User Guide
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Troubleshooting PAMS Technical Documentation
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In general, if phone is not in a sleep mode, Hagar chip is always active.
This means that, as long as we have set the phone in Normal mode or in Local mode (either RX or TX
band ) there is going to be some Hagar activities, which is controled through serial interface
(SDATA,SCLK,SENA and HAGAR_RESET_X).
Pictures below show these four signals, measured on R301 (both SCLK and SENA) , on R300
(SDATA) and C540 (HAGAR_RESET_X). R301 and R300 are placed in BB part.
Figure 3. SCLK - clock signal Figure 4. SENA - enable signal
Figure 5. SDATA - data signal
Figure 6. HAGAR_RESET_X - hagar reset "on"