3. TECHNICAL BRIEF
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3.1.3 External memory interface
There are four independent chip selects (CS0, CS1, CS2, CS3) provided for external memories and
each has an address range of 256 Mb.
RF calibration data, Audio parameters and battery calibration data etc are stored in flash memory
area.
• 512Mb flash 64Mb PSRAM
• 3-CS(Chip Select) are used
Interface Spec.
Read Access Time
Write
Device
Part Name
Maker
Access
Async
Page
Burst
Time
MCP
RD38F4050L0YTQ0
Intel
85 ns
25 ns
14 ns
85 ns
at 54MHz
FLASH
NZ48F4000L0YBQ0
Intel
85 ns
25 ns
14 ns
85 ns
at 54MHz
PSRAM
RD38F4050L0YTQ0
Intel
85 ns
25 ns
10 ns
85 ns
at 66MHz
Table External memory interface for U8130
Summary of Contents for U8138
Page 1: ...Service Manual Model U8138 Service Manual U8138 P N MMBD0042101 Date November 2004 Issue 1 0 ...
Page 52: ...3 TECHNICAL BRIEF 53 Figure Audio Section scheme ...
Page 62: ...3 TECHNICAL BRIEF 63 Figure TJATTE2 Block Diagram ...
Page 90: ...4 TROUBLE SHOOTING 91 4 1 Power ON Trouble 4 TROUBLE SHOOTING ...
Page 91: ...4 TROUBLE SHOOTING 92 Main Board Bottom side Main Board Top side ...
Page 92: ...4 TROUBLE SHOOTING 93 4 2 USB Trouble ...
Page 95: ...4 TROUBLE SHOOTING 96 4 5 Camera Trouble Camera control signals are generated by Marita ...
Page 96: ...4 TROUBLE SHOOTING 97 Camera control signals are generated by Marita ...
Page 97: ...4 TROUBLE SHOOTING 98 4 6 Main LCD Trouble LCD control signals are generated by Marita ...
Page 98: ...4 TROUBLE SHOOTING 99 4 7 Sub LCD Trouble ...
Page 99: ...4 TROUBLE SHOOTING 100 4 8 Keypad Backlight Trouble ...
Page 101: ...4 TROUBLE SHOOTING 102 4 9 Folder ON OFF Trouble ...
Page 102: ...4 TROUBLE SHOOTING 103 Be sure that magnet is here ...
Page 103: ...4 TROUBLE SHOOTING 104 4 10 Camera Detection Trouble ...
Page 104: ...4 TROUBLE SHOOTING 105 ...
Page 105: ...4 TROUBLE SHOOTING 106 4 11 Camera Flash Trouble ...
Page 106: ...4 TROUBLE SHOOTING 107 ...
Page 108: ...4 TROUBLE SHOOTING 109 ...
Page 109: ...4 TROUBLE SHOOTING 110 ...
Page 110: ...4 TROUBLE SHOOTING 111 Measured 1khz Sine Wave Signal Measured 1khz Sine Wave Signal ...
Page 112: ...4 TROUBLE SHOOTING 113 ...
Page 113: ...4 TROUBLE SHOOTING 114 ...
Page 114: ...4 TROUBLE SHOOTING 115 Measured 1khz Sine Wave Signal ...
Page 116: ...4 TROUBLE SHOOTING 117 ...
Page 117: ...4 TROUBLE SHOOTING 118 ...
Page 118: ...4 TROUBLE SHOOTING 119 Measured Some Noise Signal ...
Page 119: ...4 TROUBLE SHOOTING 120 D Headset Receiver Voice call Video Telephony MP3 ...
Page 120: ...4 TROUBLE SHOOTING 121 E Headset MIC Voice call Video Telephony ...
Page 121: ...4 TROUBLE SHOOTING 122 ...
Page 123: ...4 TROUBLE SHOOTING 124 Figure 14 Trouble Shooting Charging ...
Page 124: ...4 TROUBLE SHOOTING 125 Figure 15 Main Board I O connector and FET ...
Page 127: ...4 TROUBLE SHOOTING 128 4 15 Procedure to check ...
