S5935TFC AMCC [Applied Micro Circuits Corporation], S5935TFC Datasheet - Page 163

• Manufacturer Part Number: S5935TFC
• Description: PCI Product
• Manufacturer: AMCC [Applied Micro Circuits Corporation]

S5935 – PCI Product
Figure 7 also shows a 5 data phase Pass-Thru burst
read, but the Add-On logic uses PTRDY# to control
the rate at which data is transferred. In many applica-
tions, Add-On logic is not fast enough to provide data
every BPCLK (every 30 ns in a 33 MHz PCI system).
Figure 86. PCI Burst Read Controlled by PTRDY#
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In this example, the Add-On interface writes data
every other clock cycle. WR# is shown asserted during
the entire Add-On burst, but WR# can be deasserted
when PTRDY# is deasserted, the S5935 functions the
same under both conditions.
Revision 1.02 – June 27, 2006
Data Book
DS1527
163