Pin 51–100: [Power COM LPT Floppy KB/MS/IR]
Pin | Signal | Description |
4 ETX® connectors
Type | Termination | Comment |
| 51 | LPT FLPY# | LPT / Floppy Interface Configuration Input | PU 4k7 5V | High: LPT, Low: |
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| 52 | nc | - | nc | - | Reserved |
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| 53 | VCC | Power +5V | PWR | - | - |
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| 54 | GND | Ground | PWR | - | - |
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| 55 | STB# nc | LPT Strobe Signal | - | - |
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| 56 | AFD# DENSEL | LPT Automatic Feed / Floppy Density Select | - | - |
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| 57 | nc | - | nc | - | Reserved |
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| 58 | PD7 nc | LPT Data Bus D7 | - | - |
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| 59 | IRRX | Infrared Receive | - | - |
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| 60 | ERR# HDSEL# | LPT Error / Floppy Head Select | - | - |
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| 61 | IRTX | Infrared Transmit | - | - |
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| 62 | PD6 nc | LPT Data Bus D6 | - | - |
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| 63 | RXD2 | Data Receive COM2 | PU 100k 5V | - |
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| 64 | INIT# DIR# | LPT Initiate / Floppy Direction | - | - |
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| 65 | GND | Ground | PWR | - | - |
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| 66 | GND | Ground | PWR | - | - |
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| 67 | RTS2# | Request to Send COM2 | PU 100k 5V | - |
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| 68 | PD5 nc | LPT Data Bus D5 | - | - |
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| 69 | DTR2# | Data Terminal Ready COM2 | PU 100k 5V | - |
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| 70 | SLIN# STEP# | LPT Select / Floppy Motor Step | - | - |
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| 71 | DCD2# | Data Carrier Detect COM2 | PU 100k 5V | - |
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| 72 | PD4 DSKCHG# | LPT Data Bus D4 / Floppy Disk Change | - | - |
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| 73 | DSR2# | Data Set Ready COM2 | PU 100k 5V | - |
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| 74 | PD3 RDATA# | LPT Data Bus D3 / Floppy Raw Data Read | - | - |
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| 75 | CTS2# | Clear to Send COM2 | PU 100k 5V | - |
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| 76 | PD2 WP# | LPT Data Bus D2 / Floppy Write Protect Signal | - | - |
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| 77 | TXD2 | Data Transmit COM2 | PU 100k 5V | Bootstrap PU 4k7 |
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| 78 | PD1 TRK0# | LPT Data Bus D1 / Floppy Track Signal | - | - |
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| 79 | RI2# | Ring Indicator COM2 | PU 100k 5V | - |
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| 80 | PD0 INDEX# | LPT Data Bus D0 / Floppy Index Signal | - | - |
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| 81 | VCC | Power +5V | PWR | - | - |
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| 82 | VCC | Power +5V | PWR | - | - |
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| 83 | RXD1 | Data Receive COM1 | PU 100k 5V | - |
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| 84 | ACK# DRV | LPT Acknowledge / Floppy Drive Select | - | - |
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| 85 | RTS1# | Request to Send COM1 | PU 100k 5V | Bootstrap PU 4k7 |
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| 86 | BUSY# MOT | LPT Busy / Floppy Motor Select | - | - |
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| 87 | DTR1# | Data Terminal Ready COM1 | PU 100k 5V | Bootstrap PU 4k7 |
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| 88 | PE WDATA# | LPT Paper Empty / Floppy Raw Write Data | - | - |
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| 89 | DCD1# | Data Carrier Detect COM1 | PU 100k 5V | - |
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| 90 | SLCT#WGATE# | LPT Power On / Floppy Write Enable | - | - |
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| 91 | DSR1# | Data Set Ready COM1 | PU 100k 5V | - |
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| 92 | MSCLK | Mouse Clock | PU 4k7 5V | - |
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| 93 | CTS1# | Clear to Send COM1 | PU 100k 5V | - |
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| 94 | MSDAT | Mouse Data | PU 4k7 5V | - |
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| 95 | TXD1 | Data Transmit COM1 | PU 100k 5V | Bootstrap PU 4k7 |
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| 96 | KBCLK | Keyboard Clock | PU 4k7 5V | - |
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| 97 | RI1# | Ring Indicator COM1 | PU 100k 5V | - |
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| 98 | KBDAT | Keyboard Data | PU 4k7 5V | - |
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| 99 | GND | Ground | PWR | - | - |
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| 100 | GND | Ground | PWR | - | - |
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Note: | The termination resistors in this table are already mounted on the ETX® board. Please refer to the design |
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| guide for information about additional termination resistors. |
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Kontron User's Guide ETX CD | 30 |
