Board Revision History
110121-4001A
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4 Board Revision History
4.1
Identifying the board revision
The product revision number of the Bitsy G5 is etched on the underside of the printed circuit
board. That number is 170121-4000x, where "x" is the board revision.
4.2
Revision History
This section describes the differences between the revisions of the Bitsy G5.
4.2.1
Revision 2
Pre-production
If you are using a Bitsy G5 as a replacement for the BitsyXb, please note these differences from
revision A of the BitsyXb.
New Features
Freescale i.MX31 processor replaces XScale PXA270.
Freescale MC13783 Power Management and Audio Circuit:
•
Replaces discrete microphone preamp circuitry and Crystal CS4202 AC’97 stereo codec.
•
Replaces discrete switching regulator, linear voltage regulator, and step down converters
providing supply voltages for processor, memories, CPLD, and IO.
•
Provides 4-wire analog touch panel capability.
•
Replaces discrete RTC component.
DDR SDRAM replaces SDR SDRAM.
USB 2.0 Host port and USB 2.0 On-The-Go (OTG) port replaces USB 1.1 ports.
Changes
Pinout of JP2 swapped.
Voltage Setting
Jumper Setting
From
To
Vddx (3.3 V)
1-2
2-3
Vcc (5.0 V)
2-3
1-2
Connector reference designators labeled differently. In this manual, all Bitsy G5 reference
designators are shown as (Jx).
Input Power connector, J6, removed.
Vee Adapter connector, J8, removed.
Series resistor removed from USB_RECONN output, J3 (J9) pin 33.
Option to operate LCD panel buffers at either 3.3 V or 5 V removed. Supports LCD display data
at 3.3 V only.
Supercapacitor Input connector, J11 (J7), not supported.
