LAN9311-NZW Standard Microsystem (Smsc), LAN9311-NZW Datasheet - Page 108
LAN9311-NZW
Manufacturer Part Number
LAN9311-NZW
Description
Ethernet Switch 2-Port 10Mbps/100Mbps 128-Pin XVTQFP
Manufacturer
Standard Microsystem (Smsc)
Datasheet
1.LAN9311-NU.pdf
(460 pages)
Specifications of LAN9311-NZW
Package
128XVTQFP
Phy/transceiver Interface
MII
Number Of Primary Switch Ports
2
Maximum Data Rate
100 Mbps
Internal Memory Buffer Size
32 KB
Vlan Support
Yes
Power Supply Type
Analog
Minimum Single Supply Voltage
3 V
Maximum Single Supply Voltage
3.6 V
Maximum Supply Current
0.295 A
Maximum Power Dissipation
1070 mW
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Revision 1.7 (06-29-10)
8.5.5
D[15:0] (OUTPUT)
END_SEL
nCS, nRD
A[x:5]
A[4:1]
PIO Burst Reads
In this mode, performance is improved by allowing up to 16 WORD read cycles back-to-back. PIO
burst reads can be performed using Chip Select (nCS) or Read Enable (nRD). A PIO Burst Read
begins when both nCS and nRD are asserted. Either or both of these control signals must de-assert
between bursts for the period specified in
page
asserted and de-asserted in any order. Read data is valid as indicated in the functional timing diagram
in
Note: A[1] must toggle during burst reads. Fresh data is supplied each time A[1] is toggled.
The endian select signal (END_SEL) has the same timing characteristics as the upper address lines.
Please refer to
specifications for PIO burst read operations.
Note: PIO burst reads are only supported for the RX Data FIFO. Burst reads from other registers are
Figure
448. The burst cycle ends when either or both nCS and nRD are de-asserted. They may be
not supported.
8.4.
Figure 8.4 Functional Timing for PIO Burst Read Operation
Section 15.5.5, "PIO Burst Read Cycle Timing," on page 448
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108
Two Port 10/100 Managed Ethernet Switch with 16-Bit Non-PCI CPU Interface
Table 15.9, “PIO Burst Read Cycle Timing Values,” on
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SMSC LAN9311/LAN9311i
for the AC timing
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Datasheet
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