LAN9311-NU Standard Microsystems (SMSC), LAN9311-NU Datasheet - Page 30
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LAN9311-NU
Manufacturer Part Number
LAN9311-NU
Description
TWO PORT 10/100 MANAGED ETHERNET SWITCH
Manufacturer
Standard Microsystems (SMSC)
Datasheet
1.LAN9311-NU.pdf
(460 pages)
Specifications of LAN9311-NU
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Revision 1.7 (06-29-10)
122,125
25,26,
28-32,
34-38,
45,47,
49-53,
41-44
55,56
PIN
120
121
118
PIN
57
58
59
Analog Power
+3.3V Master
+1.8V Power
+1.8V Power
+3.3V Port 2
Read Strobe
Write Strobe
Bias Power
Chip Select
Transmitter
Transmitter
Host Bus
Host Bus
Address
Supply
Supply
Supply
Supply
NAME
NAME
Port 2
Port 1
Data
Table 3.3 LAN Port 1 & 2 Power and Common Pins (continued)
VDD33BIAS
VDD18TX2
VDD18TX1
VDD33A2
SYMBOL
SYMBOL
D[15:0]
A[9:1]
nWR
nRD
nCS
Table 3.4 Host Bus Interface Pins
DATASHEET
BUFFER
BUFFER
TYPE
TYPE
IS/O8
IS
IS
IS
IS
P
P
P
P
30
Two Port 10/100 Managed Ethernet Switch with 16-Bit Non-PCI CPU Interface
+3.3V Port 2 Analog Power Supply
Refer to the LAN9311/LAN9311i application note
for additional connection information.
+3.3V Master Bias Power Supply
Refer to the LAN9311/LAN9311i application note
for additional connection information.
Port 2 Transmitter +1.8V Power Supply: This pin
is supplied from the internal PHY voltage regulator.
This pin must be tied to the VDD18TX1 pin for
proper operation.
Refer to the LAN9311/LAN9311i application note
for additional connection information.
+1.8V Port 1 Transmitter Power Supply: This pin
must be connected directly to the VDD18TX2 pin
for proper operation.
Refer to the LAN9311/LAN9311i application note
for additional connection information.
Host Bus Data: Bits 15-0 of the Host Bus data
port.
Note:
Host Bus Address: 9-bit Host Bus Address Port
used to select Internal CSR’s and TX and RX
FIFO’s.
Note:
Read Strobe: Active low strobe to indicate a read
cycle. This signal is qualified by the nCS chip
select.
Write Strobe: Active low strobe to indicate a write
cycle. This signal is qualified by the nCS chip
select.
Chip Select: Active low signal used to qualify read
and write operations.
Big and little endianess is supported.
The A0 bit is not used because the
LAN9311/LAN9311i must be accessed on
WORD boundaries.
DESCRIPTION
DESCRIPTION
SMSC LAN9311/LAN9311i
Datasheet
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