DM9010BI
Industrial-temperature Single Chip Ethernet Controller with General Processor Interface
10.3.4 Processor I/O Read Timing
Symbol
T1
Parameter
System Address(SA) valid to IOR# valid
IOR# width
Min.
0
10
Typ. Max.
Unit
ns
ns
T2
T3
T4
T5
T6
IOR# valid to System Data(SD) valid
IOR# invalid to System Data(SD) bus invalid
IOR# invalid to System Address(SA) invalid
IOR# invalid to next IOR#/IOW# valid
When read DM9010BI register
3
3
ns
ns
ns
clk*
0
2
T2+T6 IOR# valid to next IOR#/IOW# valid
When read DM9010BI memory with F0h register
T2+T6 IOR# valid to next IOR#/IOW# valid
When read DM9010BI memory with F2h register
4
1
clk*
clk*
T7
T8
System Address(SA) valid to IO16,IO32 valid
System Address(SA) invalid to IO16, IO32 invalid
3
3
ns
ns
*Note：(The default clk period is 20ns)
1. The IO16 is valid when the SD bus width is 16-bit or
32-bit, and the system address is DATA port (i.e.
CMD is high) and the value of INDEX port is
memory data register index.（ex. F0H, F2H, F6H or
F8H）
2. The IO32 is valid when the SD bus width is 32-bit,
the system address is DATA port (i.e. CMD is high)
and the value of INDEX port is memory data
register index（ex. F0H, F2H, F6H or F8H）
Preliminary
48
Version: DM9010BI--DS-P01
January 12, 2010
DAVICOM [ DAVICOM SEMICONDUCTOR, INC. ]
