_device_info_type rfc_sdr105_riot_cls3_9x05_logical_devices_list[] = 
    {
        
      {
         /*Device: SDR105 RF*/ 
        RFDEVICE_TRANSCEIVER, /* DEVICE_MODULE_TYPE */ 
        SDR105, /* DEVICE_MODULE_NAME */ 
        0, /* DEVICE_MODULE_TYPE_INSTANCE */   //这个是在对应的band的tx和rx rfc_device_info_type中配置用的： 
        									   //比如：rf_card_sdr105_riot_cls3_9x05_rx0_lte_b1_device_info
        0, /* ASSOCIATED_PHY_DEVICE_INSTANCE */  //对应到上面的0, /* PHY_DEVICE_INSTANCE */  就是SDR105 transceiver
      }, /* END - Device: SDR105 */ 
    
      {
         /*Device: SDR105 NB_CATM_PA */ 
        RFDEVICE_ASM, /* DEVICE_MODULE_TYPE */ 
        GEN_ASM /* GSM_PA */, /* DEVICE_MODULE_NAME */  
        0, /* DEVICE_MODULE_TYPE_INSTANCE */ 
        1, /* ASSOCIATED_PHY_DEVICE_INSTANCE */  //对应到上面的1, /* PHY_DEVICE_INSTANCE */  就是SDR105 FE
      }, /* END - Device: NB_CATM_PA */ 
    
      {
         /*Device: GSM_PA */ 
        RFDEVICE_PA, /* DEVICE_MODULE_TYPE */ 
        GEN_PA /* GSM_PA */, /* DEVICE_MODULE_NAME */ 
        0, /* DEVICE_MODULE_TYPE_INSTANCE */   //第0个逻辑PA设备
        2, /* ASSOCIATED_PHY_DEVICE_INSTANCE */  //对应到上面的2, /* PHY_DEVICE_INSTANCE */  就是ASM_RR88916
      }, /* END - Device: GSM_PA */ 
    
      {
         /*Device: ASM_SP6T */ 
        RFDEVICE_ASM, /* DEVICE_MODULE_TYPE */ 
        GEN_ASM /* ASM_SP6T */, /* DEVICE_MODULE_NAME */ 
        1, /* DEVICE_MODULE_TYPE_INSTANCE */ 
        2, /* ASSOCIATED_PHY_DEVICE_INSTANCE */ //还是对应到上面的2, /* PHY_DEVICE_INSTANCE */  就是ASM_RR88916
      }, /* END - Device: ASM_SP6T */ 
    
      {
         /*Device: LTE PA */ 
        RFDEVICE_PA, /* DEVICE_MODULE_TYPE */ 
        GEN_PA /* IOTFE */, /* DEVICE_MODULE_NAME */ 
        1, /* DEVICE_MODULE_TYPE_INSTANCE */  //第1个逻辑PA设备
        3, /* ASSOCIATED_PHY_DEVICE_INSTANCE */ //对应到上面的3, /* PHY_DEVICE_INSTANCE */  就是PA_RR88643
      }, /* END - Device: IOTFE */ 
    
      {
         /*Device: TRX_HDET */ 
        RFDEVICE_HDET, /* DEVICE_MODULE_TYPE */ 
        TRX_HDET, /* DEVICE_MODULE_NAME */ 
        0, /* DEVICE_MODULE_TYPE_INSTANCE */ 
        0, /* ASSOCIATED_PHY_DEVICE_INSTANCE */ 
      }, /* END - Device: TRX_HDET */ 
    
      {
         /*Device: RFDEVICE_INVALID */ 
        RFDEVICE_TYPE_INVALID, /* DEVICE_MODULE_TYPE */ 
        RFDEVICE_INVALID, /* DEVICE_MODULE_NAME */ 
        0 /*Warning: Not specified*/, /* DEVICE_MODULE_TYPE_INSTANCE */ 
        0 /*Warning: Not specified*/, /* ASSOCIATED_PHY_DEVICE_INSTANCE */ 
      }, /* END - Device: RFDEVICE_INVALID */ 
    
    };

用QFDT可以扫描到4个设备：

File Size = 204
    File Version = 2
    RFHW ID = 540
    Number of Device Instances = 4
    Number of Device Instances Present = 4
    Error Code = 0
    
    Dev Inst, BUS, MID,        PID,           P_REV, USID, Status
    =============================================================
    0  ,0  ,QUALCOMM(0x217), (0xC6)              , 0x1,0x9,PRESENT
    1  ,1  ,QUALCOMM(0x217), (0xC7)              , 0x1,0xA,PRESENT
    2  ,1  ,(0x3F3)        , (0x96)              , 0x0,0xE,PRESENT
    3  ,1  ,(0x3F3)        , (0x2D)              , 0x0,0xF,PRESENT

