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MOTOROLA MSC8101ADS RevB User’s Manual B-93
B•1•7 P12 - Ethernet Port Connector
The Ethernet connector on the MSC8101ADS - P12, is a Twisted-Pair (10-Base-T) compatible
connector. It is implemented with a 90
o
, 8-pin, RJ45 connector, signals of which are described in
TABLE B1-8. "P17,P18 - T1/E1 Line Connectors Interconnect Signals" below
B•1•8 P15,P16 - SMB Connectors
These are RF Subminiature Coaxial Connectors.
B•1•9 P17,P18 - Double RJ45 T1/E1 Line Connectors
The T1/E1 connectors Twisted-Pair compatible connector. It is implemented with a 90
o
, 8-pin,
double RJ45 connector, signals of which are described in TABLE B1-8. "P17,P18 - T1/E1 Line
9 RST I/O,P.U. In fact, HRESETb. When asserted by an external H/W, generates
Hard-Reset sequence for the MSC8101. During that sequence,
asserted by the MSC8101 for 512 system clocks. Pulled Up on
the ADS using a 1KΩ resistor.
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.
10 TMS I Test Mode Select. This signal qualified with TCK in a same
manner as TDI, changes the state of the JTAG machines. This
line is pulled up internally by the MSC8101.
11 VDD P Connect to 3.3V power supply bus. May be used for Command
Convertor power.
12 N.C. - Not Connected.
13
14 TRSTb I Test port Reset. When this signal is active (Low), it resets the
JTAG logic of both the MSC8101. This line is pull-down on the
ADS with a 2.2KΩ resistor, to provide constant reset of the JTAG
logic.
TABLE B1-7. P12 - Ethernet Port Interconnect Signals
Pin
No.
Signal Name Description
1 TPTX(GRAY) Twisted-Pair Transmit Data positive output from the MSC8101ADS.
2 TPTX~(BROWN) Twisted-Pair Transmit Data negative output from the MSC8101ADS.
3 TPRX(YELLOW) Twisted-Pair Receive Data positive input to the MSC8101ADS.
4 (RED,GREEN) Bob Smith terminated on the MSC8101ADS.
5
6 TPRX~(BLACK) Twisted-Pair Receive Data negative input to the MSC8101ADS.
7 (BLUE,ORANGE) Bob Smith terminated on the MSC8101ADS.
8
TABLE B1-6. P6 - JTAG/ONCE Connector - 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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