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B-80 MSC8101ADS RevB User’s Manual MOTOROLA
C11 IRQ6b I,P.U. Interrupt Request 6 . Connected to MSC8101‘s DP6//IRQ6b/
DACK3 signal. Pulled up on the ADS with a 10 KΩ resistor. This
line is shared with the ATM UNI’s interrupt line and therefore,
when driven by an external tool, MUST be driven with an Open
Drain gate. Failure to do so may result in permanent damage
to the MSC8101 or to ADS logic.
C12 IRQ7b I.P.U. Interrupt Request 7 . Connected to MSC8101‘s DP7/IRQ7b/
DACK4 signal. Pulled up on the ADS with a 10 KΩ resistor. This
line is shared with the Fast Ethernet transceiver’s interrupt line
and therefore, when driven by an external tool, MUST be driven
with an Open Drain gate. Failure to do so might result in
permanent damage to the MSC8101 and / or to ADS logic.
C13 GND P Digital Ground. Connected to main GND plane of the ADS.
C14 EXPD0 I/O, T.S. Expansion Data (0
a
:15). This is a double buffered version of the
PPC bus D(0:15) lines, controlled by on-board logic. These lines
will be driven only if BTOLCS1b or BTOLCS2b are asserted.
Otherwise they are tristated.
The direction of these lines is determined by buffered BCTL0, in
function of R~/W.
C15 EXPD1
C16 EXPD2
C17 EXPD3
C18 EXPD4
C19 EXPD5
C20 EXPD6
C21 EXPD7
C22 EXPD8
C23 EXPD9
C24 EXPD10
C25 EXPD11
C26 EXPD12
C27 EXPD13
C28 EXPD14
C29 EXPD15
C30 IRQ4b I.P.U. Interrupt Request 4. Connected to MSC8101‘s DP4/IRQ4b/
DREQ3 signal. Pulled up on the ADS with a 10 KΩ resistor. This
line is shared with the Fast Ethernet transceiver’s interrupt line
and therefore, when driven by an external tool, MUST be driven
with an Open Drain gate. Failure to do so might result in
permanent damage to the MSC8101 and / or to ADS logic.
C31 IRQ5b I.P.U. Interrupt Request 5. Connected to MSC8101‘s DP5/IRQ5b/
DREQ5 signal. Pulled up on the ADS with a 10 KΩ resistor. This
line is shared with the Fast Ethernet transceiver’s interrupt line
and therefore, when driven by an external tool, MUST be driven
with an Open Drain gate. Failure to do so might result in
permanent damage to the MSC8101 and / or to ADS logic.
TABLE B1-2. P1 - System Expansion - Interconnect Signals
Pin No. Signal Name Attribute Description
Frees
cale Semiconductor,
I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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