可以看到，PID为0xC6的是SDR的RF（transceiver），在RFFE1上，这里的( 1 | RFC\_SKIP\_RFFE\_DETECT\_BIT\_IND )并没有skip掉的。  
PID为0xC7的是SDR的FE（射频前端，PA和ASM），在RFFE2上。  
88916和88643都是接在RFFE2上的。

逻辑设备中，有两个PA设备，分别对应到物理设备的ASM\_RR88916（GSM的PA）和PA\_RR88643，并没有用到SDR105的PA功能。  
ASM设备也有两个，分别对应物理设备的SDR105 ASM和ASM\_RR88916。

**收发通路分析**  
以band1的发射为例：

rfc_device_info_type rf_card_sdr105_riot_cls3_9x05_tx0_lte_b1_device_info = 
    {
        
      RFC_ENCODED_REVISION, 
      RFC_TX_MODEM_CHAIN_0,   /* Modem Chain */
      0,   /* NV Container */
      0,   /* Antenna */
      4,  /* NUM_DEVICES_TO_CONFIGURE */
      {
        
      
        {
        
          RFDEVICE_TRANSCEIVER,
          SDR105,  /* NAME */
          0,  /* DEVICE_MODULE_TYPE_INSTANCE */
          0,  /* PHY_PATH_NUM */
          {
        
            0 /*Warning: Not specified*/,  /* INTF_REV */
            (int)SDR105_LTE_BAND1_TX_MB2_GSM,  /* PORT */
            ( RFDEVICE_PA_LUT_MAPPING_VALID | SDR105_LP_LUT_TYPE << RFDEVICE_PA_STATE_0_BSHFT | SDR105_HP_LUT_TYPE << RFDEVICE_PA_STATE_1_BSHFT | SDR105_HP_LUT_TYPE << RFDEVICE_PA_STATE_2_BSHFT | SDR105_HP_LUT_TYPE << RFDEVICE_PA_STATE_3_BSHFT ),  /* RF_ASIC_BAND_AGC_LUT_MAPPING */
            FALSE,  /* TXAGC_LUT */
            0,  /* FBRX_ATTN_STATE */
            0,  /* Array Filler */
          },
        },
    
        {
        
          RFDEVICE_PA,
          GEN_PA /* NB_CATM_PA */,  /* NAME */
          1,  /* DEVICE_MODULE_TYPE_INSTANCE */
          0 /*Warning: Not specified*/,  /* PHY_PATH_NUM */
          {
        
            0  /* Orig setting:  */,  /* INTF_REV */
            (0x03F3 << 22)/*mfg_id*/ | (0x2D << 14)/*prd_id*/ | (0)/*port_num*/,  /* PORT_NUM */
            0,  /* Array Filler */
            0,  /* Array Filler */
            0,  /* Array Filler */
            0,  /* Array Filler */
          },
        },
        
        {
        
          RFDEVICE_ASM,
          GEN_ASM /* ASM_SP6T */,  /* NAME */
          1,  /* DEVICE_MODULE_TYPE_INSTANCE */
          0 /*Warning: Not specified*/,  /* PHY_PATH_NUM */
          {
        
            0  /* Orig setting:  */,  /* INTF_REV */
            (0x03F3 << 22)/*mfg_id*/ | (0x96 << 14)/*prd_id*/ | (6)/*port_num*/,  /* PORT_NUM */
            (0x03F3 << 22)/*mfg_id*/ | (0x96 << 14)/*prd_id*/ | (6)/*port_num*/,  /* PORT_NUM */
            0,  /* Array Filler */
            0,  /* Array Filler */
            0,  /* Array Filler */
          },
        },
        
        {
        
          RFDEVICE_HDET,
          TRX_HDET,  /* NAME */
          0,  /* DEVICE_MODULE_TYPE_INSTANCE */
          0 /*Warning: Not specified*/,  /* PHY_PATH_NUM */
          {
        
            0  /* Orig setting:  */,  /* INTF_REV */
            0,  /* Array Filler */
            0,  /* Array Filler */
            0,  /* Array Filler */
            0,  /* Array Filler */
            0,  /* Array Filler */
          },
        },
        
      },
    };

band1的接收：

rfc_device_info_type rf_card_sdr105_riot_cls3_9x05_rx0_lte_b1_device_info = 
    {
        
