®
DEVICE SPECIFICATION
DEVICE SPECIFICATION
PCI CONTROLLER
S5933
S5933
PCI CONTROLLER
3.0 SIGNAL DESCRIPTIONS
Signal Type Definition
The following signal type definitions [in, out, t/s, s/t/s and o/d] are taken from Revision 2.1 of the PCI local bus
specification.
in
Input is a standard input-only signal.
out
t/s
Totem Pole Output is a standard active driver.
Tri-State® is a bidirectional, tristate input/output pin.
s/t/s
Sustained Tri-State is an active low tristate signal owned and driven by one and only one agent at
a time. The agent that drives an s/t/s pin low must drive it high for at least one clock before letting
it float. A new agent cannot start driving a s/t/s signal any sooner than one clock after the
previous owner tri-states it. A pullup is required to sustain the inactive state until another agent
drives it, and must be provided by the central source.
o/d
Open Drain allows multiple devices to share as a wire-OR.
Note that a # symbol at the end of a signal name denotes that the active state occurs when the signal is at a low
voltage. When no # symbol is present, the signal is active high.
Figure 3-1. S5933 Signal Pins
PCI Local Bus
Add-On Bus
AD [31:00]
C/BE[3:0]#
PAR
PTATN#
PTRDY#
PTNUM[1:0]
PTBE[3:0]#
PTADR#
CLK
RST#
PTWR
PTBURST#
DQ[31:00]
FRAME#
IRDY#
ADR[6:2]
BE[3:0]#
MODE 16/32
SELECT#
WR#
TRDY#
STOP#
LOCK#
IDSEL
DEVSEL#
REQ#
RD#
GNT#
PERR#
SERR#
WRFIFO#
RDFIFO#
WRFULL
RDEMPTY
FLT#
INTA#
SNV
IRQ#
BPCLK
SYSRST#
nv MEMORY
INTERFACE
SERIAL
BYTE-WIDE
Applied Micro Circuits Corporation
6195 Lusk Blvd., San Diego, CA 92121 • (619) 450-9333
3-3
AMCC [ APPLIED MICRO CIRCUITS CORPORATION ]
