________________________________________________________________________________________________________________________________________________
Connector PCB. If you would like us to design the connector PCB (with or without additional electronics) just
contact us.
Please note that the speaker fitted on the HB5 PCB (as shown above) is in parallel with the speaker
connections on the Connector PCB. If you connect two low imp
amplifier will probably sense the low impedance and shut down. The Beta unit will need to be powered off for
a few seconds, one of the speakers removed and then powered on again to re
If you would like to design your own Connector PCB you will need
HB5 which provides the connector interface
Pin
Signal
Comment
1
0 volts
3
LINEOUT_R
Audio line out – right channel
5
LINEOUT_L
Audio line out – left channel
7
0 volts
9
LINEIN_R
Audio line in – right
11
LINEIN_L
Audio line in – left channel
13
0 volts
15
SPEAKER_H
Audio speaker output
17
SPEAKER_L
Audio speaker output
19
0 volts
21
COM1_TX
RS232 Port 1 Transmit
23
COM1_RX
RS232 Port 1 Receive
25
0 volts
27
COM2_TX
RS232 Port 2 Transmit
29
COM2_RX
RS232 Port 2 Receive
31
0 volts
33
CTX3_P
COM Port 3 Transmit
COM 3 RS232 Transmit
35
CTX3_N
COM Port 3 Transmit
/ COM 3 RS232 Receive
37
CRX3_P
COM Port 3 Receive
39
CRX3_N
COM Port 3 Receive
41
0 volts
43
I2C SCL
I2C Clock at a 3 volts level
45
I2C SDA
I2C Data at a 3 volts level
47
0 volts
49
VIN
5 volts Power INPUT
with the main power in
connector on HB5
Notes:
1.
The details of the connector are:
a.
50 way 2mm pitch socket.
2.
The voltage level of all the GPIO lines can be changed from 3 volts to 1.8 volts in the kernel.
Beta Touch Computer
____________________________________________________________________________________________________________________________________________
us to design the connector PCB (with or without additional electronics) just
Please note that the speaker fitted on the HB5 PCB (as shown above) is in parallel with the speaker
connections on the Connector PCB. If you connect two low impedance speakers up in parallel then the audio
amplifier will probably sense the low impedance and shut down. The Beta unit will need to be powered off for
a few seconds, one of the speakers removed and then powered on again to re-activate the audio amplifi
your own Connector PCB you will need the pin out of the 50 way connector on
provides the connector interface and therefore pin out which is as follows:
Pin
Signal
Comment
2
0 volts
right channel
4
GPIO 12
GPIO signal
left channel
6
GPIO 11
GPIO signal
8
GPIO 10
GPIO signal
right channel
10
GPIO 9
GPIO signal
left channel
12
GPIO 8
GPIO signal
14
GPIO 7
GPIO signal
Audio speaker output – Positive
16
GPIO 6
GPIO signal
Audio speaker output – Negative
18
GPIO 5
GPIO signal
20
GPIO 4
GPIO signal
RS232 Port 1 Transmit
22
GPIO 3
GPIO signal
RS232 Port 1 Receive
24
GPIO 2
GPIO signal
26
GPIO 1
GPIO signal
RS232 Port 2 Transmit
28
0 volts
RS232 Port 2 Receive
30
SPI SOMI
SPI – Input when
32
SPI CLK
SPI Clock
Transmit – Positive /
COM 3 RS232 Transmit
34
SPI SIMO
SPI – Output when
COM Port 3 Transmit – Negative
/ COM 3 RS232 Receive
36
0 volts
COM Port 3 Receive – Positive
38
PWROFF#
Apply logic low to power
down the unit
COM Port 3 Receive – Negative
40
RESET#
Apply logic low to reset
the unit
42
SLEEP RQ#
Apply logic low to reset
the unit
I2C Clock at a 3 volts level
44
BOOT MODE#
I2C Data at a 3 volts level
46
0 volts
48
VCC
3 volts
INPUT – in parallel
with the main power in
connector on HB5
50
RTC_BAT
Nominal 3.6 volts DC for
Real Time Clock
The details of the connector are:
50 way 2mm pitch socket.
The voltage level of all the GPIO lines can be changed from 3 volts to 1.8 volts in the kernel.
Beta Touch Computer
_____________________________________
Page | 17
us to design the connector PCB (with or without additional electronics) just
Please note that the speaker fitted on the HB5 PCB (as shown above) is in parallel with the speaker
edance speakers up in parallel then the audio
amplifier will probably sense the low impedance and shut down. The Beta unit will need to be powered off for
activate the audio amplifier.
pin out of the 50 way connector on our
GPIO signal – 3 volts level
GPIO signal – 3 volts level
GPIO signal – 3 volts level
GPIO signal – 3 volts level
GPIO signal – 3 volts level
GPIO signal – 3 volts level
GPIO signal – 3 volts level
GPIO signal – 3 volts level
GPIO signal – 3 volts level
GPIO signal – 3 volts level
GPIO signal – 3 volts level
GPIO signal – 3 volts level
Input when Master
Output when Master
Apply logic low to power
down the unit
Apply logic low to reset
Apply logic low to reset
Nominal 3.6 volts DC for
Real Time Clock
The voltage level of all the GPIO lines can be changed from 3 volts to 1.8 volts in the kernel.
