Serial Audio Port Waveforms; Secure Interface Waveforms - Motorola ASTRO XTL 1500 Detailed Service Manual

6-10

6.2.17 Serial Audio Port Waveforms

6.2.18 Secure Interface Waveforms

Ch1
Ch3
June 15, 2005
Transmitting
1 kHz tone at 85mVrms into microphone
Trace 1 — Frame Sync — SAP_FSYNC
Trace 2 — Clock — SAP_DCLK
Trace 3 — Data — SAP_TX
Ch2 2.00V
2.00V
2.00V Ch4 2.00V
Receiving
1 kHz tone at 3 kHz Dev, -47dBm Secure Mode
Trace 1 — J0501 — 1 - SAP TX
Trace 2 — J0501 — 2 - SAP RX
Trace 3 — J0501 — 3 - SAP DCLK
Troubleshooting Waveforms: XTL 1500 Waveforms
MAEPF-27864-O
M 20.00us Ch3 1.20V
MAEPF-27865-O
C1 Freq
~8kHz
J0501-1
SAP_TX
J0501-2
SAP_RX
J0501-4
SAP_FSYNC
J0501-3
SAP_DCLK
6815854H01-A