Pcap; Pog; Pog Interfaces - Motorola A920 Service Manual

A920:

PCAP

Description
The Platform Control Audio Power IC (PCAP), U3000, is a mixed signal IC that contains the following features:
· Audio input/output amplification and filtering
· Audio path selection
· Voltage regulation
· Battery charging control
· Real time clock
· Ringer/vibrator control
· RS-232/USB drivers
· Back-light control
· Status LED control
· Multiplexed DAC inputs for temperature and voltage monitoring
· Dual SPI control interface to allow access from two independent baseband processors
· Stereo DAC
· Overvoltage protection
· Touch Screen
The PCAP IC is controlled and configured by the Baseband Processor IC through a four-wire SPI interface. The Baseband Processor has read/write access to the PCAP
IC. Audio data is transmitted/received via the Baseband Processor through a four-wire SSI interface.
Speaker Ckts
Audio
Mic Ckts Amplifiers

POG

SSI
Helen
CODEC
Interface
Bluetooth
SPI
POG
Interface
Logic
Multiplexer
Interface
Charger
Charger
Control
Overvoltage
CE Bus
Protection
USB
RS232
Helen
Bus
USB
CE Bus
On-the-Go
Touch
Screen
Interface
Control
Logic
Linear
Regulators
Switching
Regulator
A/D
Backlight
Control
LED
Drive
U3000
Power Cut
Power Fail
Handling
Coin Cell
Interface
Stereo Detect
Display
Baseband
Circuits
RF Interface
Logic Interface
Regulator
Interface
Backlight
Status
LEDs
Helen
XTAL
Headset