User manual
DIGITAL-LOGIC AG    MSB900/L Detailed Technical Manual V1.0 
51 
X101  PCI-104 BUS Interface 
Pin  A  B  C  D 
1  GND/5.0V KEY2  Reserved  +5  AD00 
2  VI/O  AD02  AD01  +5V 
3  AD05  GND  AD04  AD03 
4  C/BE0*  AD07  GND  AD06 
5  GND  AD09  AD08  GND 
6  AD11  VI/O  AD10  M66EN 
7  AD14  AD13  GND  AD12 
8  +3.3V  C/BE1*  AD15  +3.3V 
9  SERR*  GND  SB0*  PAR 
10  GND  PERR*  +3.3V  SDONE 
11  STOP*  +3.3V  LOCK*  GND 
12  +3.3V  TRDY*  GND  DEVSEL* 
13  FRAME*  GND  IRDY*  +3.3V 
14  GND  AD16  +3.3V  C/BE2* 
15  AD18  +3.3V  AD17  GND 
16  AD21  AD20  GND  AD19 
17  +3.3V  AD23  AD22  +3.3V 
18  IDSEL0  GND  IDSEL1  IDSEL2 
19  AD24  C/BE3*  VI/O  IDSEL3 
20  GND  AD26  AD25  GND 
21  AD29  +5V  AD28  AD27 
22  +5V  AD30  GND  AD31 
23  REQ0*  GND  REQ1*  VI/O 
24  GND  REQ2*  +5V  GNT0* 
25  GNT1*  VI/O  GNT2*  GND 
26  +5V  CLK0  GND  CLK1 
27  CLK2  +5V  CLK3  GND 
28  GND  INTD*  +5V  RST* 
29  +12V  INTA*  INTB*  INTC* 
30  -12V  Reserved  Reserved  GND/3.3V KEY2 
Notes: 
1.  The shaded area denotes power or ground signals. 
2.  The KEY pins are to guarantee proper module installation. Pin-A1 will be removed and the female side 
plugged for 5.0V I/O signals and Pin-D30 will be modified in the same manner for 3.3V I/O. It is highly 
recommended that both KEY pins (A1 and D30) be electrically connected to GND for shielding. 
DLAG boards have them as NC (not connected). 
X110  LPC-Port 
Only for factory and POD-Diagnostic use. 
Pin  Signal  Pin  Signal 
1  VCC 3.3V  2  LAD0 
3  LFrame#  4  LAD1 
5  PCI_RST#  6  LAD2 
7  FWH_TBL#  8  LAD3 
9  VCC 5V  10  PCI_RST# 
11  LPC_Clock  12  nc 
13  Ground  14  FWH_Control 










