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7.3.6 WCDMA Calibration Items
A. TX Linearity Calibration
- Purpose
This item contains the TX_AGC_ADJ PDM values that make up the Tx Master Linearizer for low (or
high) PA gain state (PA Range 0 or 1). The linearizer is made up of 37 values for 37 equally spaced Tx
power levels, 33 points over the phone true dynamic range, 2 points on the high side of the dynamic
range, and 2 points on the low side of the dynamic range. These values represent 9 bits unsigned
PDM values (0 to 511) that produce the correct Tx AGC amplifier gain corresponding to the transmit
power of interest (see Figure 7-2).
- Procedure Proposal
1. Set phone in WCDMA mode.
2. Set phone to a reference channel.
3. Set the spectrum analyzer to that reference channel’s frequency.
4. Turn on PA.
5. Set PA to low-gain (or high-gain) state.
6. Turn on WCDMA Tx waveform.
7. Adjust TX_AGC_ADJ PDM for each of the 32 (start at index = 2) Tx power levels (Dynamic
Range/32)
8. Extrapolate for the 2 lowest power points and 2 highest power points, index = 0, 1, ...¶ 35, 36
9. At each power level (i) store TX_AGC_ADJ PDM in item
NV_WCDMA_TX_LIN_MASTER0[i]
NOTE Index zero (0) is the lowest Tx power.
7. CALIBRATION
- 180 -
Figure 7-2. TX_AGC_ADJ PDM values
Summary of Contents for U8210
Page 22: ...3 TECHNICAL BRIEF 23 Figure 3 2 1 1 RTR6250 IC Functional Block Diagram ...
Page 37: ...3 TECHNICAL BRIEF 38 Figure 3 5 12 1 Bluetooth system architecture ...
Page 110: ...4 TROUBLE SHOOTING 111 USB_D USB_D USB_VBUS X100 48M 48MHz ...
Page 115: ...4 TROUBLE SHOOTING 116 LCD Control data flow ...
Page 117: ...4 TROUBLE SHOOTING 118 LCD Control data flow ...
Page 122: ...4 TROUBLE SHOOTING 123 TR400 ...
Page 124: ...4 TROUBLE SHOOTING 125 FLASH_ON from Main Bíd PM6650 CN1 Flash LED ...
Page 127: ...4 TROUBLE SHOOTING 128 FB503 CN500 FB502 CN2 CN1 ...
Page 129: ...4 TROUBLE SHOOTING 130 C627 Head_set Output Pin 4 5 C626 CN304 R624 ...
Page 131: ...4 TROUBLE SHOOTING 132 R649 CN300 CN2 CN1 U605 C633 R648 C634 R622 R623 ...
Page 133: ...4 TROUBLE SHOOTING 134 R649 CN300 CN2 CN1 U605 C633 R648 C634 R622 R623 ...
Page 135: ...4 TROUBLE SHOOTING 136 C627 Head_set Output Pin 4 5 C626 CN304 R624 ...
Page 137: ...4 TROUBLE SHOOTING 138 R649 CN300 CN2 CN1 U605 C633 R648 C634 R622 R623 ...
Page 139: ...4 TROUBLE SHOOTING 140 C627 Head_set Output Pin 4 5 C626 CN304 R624 ...
Page 141: ...4 TROUBLE SHOOTING 142 MIC Contact C404 C401 ...
Page 143: ...4 TROUBLE SHOOTING 144 C115 Head_Phone Input Pin 2 3 C102 CN304 R624 ...
Page 146: ...4 TROUBLE SHOOTING 147 Receptacle 4 6V 4 6V ...
Page 151: ...5 BLOCK DIAGRAM 152 Top Side ...
Page 152: ...5 BLOCK DIAGRAM 153 Bottom Side ...
Page 154: ...6 DOWNLOAD 155 It is ready for downloading ...
Page 160: ...6 DOWNLOAD 161 6 Click on Download to download ...
Page 165: ...6 DOWNLOAD 166 Downloading the Module image Finally Download has been complete ...
Page 168: ...6 DOWNLOAD 169 When you meet the NV Restore error Connect to the phone ...
Page 170: ...6 DOWNLOAD 171 Select the proper file and click on Restore Reading the NV file and restore NV ...
Page 200: ... 201 9 PCB LAYOUT ...
Page 201: ... 202 9 PCB LAYOUT ...
Page 202: ... 203 9 PCB LAYOUT U8210 KEYPAD SPEY0032001 1 1 TOP ...
Page 203: ... 204 9 PCB LAYOUT ...
Page 204: ... 205 9 PCB LAYOUT ...
Page 206: ... 207 ...
Page 207: ... 208 ...