J1 Backup Power Configuration - Motorola MBX Series Installation And Use Manual

Jumpers, Connectors, and LEDs
Header
J8
J9
6
J10
J11

J1 Backup Power Configuration

6-4
Table 6-1. Jumper Settings (continued)
Function
DRAM DIMM [1-2]
configuration
2-3
[1-2]
2-3
none
[none
1-2
2-3
DREQ# signal [1-2]
source for DMA-
2-3
type PCMCIA
cards
Note
MBX series embedded controllers are factory tested and shipped
with the default configurations listed above. The MBX family's
required and factory-installed debug monitor, EPPCBug,
operates with those factory settings.
MBX series embedded controllers can use 3.0V–3.6V battery power
(either on board, or external via utility connector #1) as a backup power
source for the "keep-alive" power circuits (such as the real-time clock) in
the processor.
Placing a jumper on J1 pins 1 and 2 (the default configuration) designates
the on-board battery as the source for keep-alive power. Placing a jumper
Jumper Settings
1M x 64/72 DRAM DIMM (8MB) installed.
2M/4M/8M/16M x 64/72 DRAM DIMM
(16/32/64/128MB) installed.
1M x 64/72 DRAM DIMM (8MB) installed.
2M x 64/72 DRAM DIMM (16MB) installed.
4M/8M/16M x 64/72 DRAM DIMM
(32/64/128MB) installed.
1M/2M x 64/72 DRAM DIMM (8/16MB) installed.
]
4M x 64/72 DRAM DIMM (32MB) installed.
8M/16M x 64/72 DRAM DIMM (64/128MB)
installed.
PCMCIA module DREQ# signal on INPACK# pin.
PCMCIA module DREQ# signal on BVD2_SPKR
pin.
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