LAN9221i SMSC [SMSC Corporation], LAN9221i Datasheet - Page 128
LAN9221i
Manufacturer Part Number
LAN9221i
Description
High-Performance 16-bit Non-PCI 10/100 Ethernet Controller with Variable Voltage I/O
Manufacturer
SMSC [SMSC Corporation]
Datasheet
1.LAN9221I.pdf
(151 pages)
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Chapter 6 Timing Diagrams
Revision 2.6 (12-04-08)
6.1
6.2
Read Cycles:
Write Cycles:
Output timing specifications assume an equivalent test load as illustrated in
The LAN9221/LAN9221i supports the following host cycles:
All timing measurements were verified under the following conditions:
Note: The specified test load used for output timing is dependant on VDDVARIO.
Temperature: ................................................................................................................................
Load Capacitance (VDDVARIO = 3.3V +/- 300mV):........................................................................ 25pF
Load Capacitance (VDDVARIO = 2.5V +/- 10%): ............................................................................ 10pF
Load Capacitance (VDDVARIO = 1.8V +/- 10%): ............................................................................ 10pF
Note 6.1
Equivalent Test Load
Host Interface Timing
OUTPUT
PIO Reads (nCS or nRD controlled)
PIO Burst Reads (nCS or nRD controlled)
RX Data FIFO Direct PIO Reads (nCS or nRD controlled)
RX Data FIFO Direct PIO Burst Reads (nCS or nRD controlled)
PIO writes (nCS and nWR controlled)
TX Data FIFO direct PIO writes (nCS or nWR controlled)
0
o
C to +70
o
C for commercial version, -40
Figure 6.1 Equivalent Test Load
DATASHEET
Test load varies dependent on VDDVARIO:
VDDVARIO = 3.3V ± 300mV: 25pF
VDDVARIO = 2.5V ± 10%: 10pF
VDDVARIO=1.8V ± 10%: 10pF
128
High-Performance 16-bit Non-PCI 10/100 Ethernet Controller with Variable Voltage I/O
o
C to +85
o
C for industrial version.
Figure 6.1
SMSC LAN9221/LAN9221i
below.
Datasheet
Note 6.1
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