LAN9313-NZW SMSC, LAN9313-NZW Datasheet - Page 60
LAN9313-NZW
Manufacturer Part Number
LAN9313-NZW
Description
Ethernet ICs Three Port 10/100 Ethernet Switch
Manufacturer
SMSC
Type
Three Port Managed Ethernet Switchr
Datasheet
1.LAN9313-NZW.pdf
(399 pages)
Specifications of LAN9313-NZW
Ethernet Connection Type
10 Base-T, 100 Base-TX
Minimum Operating Temperature
0 C
Mounting Style
SMD/SMT
Product
Ethernet Switches
Number Of Transceivers
1
Standard Supported
802.3, 802.3u
Data Rate
10 Mbps, 100 Mbps
Supply Voltage (max)
3.6 V
Supply Voltage (min)
0 V
Supply Current (max)
155 mA, 270 mA
Maximum Operating Temperature
+ 70 C
Package / Case
TQFP-100
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LAN9313-NZW
Manufacturer:
Microchip Technology
Quantity:
10 000
Part Number:
LAN9313-NZW
Manufacturer:
SMSC
Quantity:
20 000
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Revision 1.7 (06-29-10)
6.2.3
Flow Control Enable Logic
Each switch fabric port (0,1,2) is provided with two flow control enable inputs per port, one for
transmission and one for reception. Flow control on transmission allows the transmitter to generate
back pressure in half-duplex mode, and pause packets in full-duplex. Flow control in reception enables
the reception of pause packets to pause transmissions.
The state of these enables is based on the state of the ports duplex and Auto-negotiation settings and
the values of the corresponding Manual Flow Control register
(MANUAL_FC_1),
Manual Flow Control Register
enable logic.
When in half-duplex mode, the transmit flow control (back pressure) enable is determined directly by
the BP_EN_x bit of the ports manual flow control register. When Auto-negotiation is disabled, or the
MANUAL_FC_x bit of the ports manual flow control register is set, the switch port flow control enables
during full-duplex are determined by the TX_FC_x and RX_FC_x bits of the ports manual flow control
Figure 6.2 Switch Fabric CSR Read Access Flow Diagram
CSR Read
Port 2 Manual Flow Control Register
Read Data
Command
Command
Register
Register
Register
Read
Write
Idle
CSR_BUSY = 0
CSR_BUSY = 1
(MANUAL_FC_MII)).
DATASHEET
60
CSR Read Auto
Increment /
Decrement
Read Data
Command
Command
Command
Register
Register
Register
Register
Write
Read
Write
data?
Idle
last
Table 6.1
CSR_BUSY = 0
Yes
(MANUAL_FC_2), or
No
CSR_BUSY = 1
Three Port 10/100 Managed Ethernet Switch with MII
(Port 1 Manual Flow Control Register
details the switch fabric flow control
Read Data
Register
SMSC LAN9313/LAN9313i
Port 0(External MII)
Datasheet
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