Page 133: ...4 TROUBLE SHOOTING 134 Step 4 Check R1631 in WCDMA PAM block ...
Page 134: ...4 TROUBLE SHOOTING 135 Figure 4 8 Power for Radio ASIC ...
Page 140: ...4 TROUBLE SHOOTING 141 ...
Page 145: ...4 TROUBLE SHOOTING 146 A EGSM Rx Mode Figure 4 21 EGSM Rx Mode ...
Page 146: ...4 TROUBLE SHOOTING 147 B EGSM Tx Mode Figure 4 22 EGSM Tx Mode ...
Page 147: ...4 TROUBLE SHOOTING 148 C DCS Rx Mode Figure 4 23 DCS Rx Mode ...
Page 148: ...4 TROUBLE SHOOTING 149 D DCS Tx Mode Figure 4 24 DCS Tx Mode ...
Page 149: ...4 TROUBLE SHOOTING 150 E WCDMA Mode Figure 4 25 WCDMA Mode ...
Page 150: ...4 TROUBLE SHOOTING 151 4 20 Checking WCDMA Block ...
Page 152: ...4 TROUBLE SHOOTING 153 Figure 4 30 Connection for Checking Control Signal ...
Page 153: ...4 TROUBLE SHOOTING 154 Figure 4 30 Control signal ...
Page 154: ...4 TROUBLE SHOOTING 155 4 20 4 Checking RF TX Level Figure 4 31 Test Point RF TX Level ...
Page 155: ...4 TROUBLE SHOOTING 156 Figure 4 32 Connection for Checking RF TX Level ...
Page 156: ...4 TROUBLE SHOOTING 157 To verify that the phone fulfils requirements on maximum output power ...
Page 162: ...4 TROUBLE SHOOTING 163 Figure 4 36 RX I Q signal ...
Page 164: ...4 TROUBLE SHOOTING 165 ...
Page 165: ...4 21 Checking GSM Block 4 TROUBLE SHOOTING 166 ...
Page 168: ...4 TROUBLE SHOOTING 169 ...
Page 170: ...4 TROUBLE SHOOTING 171 Figure 4 41 Test Point of GSM DCS Tx path ...
Page 173: ...D GSM PAM Check 4 TROUBLE SHOOTING 174 Figure 4 44 GSM DCS Tx control signal ...
Page 178: ...4 TROUBLE SHOOTING 179 C GSM RF Level Check Figure 4 49 GSM DCS Rx Path ...
Page 179: ...5 1 GSM WCDMA RF Block 5 BLOCK DIAGRAM 180 5 BLOCK DIAGRAM Figure 5 1 RF Block Diagram ...
Page 181: ...5 2 Interface Diagram 5 BLOCK DIAGRAM 182 Figure 5 2 Interface Diagram 1 ...
Page 183: ...5 3 Detailed Interface Signal 5 BLOCK DIAGRAM 184 Figure 5 3 Interface Diagram 2 ...
Page 184: ...5 BLOCK DIAGRAM 185 Figure 5 4 Power Diagram ...
Page 185: ...6 DISASSEMBLY INSTRUCTION 186 6 DISASSEMBLY INSTRUCTION ...
Page 186: ...6 DISASSEMBLY INSTRUCTION 187 ...
Page 187: ...6 DISASSEMBLY INSTRUCTION 188 ...
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Page 191: ...6 DISASSEMBLY INSTRUCTION 192 ...
Page 192: ...6 DISASSEMBLY INSTRUCTION 193 ...
Page 233: ...8 CALIBRATION 234 Figure 8 16 Calibration Result from STATUS Tab View ...
Page 243: ... 244 10 PCB LAYOUT ...
Page 244: ... 245 10 PCB LAYOUT ...
Page 245: ... 246 10 PCB LAYOUT ...
Page 246: ... 247 10 PCB LAYOUT ...
Page 247: ... 248 11 EXPLODED VIEW REPLACEMENT PART LIST 11 1 EXPLODED VIEW ...
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Page 271: ...Memo 272 ...