Specifications

CHAPTER 4
Expansion Features
The DAV Connector 53
The PCI slot in the Macintosh Performa 6400 computer does not support the optional
64-bit bus extension signals or cache support signals.
For more information about the PCI expansion slot, refer to Designing PCI Cards and
Drivers for Power Macintosh Computers.
The DAV Connector 4
The optional video input card has a separate connector called the DAV (digital audio
video) connector. The DAV connector provides access to the video input card’s 4:2:2
unscaled YUV video input data bus and associated control signals. By means of a 60-pin
cable to the DAV connector, a PCI expansion card can gain access to the digital video bus
on the video input card and use it to transfer real-time video data to the computer. Such
a PCI expansion card can contain a hardware video compressor or other video processor.
The DAV connector accepts YUV video and analog sound from the expansion card but
does not itself generate YUV video output or audio output signals.
The DAV connector is a 60-pin flat ribbon connector located at the top edge of the video
input card. Optional PCI video out expansion cards are connected to the video input
card with a 7-inch 60-conductor flat ribbon cable that the user can install between the
DAV connector and the PCI card. The DAV connecting cable is shown in Figure 4-2,
where dimensions are given in millimeters with inch equivalents in brackets.
RST# Reset; used to bring registers and signals to a known state
INTA#,
INTB#,
INTC#,
INTD#
Interrupt request pins; wired together on each slot
LOCK# Lock; indicates an operation that may require multiple transactions to
complete
PERR# Parity error; used to report data parity errors during PCI transactions
excluding a Special Cycle transaction
SERR# System error; used to report address parity errors, data parity errors
during a Special Cycle, or any other system error that will be
catastrophic
Table 4-8 PCI signals (continued)
Signal name Description