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TABLE B1-2. P1 - System Expansion - Interconnect Signals
Pin No.
Signal Name
C32
N.C.
D1
GND
D2
D3
D4
EXPWE0b
D5
EXPWE1b
D6
GND
D7
EXPGL0b
D8
EXPGL1b
D9
EXPGL2b
D10
EXPGL3b
D11
EXPGL4b
D12
EXPGL5b
D13
GND
D14
V3.3
D15
EXPCTL0
MOTOROLA
Freescale Semiconductor, Inc.
Attribute
-
Not Connected
P
Digital Ground. Connected to main GND plane of the ADS.
O
Expansion Write Enable (0:1) (L). This are buffered GPCM Write
Enable lines (0:1). They are meant to qualify writes to GPCM
controlled 8/16 data bus width memory devices. This to provide
eased access to various communication transceivers.
EXPWE0b
EXPD(8:15). These lines may also function as UPM controlled
Byte Select Lines, which allow control over almost any type of
memory device.
P
Digital Ground. Connected to main GND plane of the ADS.
O
Expansion General Purpose Lines (0:5). These are buffered
GPL(0:5)b lines which assist UPM control over memory device if
necessary. These are output only signals and therefore, do not
support H/W controlled UPM waits (GPL4 as such UPWAIT).
P
Digital Ground. Connected to main GND plane of the ADS.
P
3.3V Power Out. These lines are connected to the main 3.3V
plane of the MSC8101ADS, this, to provide 3.3V power where
necessary for external tool connected. The amount of current
allowed to be drawn from this power bus is found in
"Off-Board Application Maximum Current Consumption" on
page 66
O
Expansion Control Line 0. This line is a buffered version of
MSC8101's BCTL0 (Bus Control Line 0) which serves as R~/W,
provided for expansion board's use.
MSC8101ADS RevB User's Manual
For More Information On This Product,
Go to: www.freescale.com
Description
controls
EXPD(0:7)
while
.
EXPWE1b
controls
TABLE 7-1.
B-81
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