Token Ring Port Signals - Cisco 7000 Hardware Installation And Maintenance

Token Ring Port Signals

Note
be used for the unused Category 5, 100-ohm UTP cable pairs 4/5 and 6/7. Common-mode
termination reduces the contributions to electromagnetic interference (EMI) and susceptibility to
common-mode sources. Wire pairs 4/5 and 6/7 are actively terminated in the RJ-45, 100BaseTX port
circuitry in the FEIP port adapter.
Table A-5
Pin
14–17
12
11
13
3
4–7
9
10
8
18
19
2
22–39
1, 20, 21, 40
1. Any pins not indicated are not used.
2. Tx_CLK and Rx_CLK are provided by the external transceiver.
Token Ring Port Signals
A network interface cable provides the connection between the 9-pin Token Ring connectors on the
TRIP and a media access unit (MAU). The 9-pin connector at the TRIP end, and the MAU connector
at the network end, are described in the section "Token Ring Connection Equipment" in the chapter
"Preparing for Installation." Table A-6 lists the signals for the DB-9 Token Ring connector used on
the TRIP.
Table A-6
Pin
1
5
6
9
10 and 11
A-252 Cisco 7000 Hardware Installation and Maintenance
Referring to the RJ-45 pinout in Table A-4, proper common-mode line terminations should
FEIP Port Adapter MII Connector Pinout
1
In Out
– Yes
Yes –
– Yes
– Yes
– Yes
Yes –
Yes –
Yes –
Yes –
Yes –
Yes –
– –
– –
– –
Token Ring Connector Signals
Signal
Ring-In B
Ring-Out A
Ring-In A
Ring-Out B
Ground
I/O Description
– Transmit Data (TxD)
– Transmit Clock (Tx_CLK)
– Transmit Error (Tx_ER)
– Transmit Enable (Tx_EN)
– MII Data Clock (MDC)
– Receive Data (RxD)
– Receive Clock (Rx_CLK)
– Receive Error (Rx_ER)
– Receive Data Valid (Rx_DV)
– Collision (COL)
– Carrier Sense (CRS)
Yes MII Data Input/Output (MDIO)
– Common (ground)
– +5.0 volts (V)
2