MSC CX-MB-EVA2 user manual OnBoard BIOS-Flash, POST-Code Display, Lattice Programming Interface

CX-MB-EVA2 User's Manual Hardware

4.22OnBoard 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.

4.23POST-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.

In addition, these signals are output on a pin header. For protocolling purposes a logic analyser can be connected here.

The pinout of the output connector X44 corresponds to the pinout of the Hewlett Packard 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)

4.23.1Lattice 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.

Specification:

￿ References: X47

￿ Connector: CAB 714-91-164-31-007 (socket)

￿ Pinout: Refer to Table 30

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