Eurotech BitsyXb - J2: Pcmcia; J3: Power, I;O, Serial 2 & 3, USB, Touch Screen and Others

BitsyXb - User Manual
16 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
(6.3.3)
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
(4.6.6, 6.3.2)
/BACKLIGHTON 18 OC
Backlight On/Off
(4.6.6, 6.3.2)
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)
7
(5.3.7)
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.