MSC COM EXPRESS CX-MB-EVA2 User Manual
CX-MB-EVA2
User's Manual
Hardware
41
4.22
OnBoard BIOS-Flash
There is a PLCC32 socket on the mother board, where an additional firmware hub can
be inserted. To boot from this firmware hub, the firmware hub on the COM Express
module has to be disabled with J0203.
be inserted. To boot from this firmware hub, the firmware hub on the COM Express
module has to be disabled with J0203.
4.23
POST-Code Display
For debugging purposes a POST code display is implemented on the base board, thus
enabling the display of BIOS outputs on IO-port 80h and/or Port 90h.
enabling the display of BIOS outputs on IO-port 80h and/or Port 90h.
In addition, these signals are output on a pin header. For protocolling purposes a logic
analyser can be connected here.
analyser can be connected here.
The pinout of the output connector X44 corresponds to the pinout of the Hewlett Packard
HP-PODs.
HP-PODs.
Specification:
References:
X44
Connector:
20-pin header 2.54mm
Pinout:
Refer to Table 29
Pin
HP-POD
Function
Pin
HP-POD
Function
1
+5V
not used
2
CLK2
LPC_CLK
3
CLK1
not used
4
D15
not used
5
D14
not used
6
D13
Test signal 3
7
D12
Test signal 2
8
D11
Test signal 1
9
D10
Test signal 0
10
D9
not used
11
D8
Strobe
12
D7
Data 7
13
D6
Data 6
14
D5
Data 5
15
D4
Data 4
16
D3
Data 3
17
D2
Data 2
18
D1
Data 1
19
D0
Data 0
20
GND
Ground
Table 29 Pinout POST Display (HP-POD)
4.23.1 Lattice Programming Interface
A connector used to program the PLD to decode the POST codes is implemented. To
reprogram the PLD a Lattice programming adapter is required.
reprogram the PLD a Lattice programming adapter is required.
Specification:
References:
X47
Connector:
CAB 714-91-164-31-007 (socket)
Pinout: Refer to Table 30