Motorola M3097 Service Manual Page 109

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TDMA M3090/M3097: GCAP2 (U1500)
B26
Description
The GCAP2(U1500) provides the regulators and start-up functions for the entire radio. The GCAP2 contains the following hardware
blocks:
On/Off control signals to properly activate the radio.
Bandgap reference voltage
Audio amplification for the speaker
Audio amplification for the alert
Audio amplification for the EXT speaker
Audio amplification of the microphone
Audio CODEC
Op-amps for use in the battery charger
Internal D/A for the battery charger
8 channel, 8 bit A/D
Real Time Clock
Linear regulators
- RX_2.75V for RX circuits
- 2.75V for logic circuits
- TX_2.75V for TX circuits
- 5V for negative regulator
- REF_2.75V for negative regulator reference
3 wire bus A/D
Battery selection control circuitry
BLOCK DIAGRAM NOT NECESSARY
REFER TO PAGE B27
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