MSC COM EXPRESS CX-MB-EVA2 Instrukcja Użytkownika Pobierz pdf (Strona 41)

CX-MB-EVA2 User's Manual Hardware

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.

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.

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

HP-POD

Function

HP-POD

Function

+5V

not used

CLK2

LPC_CLK

CLK1

not used

D15

not used

D14

not used

D13

Test signal 3

D12

Test signal 2

D11

Test signal 1

D10

Test signal 0

not used

Strobe

Data 7

Data 6

Data 5

Data 4

Data 3

Data 2

Data 1

Data 0

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.

Specification:

 References: X47

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

 Pinout: Refer to Table 30

1 2 ... 36 37 38 39 40 41 42 43 44 45 46

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