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398 AMD Geode™ SC2200 Processor Data Book
Electrical Specifications
32580B
t
RDYA2
IOCHRDY valid after IOR#/MEMR#/
RD#/DOCR#/IOW#/MEMW#/WR#/
DOCW# FE
8 M, I/O 366 9-19
9-20
t
IOCSA
IOCS[1:0]#/DOCS#/ROMCS# driven
active from A[23:0] valid
8, 16 M, I/O 34 9-19
9-20
t
IOCSH
IOCS[1:0]#/DOCS#/ROMCS# valid
Hold after A[23:0] invalid
8, 16 M, I/O 0 9-19
9-20
t
AR1
A[23:0]/BHE# valid before MEMR#/
DOCR# active
16 M 34 9-19
t
AR2
A[23:0]/BHE# valid before IOR#
active
16 I/O 100 9-19
t
AR3
A[23:0]/BHE# valid before MEMR#/
DOCR#/IOR# active
8 M, I/O 100 9-19
t
RA
A[23:0]/BHE# valid Hold after
MEMR#/DOCR#/IOR# inactive
8, 16 M, I/O 25 9-19
t
RVDS
Read data D[15:0] valid setup before
MEMR#/DOCR#/IOR# inactive
8, 16 M, I/O 24 9-19
t
RDH
Read data D[15:0] valid Hold after
MEMR#/DOCR#/IOR# inactive
8, 16 M, I/O 0 9-19
t
HZ
Read data floating after MEMR#/
DOCR#/IOR# inactive
8, 16 M, I/O 41 9-19
t
AW1
A[23:0]/BHE# valid before MEMW#/
DOCW# active
16 M 34 9-20
t
AW2
A[23:0]/BHE# valid before IOW#
active
16 I/O 100 9-20
t
AW3
A[23:0]/BHE# valid before MEMW#/
DOCW#/IOW# active
8 M, I/O 100 9-20
t
WA
A[23:0]/BHE# valid Hold after
MEMW#/DOCW#/IOW# invalid
8, 16 M, I/O 25 9-20
t
DV1
Write data D[15:0] valid after
MEMW#/DOCW# active
8, 16 M 40 9-20
t
DV2
Write data D[15:0] valid after IOW#
active
8 I/O 40 9-20
t
DV3
Write data D[15:0] valid after IOW#
active
16 I/O -23 9-20
t
WTR
TRDE# inactive after MEMW#/
DOCW#/IOW# inactive
8, 16 M, I/O 20 9-20
t
DH
Write data D[15:0] after MEMW#/
DOCW#/IOW# inactive
8, 16 M, I/O 45 9-20
t
DF
Write data D[15:0] goes TRI-STATE
after MEMW#/DOCW#/IOW# inactive
8, 16 M, I/O 105 9-20
t
WDAR
Write data D[15:0] after read MEMR#/
DOCR#/IOR#
8, 16 M, I/O 41 9-19
Table 9-22. Sub-ISA Timing Parameters (Continued)
Symbol Parameter
Bus
Width
(Bits) Type
Min
(ns)
Max
(ns) Figure Comments