ucb1200 NXP Semiconductors, ucb1200 Datasheet - Page 10

• Manufacturer Part Number: ucb1200
• Description: Advanced Modem/audio Analog Front-end
• Manufacturer: NXP Semiconductors

Philips Semiconductors
The audio input and output path are activated independently; the input path is enabled when AUDIO_IN_ENA is set, the
output path is enabled when AUD_OUT_ENA is set in the audio control register B. This provides the user the means to
reduce the current consumption of the UCB1200 if one part of the audio codec is not used in the application.
The audio codec has a loopback mode for system test purposes, which is activated when the AUDIO_LOOP bit in the
audio control register B is set. This is an analog loopback which internally connects the output of the audio output path
to the input of the audio input path, (see Fig.3). In this mode the normal microphone input is ignored, but the speaker
driver can be operated normally.
1998 Jul 22
Advanced modem/audio analog front-end
BRIDGE TIED
SPEAKER LOAD
UCB1200
SPKRP
9
8
SPKRN
+
UCB1200
Fig.6 Possible speaker connections.
SINGLE ENDED SPEAKER CONNECTIONS
SPKRP
9
8
SPKRN
+
10
UCB1200
SPKRP
9
8
SPKRN
+
Product specification
UCB1200
+