BitsyXb - User Manual
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110118-0001A
3.3.2
J2: PCMCIA
Integrated Ejector: FCI 95620-050CA
The 68-pin PCMCIA socket conforms to the PCMCIA standard for 5V-tolerant Type II cards, and
can also be run at 3.3 V. Normally, the socket is de-energized. The operating system is
responsible for turning on the socket when a card is inserted and turning it off when the card is
removed.
Ejector hardware is standard. A rail-only PCMCIA slot is a volume production option for
installations where clearance is an issue. See section 6.1.4 for details.
Vpp (pins 18 and 52), which is 12 V in older PCMCIA implementations, is left unconnected in
this implementation. See section 6.3.7 for electrical specifications.
3.3.3
J3: Power, I/O, Serial 2 & 3, USB, Touch Screen and others
Board Connector: 2x25 shrouded header, 2mm, Samtec STMM-125-02-G-D
Recommended Board-to-Cable Connector: TCSD series
Recommended Board-to-Board Connector: ESQT series (e.g. ESQT-125-02-F-D-500)
Pin
Name
Pin Type
Description
1
EIO9
IO
PXA270 Digital I/Os (4.7.1, 6.3.9)
EIO8
2
IO
3
EIO7
IO
GND
4
P
ground
6
VCC
8
PO
5 V
10
5
TEMP_SENSOR_MINUS
AI
External Temperature Probe (4.3.5)
7
TEMP_SENSOR_PLUS
PO
9
/IRDAON
O
External IRDA control
11
TSPX
AIO
right
UL
Touch screen
13
TSMY
AIO
top
LR
15
TSMX
AIO
left
LL
17
TSPY
AIO bottom
UR
EIO5
12
IO
PXA270 Digital I/Os (4.7.1, 6.3.9)
EIO6
14
IO
BACKLIGHT PWM
16
AO
Backlight Intensity
/BACKLIGHTON
18
OC
Backlight On/Off
19
RXD2T
I
Serial 2
(3.3 V logic level) (4.5.1)
TXD2T
20
O
21
WIPER
AI
Touch screen wiper (optional 5-wire touch)
CHARGE
22
O
Charge Enable (PB0)
23
GND
P
ground
PE2
24
O
Power Enable #2 for external devices (5.3.2)
25
CTS3
I
Serial 3
(EIA-232) (4.5.1)
TXD3
26
O
27
RTS3
O
RXD3
28
I
7
PB0 does not have any series resistance or ESD protection.