ksz8851-mql Micrel Semiconductor, ksz8851-mql Datasheet - Page 81

• Manufacturer Part Number: ksz8851-mql
• Description: Single-port Ethernet Mac Controller With 8/16-bit Or 32-bit Non-pci Interface
• Manufacturer: Micrel Semiconductor

Timing Specifications
Asynchronous Read and Write Timing
February 2009
Micrel, Inc.
Symbol
t1
t2
t3
t4
t5
t6
t7
t8
t9
Addr, AEN, BExN
RDN, WRN
Write Data
Read Data
Parameter
A1-A7, AEN, BExN[3:0] valid to RDN, WRN active
A1-A7, AEN, BExN[3:0] hold after RDN, WRN inactive
Read data valid to ARDY rising
RDN inactive to Read data invalid
WRN active to write data valid (bit12=0 in RXFDPR)
WRN active to write data valid (bit12=1 in RXFDPR)
Read or write active to ARDY Low
ARDY low (wait time)
Read active time (low)
Write active time (low)
Read inactive time (high)
Write inactive time (high)
ARDY
Table 16. Asynchronous Cycle Timing Parameters
Figure 12. Asynchronous Cycle
t1
t6
t5
81
t7
valid
t8
t3
valid
Min
valid
40
40
10
10
0
0
1
8
t2
t4
Typ
24
t9
KSZ8851-16/32 MQL/MQLI
Max
0.5
16
2
4
8
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
M9999-021309-1.1