Specifications

EPC-3305 Hardware Reference
6
Setting jumpers and headers
Flash
The CPU board provides a 2x5-pin header (H2) that you use to re-program the
Flash chip. For detailed information about re-programming the flash chip, see
Appendix F, Re-programming the flash chip.
Flash jumper settings are typically used during manufacturing
for re-programming
the BIOS in the Flash Boot Device (FBD)
and are included here only for reference.
There are no user-configurable jumpers on the test header for normal operation.
Jumper pins are labeled from the point of view of looking at the front of
the connector.
Figure 2-1. EPC-3305 CPU board: jumper locations
MFG
Flash:
Figure 2-2. Flash header settings
Pins 1 and 2:
Force BIOS Recovery
Pins 4 and 5:
Boot Block Enable
1
10
1
10
2
9
2
9
Function Pins Description
Force BIOS
Recovery
1, 2 To force recovery of the BIOS, connect pin 1
(~FRC_RCVR) to pin 2 (GND).
This signal is connected to the P1.3 input of the
keyboard controller. It is readable by the Boot Block
BIOS code and forces the Boot Block to initiate a
recovery sequence at power-up should other methods
of initiating the sequence become inaccessible.