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(2) Checking TX IQ
TEST POINT
U502
Figure 4-19.
CIRCUIT
502
210D
CIRCUIT
C523
C526
C520
C521
C522
22p
0.1u
100p
XOUT
8
BIP
7
BIN
6
BQP
5
BQN
4
SDIO
3
_SEN
2
SC
Figure 4-20.
Check if there is
Any Major Difference
Refer to Graph7
Redownload the Software
And calibrate
Figure 4-21.
4. TROUBLE SHOOTING
WAVEFORM
Graph 4-7.
C523
39p
C526
39p
No
Replace U101
Similar?
Yes
- 85 -
IP
IN
QP
QN
(GPO_20)
S_DATA
(GPO_19)
S_EN
(GPO 21)
S CLK
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