Eurotech BitsyXb - J9: External Compactflash; Expansion Bus

Hardware Reference
110118-0001A 19
3.3.7 J9: External CompactFlash / Expansion Bus
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)
The BitsyXb makes its CompactFlash bus signals available on J9. These signals can be used to
add a CompactFlash socket to a daughter board or to expand the capabilities of the BitsyXb as a
digital expansion bus. See section 4.1.5 for details.
Pin
Name
Pin
Type
Description
1
GND
P
ground
/CARDBDET2
2
I
Card Detect 2
/CARDB16
4
I
16 Bit Access
3
PCBD10
IO
Data8-10
5
PCBD9
IO
7
PCBD8
IO
PCBD2
6
IO
Data0-2
PCBD1
8
IO
PCBD0
10
IO
9
CARDBSTSCHG
I
Status Change
11
CARDBSPK
I
Speaker
13
/CARDBREG
O
Register Access
15
VCC
PO
5 V
17
/CARDBWAIT
I
Wait
19
CARDBRES
O
Reset
21
/CARDBVS2
I
Voltage Sense 2
PCBA0
12
O
Address0-6
PCBA1
14
O
PCBA2
16
O
PCBA3
18
O
PCBA4
20
O
PCBA5
22
O
PCBA6
24
O
23
3.3V
P0
3.3 V
25
/CARDBON
O
5 V power control
n/c
26
27
CARDBIRQ
I
Interrupt
29
/CARDBMWR
O
Memory Write
31
/CARDBIOWR
O
IO Write
33
/CARDBIORD
O
IO Read
PCBA7
28
O
Address7-10
PCBA8
30
O
PCBA9
32
O
PCBA10
36
O
/CARDBMRD
34
O
Memory Read
35
/CARDB_VS1
I
Voltage Sense 1
37
/CARDBCE2
O
Low Byte Chip Select
/CARDBCE1
38
O
High Byte Chip Select