Difference between revisions of "Serial Cable"
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Sjlongland (Talk | contribs) (Put in some better diagrams of the ports.) |
Sjlongland (Talk | contribs) m (→Serial connector pinouts: Repaced the ASCII-art table with a true HTML table in Wiki syntax) |
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| − | + | {| border="1" cellpadding="2" | |
| − | + | | Name (V24) || DB25 Pin# || DB9 Pin# || MiniDIN8 Pin# || Direction || Full Name || Remarks | |
| − | + | |- | |
| − | + | | TxD || 2 || 3 || 3 || Out || Transmit Data || Data | |
| − | + | |- | |
| − | + | | RxD || 3 || 2 || 5 || In || Receive Data || Data | |
| − | + | |- | |
| − | + | | RTS || 4 || 7 || 6 || Out || Request To Send || Handshaking | |
| − | + | |- | |
| − | + | | CTS || 5 || 8 || 2 || In || Clear To Send || Handshaking | |
| − | + | |- | |
| − | + | | DTR || 20 || 4 || 1 || Out || Data Terminal Ready || Status | |
| − | + | |- | |
| − | + | | DSR || 6 || 6 || - || In || Data Set Ready || Status | |
| − | + | |- | |
| + | | RI || 22 || 9 || - || In || Ring Indicator || Status | ||
| + | |- | ||
| + | | DCD || 8 || 1 || 7 || In || Data Carrier Detect || Status | ||
| + | |- | ||
| + | | GND || 7 || 5 || 4,8 || - || Signal ground || Reference level | ||
| + | |- | ||
| + | | - || 1 || - || - || - || Protective ground || Don't use this one as signal ground! | ||
| + | |} | ||
== How to connect the connectors == | == How to connect the connectors == | ||
Revision as of 01:11, 24 September 2005
This is the way you need to solder your cable.
Serial connector pinouts
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| Name (V24) | DB25 Pin# | DB9 Pin# | MiniDIN8 Pin# | Direction | Full Name | Remarks |
| TxD | 2 | 3 | 3 | Out | Transmit Data | Data |
| RxD | 3 | 2 | 5 | In | Receive Data | Data |
| RTS | 4 | 7 | 6 | Out | Request To Send | Handshaking |
| CTS | 5 | 8 | 2 | In | Clear To Send | Handshaking |
| DTR | 20 | 4 | 1 | Out | Data Terminal Ready | Status |
| DSR | 6 | 6 | - | In | Data Set Ready | Status |
| RI | 22 | 9 | - | In | Ring Indicator | Status |
| DCD | 8 | 1 | 7 | In | Data Carrier Detect | Status |
| GND | 7 | 5 | 4,8 | - | Signal ground | Reference level |
| - | 1 | - | - | - | Protective ground | Don't use this one as signal ground! |
How to connect the connectors
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DTR - Data Terminal Ready 1 | 6 DSR - Data Set Ready
CTS - Clear To Send 2 | 4 RTS
TD - Transmit Data 3 | 3 RD
SG - Signal Ground 4,8 | 7 SG
RD - Receive Data 5 | 2 TD
RTS - Request To Send 6 | 5 CTS
DCD - Data Carrier Detect 7 | 20 DTR
Shield | 1 Protective Ground
It it might be needed to have a connection between pin 20 and pin 8 on the Sub-D 25 connector to have your terminal do a carrier detect. SGI is using the same pin-pout for it's 8-pin mini-DIN connectors as Apple for it's machines. Therefor cables and adapters suitable for use with Apple system may be used.
