Teknor Industrial Computers TEK-CPCI 1003, Техническое справочное руководство

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CPCI I/O Signals
11-3
11.2 J4 SIGNAL SPECIFICATION
11.2.1 Power Management
Signal Pin Assignation (J4) Description
I2C-CLK A1 I2C clock signal
I2C-DATA B1 I2C data signal
LID C1 Reserved
/EXT-FAN0-FAIL
D1 Enclosure fan 0 fail
/EXT-FAN1-FAIL
E1 Enclosure fan 1 fail
/SM-BYPASS A2 Reserved
11.2.2 SCSI Interface
Signal Pin Assignation (J4) Description
SCD 0-15 E7, D7, C7, B7, A7, E6,
D6, C6, E2, D2, C2, B2,
E8, D8, C8, B8 SCSI Data – The SCSI data lines drive the ID during
arbitration and selection, and command and data
information as well as status and messages.
/IO A3 In/Out – Indicates the In direction when asserted and
the Out direction when not asserted.
/SREQ B3 Request – A target will assert REQ to indicate a byte is
ready or is needed by the Target.
/CD C3 Command/Data – Indicates Command or message
phase when asserted, and Data phase when not
asserted.
/SSEL D3 SCSI Select – The line is driven after a successful
arbitration to select as an initiator or reselect as a target
and otherwise it is received.
/SMSG E3 SCSI Message - Indicates a Message phase when
asserted, and Command or Data phase when not
asserted.
/RST A4 Reset – Signal is interpreted as a hard reset and will
clear all commands pending on the SCSI bus.
/ACK B4 Acknowledge – Indicate a byte is ready for or was
received from the Target.
/BSY C4 Busy – Handshake signal used during arbitration.
/SATN E4 Attention – This line is activated when a special
condition occurs.
/WIDEPS B5 Wide Present – When Low, indicates that a wide (16-bit)
cable is present.
TERMPWR C5, D5 Termination Power.
/SDPH, /SDPL A8, B6 SCSI High/Low Parity – Provide odd parity for data
lines.