3. TECHNICAL BRIEF
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3.8. Subsystem(MSM6280)
3.8.1. ARM Microprocessor Subsystem
The MSM6280 device uses an embedded ARM926EJ-S microprocessor. This microprocessor,
through the system software, controls most of the functionality for the MSM, including control of the
external peripherals such as the keypad, LCD, SDRAM, and NAND-Flash devices. Through a
QUALCOMM proprietary serial bus interface (SBI) the ARM926EJ-S configures and controls the
functionality of the RTR6275, RFR6275 and PM6650 devices.
3.8.2. WCDMA R99 features
The MSM6280 device supports release 99 June 2004 of the W-CDMA FDD standard, including the
following features:
• All modes and data rates for W-CDMA frequency division duplex (FDD), with the following
restrictions:
• The downlink supports the following specifications:
- Up to four physical channels, including the broadcast channel (BCH), if present
- Up to three dedicated physical channels (DPCHs)
- Spreading factor (SF) range support from 4 to 256
- The following transmit diversity modes are supported:
Space time transmit diversity (STTD)
Time-switched transmit diversity (TSTD)
Closed-loop feedback transmit diversity (CLTD)
• The uplink supports the following specifications:
• The uplink provides the following UE support:
- One physical channel, eight TrCH, and 16 TrBks starting at any frame boundary
- A maximum data rate of 384 kbps
• Full SF range support from 4 to 256
• SMS (CS and PS)
• PS data rate - 384 kbps DL / 384 kbps UL
• CS data rate - 64 kbps DL / 64 kbps UL
• AMR (all rates)
3.8.3. HSDPA features
The MSM6280 device supports the HSDPA release 5 standard:
• Supports HS-DSCH (HS-SCCH, HS-PDSCH and HS-DPCCH) in addition to the R99 transport
channels as defined in 3GPP specifications.
• Supports a maximum of four simultaneous HS-SCCH channels as defined in 3GPP specifications.
• Supports a maximum of 10 HS-PDSCH channels and supports both QPSK and 16 QAM modulation.
It supports UE category 6 in SW release 2.0 and category 8 in SW release 4.0.
• Supports CQI, and ACK/NACK on HS-DPCCH channel as defined in 3GPP specifications.
• Supports all incremental redundancy versions for HARQ, as defined in 3GPP specifications.
Содержание U970
Страница 1: ...Date April 2007 Issue 1 0 Service Manual Model U970 KU970 Service Manual U970 KU970 ...
Страница 3: ... 4 ...
Страница 20: ...3 TECHNICAL BRIEF 21 Fig 1 2 RTR6275 RX feature ...
Страница 23: ...3 TECHNICAL BRIEF 24 Figure 1 4 RTR6275 IC functional block diagram WCDMA_2100_TX WCDMA_2100_RX ...
Страница 28: ...3 TECHNICAL BRIEF 29 Figure1 7 PM6650 Block Diagram ...
Страница 41: ...3 TECHNICAL BRIEF 42 Table 1 1 Summary of MSM6280 device features ...
Страница 45: ...3 TECHNICAL BRIEF 46 Figure 1 1 PM6650 Functional Block Diagram ...
Страница 76: ...4 TROUBLE SHOOTING 77 4 1 RF CRF Component TOP SIDE BOTTOM SIDE 4 TROUBLE SHOOTING ...
Страница 81: ...4 TROUBLE SHOOTING 82 Check C412 of PMIC U400 Check R214 of MSM U200 ...
Страница 83: ...4 TROUBLE SHOOTING 84 Logic Table of the FEM ...
Страница 89: ...4 TROUBLE SHOOTING 90 4 7 Checking GSM Block ...
Страница 91: ...4 7 3 Checking RF Tx level 4 TROUBLE SHOOTING 92 ...
Страница 94: ...4 TROUBLE SHOOTING 95 ...
Страница 100: ...4 TROUBLE SHOOTING 101 R403 Q402 Q401 Q400 Charging part Main PCB Front ...
Страница 103: ...4 TROUBLE SHOOTING 104 Q400 X 200 USB part 1 Main PCB Front U503 USB part 2 Main PCB Rear ...
Страница 112: ...4 TROUBLE SHOOTING 113 CN601 CN701 CN700 ...
Страница 115: ...4 TROUBLE SHOOTING 116 C500 C501 R501 R502 ...
Страница 117: ...4 TROUBLE SHOOTING 118 SPK Audio Amplifier Analog Switch ...
Страница 119: ...4 TROUBLE SHOOTING 120 MIC800 R507 C520 ...
Страница 121: ...4 TROUBLE SHOOTING 122 R303 Ear_Sense_N C210 MIC Input ...
Страница 141: ...5 DOWNLOAD 142 ...
Страница 147: ...5 DOWNLOAD 148 Read IMEI BT address from UE 2 Step 4 Check IMEI and Bluetooth address ...
Страница 158: ...6 BLOCK DIAGRAM 159 Table 2 1 RF Block Component ...
Страница 163: ...6 BLOCK DIAGRAM 164 6 2 4 Placement Top Side ...
Страница 164: ...6 BLOCK DIAGRAM 165 Bottom Side ...
Страница 165: ... 166 ...
Страница 175: ... 176 8 PCB LAYOUT U970 KU970 ...
Страница 176: ... 177 8 PCB LAYOUT U970 KU970 ...
Страница 177: ... 178 8 PCB LAYOUT U970 KU970 ...
Страница 178: ... 179 8 PCB LAYOUT U970 KU970 ...
Страница 179: ... 180 8 PCB LAYOUT ...
Страница 180: ... 181 8 PCB LAYOUT ...
Страница 181: ... 182 ...
Страница 187: ... 188 ...
Страница 189: ... 190 ...
Страница 209: ...Note ...
Страница 210: ...Note ...