M69000 Asiliant Technologies, M69000 Datasheet - Page 30

• Manufacturer Part Number: M69000
• Manufacturer: Asiliant Technologies

Specifications of M69000

• Lead Free Status / Rohs Status: Supplier Unconfirmed

2-6
PCI/AGP Bus Interface (continued)
Note:
driven high for one clock before released, and are not driven for at least one cycle after being released by
the previous device. A pull-up provided by the bus controller is used to maintain an inactive level between
transactions.
&+,36
L4
BGA mBGA
PIN
A4
L2
L3
S/TS stands for “Sustained Tri-state”. These signals are driven by only one device at a time, are
PIN
J3
J4
B5
69000 Databook
J5 DEVSEL#
Pin Name
PERR#
SERR#
INT#
Type
S/TS
S/TS
OD
OD
Subject to Change Without Notice
Active Powered Description
Low
Low
Low
Low
Pin Descriptions
IOVCC
& GND
IOVCC
& GND
IOVCC
& GND
IOVCC
& GND
Device Select. Indicates the current target has
decoded its address as the target of the current
access
Parity Error. This signal reports data parity errors
(except for Special Cycles where SERR# is used).
The PERR# pin is Sustained Tri-state. The receiving
agent will drive PERR# active two clocks after
detecting a data parity error. PERR# will be driven
high for one clock before being tri-stated as with all
sustained tri-state signals. PERR# will not report
status until the chip has claimed the access by
asserting DEVSEL# and completing the data phase.
System Error. Used to report system errors where
the result will be catastrophic (address parity error,
data parity errors for Special Cycle commands, etc.).
This output is actively driven for a single PCI/AGP
clock cycle synchronous to BCLK and meets the
same setup and hold time requirements as all other
bused signals. SERR# is not driven high by the chip
after being asserted, but is pulled high only by a weak
pull-up provided by the system. Thus, SERR# on the
PCI/AGP bus may take two or three clock periods to
fully return to an inactive state.
Interrupt request pin.
Revision 1.3 8/31/98