| Sun Fire V890 Server Service Manual
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This appendix gives you reference information about the system's rear panel ports and pin assignments. Topics covered in this appendix include:
Reference for the Serial Port A and B Connectors
The serial port conforms to EIA-423 and EIA-232D specifications.
Serial Port Connector Diagram
Serial Port Signals
Signal descriptions ending in "A" indicate that the signal is associated with the port provided by a standard DB-25 serial cable or the connector labeled "A" on the optional DB-25 splitter cable. Signal descriptions ending in "B" indicate that the signal is associated with the port provided by the connector labeled "B" on the optional DB-25 splitter cable.
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Pin
|
Signal Description
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Pin
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Signal Description
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1
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No Connection
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14
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Transmit Data B
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2
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Transmit Data A
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15
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Transmit Clock A (External)
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3
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Receive Data A
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16
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Receive Data B
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4
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Ready To Send A
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17
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Receive Clock A
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5
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Clear To Send A
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18
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Receive Clock B
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6
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Synchronous A
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19
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Ready To Send B
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7
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Signal Ground A
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20
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Data Terminal Ready A
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8
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Data Carrier Detect A
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21
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No Connection
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9
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No Connection
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22
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No Connection
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10
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No Connection
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23
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No Connection
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11
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Data Terminal Ready B
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24
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Transmit Clock A (Internal)
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12
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Data Carrier Detect B
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25
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Transmit Clock B
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13
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Clear To Send B
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Reference for the USB Connectors
Two Universal Serial Bus (USB) connectors are located on the system I/O board and can be accessed from the rear panel.
USB Connector Diagram
USB Connector Signals
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Pin
|
Signal Description
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Pin
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Signal Description
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A1
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+5 VDC
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B1
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+5 VDC
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A2
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Port Data_N
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B2
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Port Data_N
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A3
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Port Data_P
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B3
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Port Data_P
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A4
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Ground
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B4
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Ground
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Reference for the Twisted-Pair Ethernet Connector
The twisted-pair Ethernet (TPE) connector is an RJ-45 connector located on the system I/O board and can be accessed from the rear panel.
TPE Connector Diagram
TPE Connector Signals
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Pin
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Signal Description
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Pin
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Signal Description
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1
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Transmit Data +
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5
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Common Mode Termination
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2
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Transmit Data -
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6
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Receive Data -
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3
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Receive Data +
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7
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Common Mode Termination
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4
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Common Mode Termination
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8
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Common Mode Termination
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Reference for the System Controller Ethernet Connector
The system controller Ethernet connector is an RJ-45 connector located on the system controller board and can be accessed from the rear panel.
System Controller Ethernet Connector Diagram
System Controller Ethernet Connector Signals
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Pin
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Signal Description
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Pin
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Signal Description
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1
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Transmit Data +
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5
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Common Mode Termination
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2
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Transmit Data -
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6
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Receive Data -
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3
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Receive Data +
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7
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Common Mode Termination
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4
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Common Mode Termination
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8
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Common Mode Termination
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Reference for the System Controller Serial Connector
The system controller serial connector is an RJ-45 connector located on the system controller card and can be accessed from the rear panel.
System Controller Serial Connector Diagram
System Controller Serial Connector Signals
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Pin
|
Signal Description
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Pin
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Signal Description
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1
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Ready To Send
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5
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Ground
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2
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Data Terminal Ready
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6
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Receive Data
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3
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Transmit Data
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7
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No Connection
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4
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Ground
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8
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Clear To Send
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| Sun Fire V890 Server Service Manual
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817-3957-12
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Copyright © 2005, Sun Microsystems, Inc. All Rights Reserved.