Revision 3; Revision 4; Revision 5; New Features - Applied Data Systems Bitsy Plus User Manual

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7.2.2

Revision 3

Internal release
7.2.3

Revision 4

Internal release
7.2.4

Revision 5

New Features

USB_Reconn signal added at J3 pin 33 (formerly n/c) (SA-1110 GP12) (4.5.2)
Can turn off ADSmartIO analog voltage reference (Vref) as part of subsystem partitioning
Production option to bypass audio amplifier
ADSmartIO now can monitor the DC_GOOD signal (VBATT_NEG is a production option).

Enhancements

Expanded backlight PWM voltage range from 3.3 V to 5 V (option for 3.3 V)
Codec reset control (SA-1110 GP11)
Reduced sleep mode current
Improved touch panel operation (lower noise)
Improved audio codec operation through additional power and ground partitioning
Height of tallest component on bottom side of board reduced from 0.185 inches (4.70 mm) to
0.126 inches (3.20 mm)

Changes

Flash reset now controlled by system reset. Resolves condition under which system will
sometimes not reboot from hard reset.
PCMCIA power control updated to allow full cut-off of power
PCMCIA 3.3V power control enable signal has inverse polarity
RqOnOff signal management now passed through CPLD and handled by ADSmartIO.
System can wake up after a touch screen event
7.2.5

Revision A

Enhancements
Temperature sensor input has 2x improved resolution across industrial temperature range.
Reduced sleep current
Adds support for CS4202 audio codec
Improved Vddx performance with 5V-only systems
ADS document # 110114-1001A
Board Revision History
Page 57

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