      RFC_ENCODED_REVISION, 
      RFC_RX_MODEM_CHAIN_0,   /* Modem Chain */
      0,   /* NV Container */
      0,   /* Antenna */
      3,  /* NUM_DEVICES_TO_CONFIGURE */
      {
        
        {
        
          RFDEVICE_TRANSCEIVER,
          SDR105,  /* NAME */
          0,  /* DEVICE_MODULE_TYPE_INSTANCE */
          0,  /* PHY_PATH_NUM */
          {
        
            0 /*Warning: Not specified*/,  /* INTF_REV */
            (int)SDR105_LTE_BAND1_MB_LNA_IN,  /* PORT */
            ( RFDEVICE_RX_GAIN_STATE_MAPPING_INVALID ),  /* RF_ASIC_BAND_AGC_LUT_MAPPING */
            FALSE,  /* TXAGC_LUT */
            0,  /* FBRX_ATTN_STATE */
            0,  /* Array Filler */
          },
        },
        
        {
        
          RFDEVICE_ASM,
          GEN_ASM /* IOTFE */,  /* NAME */
          1,  /* DEVICE_MODULE_TYPE_INSTANCE */
          0 /*Warning: Not specified*/,  /* PHY_PATH_NUM */
          {
        
            0  /* Orig setting:  */,  /* INTF_REV */
            (0x03F3 << 22)/*mfg_id*/ | (0x96 << 14)/*prd_id*/ | (10)/*port_num*/,  /* PORT_NUM */
            0,  /* Array Filler */
            0,  /* Array Filler */
            0,  /* Array Filler */
            0,  /* Array Filler */
          },
        },
          
        {
        
          RFDEVICE_ASM,
          GEN_ASM /* IOTFE_ASM */,  /* NAME */
          0,  /* DEVICE_MODULE_TYPE_INSTANCE */
          0 /*Warning: Not specified*/,  /* PHY_PATH_NUM */
          {
        
            0  /* Orig setting:  */,  /* INTF_REV */
            (0X217 << 22)/*mfg_id*/ | (0xC7 << 14)/*prd_id*/ | (7)/*port_num*/,  /* PORT_NUM */
            0,  /* Array Filler */
            0,  /* Array Filler */
            0,  /* Array Filler */
            0,  /* Array Filler */
          },
        },
        
      },
    };

如果想使用别的PA，比如展锐的RPM6818-11，可以修改PA的物理设备如下：

{
         /*Device: PA RPM6818 */ 
        GEN_DEVICE /* ASM_RR88643 */, /* PHY_DEVICE_NAME */ 
        2, /* PHY_DEVICE_INSTANCE */   //根据实际的设备个数编排
        RFC_NO_ALTERNATE_PART, /* PHY_DEVICE_ALT_PART_NUM_OF_INSTANCE */ 
        RFDEVICE_COMM_PROTO_RFFE, /* PHY_DEVICE_COMM_PROTOCOL */ 
        RFDEVICE_COMM_PROTO_VERSION_DEFAULT, /* PHY_DEVICE_COMM_PROTOCOL_VERSION */ 
        {
            1,0 /* 0 not specified */,}, /* PHY_DEVICE_COMM_BUS */ 
        0x29A, /* PHY_DEVICE_MANUFACTURER_ID */ 
        0x20, /* PHY_DEVICE_PRODUCT_ID */ 
        0, /* PHY_DEVICE_PRODUCT_REV */ 
        0xF, /* DEFAULT USID RANGE START */
        0xF, /* DEFAULT USID RANGE END */
        0xF, /* PHY_DEVICE_ASSIGNED_USID */ 
        0 /*Warning: Not specified*/, /* RFFE_GROUP_ID */ 
        FALSE, /* INIT */ 
        RFC_INVALID_PARAM, /* ASSOCIATED_DAC */ 
      }, /* END - Device: ASM_RR88643 */

注意MIPI的data和clk不要接反，扫描正确的数据如下：

File Size = 160
    File Version = 2
    RFHW ID = 540
    Number of Device Instances = 3
    Number of Device Instances Present = 3
    Error Code = 0
    
    Dev Inst, BUS, MID,        PID,           P_REV, USID, Status
    =============================================================
    0  ,0  ,QUALCOMM(0x217), (0xC6)              , 0x1,0x9,PRESENT
    1  ,1  ,QUALCOMM(0x217), (0xC7)              , 0x1,0xA,PRESENT
    2  ,1  ,(0x29A)        , (0x20)              , 0x0,0xF,PRESENT

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