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cPCI-MXS64 Technical Reference Manual
3-32
3.5.2.2. SCSI
Interface
Signal
Pin Assignation
Description
SD 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.
3.5.2.3. Video
Interface
Signal
Pin Assignation
Description
SDATA
D9
Video serial data line (video I2C)
SCLK
A10
Video serial clock line (video I2C)
HSYNC B10
Horizontal
sync
line
VSYNC C10
Vertical
sync
line
RED
D10
Analog Red video signal
GREEN E10
Analog
Green
video
signal
BLUE
A11
Analog Blue video signal
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