B69000 Asiliant Technologies, B69000 Datasheet - Page 50

• Manufacturer Part Number: B69000
• Manufacturer: Asiliant Technologies

Specifications of B69000

• Lead Free Status / Rohs Status: Supplier Unconfirmed

3-8
Table 3-12: AC Timing Characteristics BIOS ROM
Note:
&+,36
Symbol Parameter
T
T
ROM
ROE
R O M O E #
FR A M E#
PCI BIOS ROM timing is derived from the 33 MHz PCI bus clock. AGP BIOS ROM timing is derived
from the 66 MHz AGP bus clock. Timing sequences are fixed assuming the use of widely-available,
low-cost, typical industry-standard EPROMs. Timing specifications and performance of BIOS ROM
memory accesses are non-critical since PCI/AGP BIOS ROM data is always shadowed into high-
speed system memory prior to execution of BIOS code.
TR D Y#
R O M A
69000 Databook
C LK
AD
ROMOE# Active from CLK
Slowest Permissible BIOS ROM Access Speed
RO M A ddr
T
RO E
Subject to Change Without Notice
Byte 0 Add r
Figure 3-6: BIOS ROM Timing
Electrical Specifications
Byte 1 Add r
Min
–
–
PCI:
Byte 2 Add r
Max
150
40
Byte 3 Add r
Min
AGP:
–
–
Revision 1.3 8/31/98
Max
20
75
Data Valid
Units
ns
ns