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參數(shù)資料
| 型號： | LAN9116 |
| 廠商： | SMSC Corporation |
| 英文描述： | Highly Efficient Single-Chip 10/100 Non-PCI Ethernet Controller |
| 中文描述： | 高效的單芯片10/100非PCI以太網控制器 |
| 文件頁數(shù)： | 87/126頁 |
| 文件大?。?/td> | 831K |
| 代理商： | LAN9116 |
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Highly Efficient Single-Chip 10/100 Non-PCI Ethernet Controller
Datasheet
5.3.22
SMSC LAN9116
87
Revision 1.1 (05-17-05)
DATASHEET
AFC_CFG – Automatic Flow Control Configuration Register
This register configures the mechanism that controls both the automatic, and software-initiated
transmission of pause frames and back pressure.
Note:
The LAN9116 will not transmit pause frames or assert back pressure if the transmitter is
disabled.
Offset:
ACh
Size:
32 bits
BITS
DESCRIPTION
TYPE
DEFAULT
31:24
Reserved
RO
-
23:16
Automatic Flow Control High Level (AFC_HI).
Specifies, in multiples of
64 bytes, the level at which flow control will trigger. When this limit is
reached the chip will apply back pressure or will transmit a pause frame as
programmed in bits [3:0] of this register.
During full-duplex operation only a single pause frame is transmitted when
this level is reached. The pause time transmitted in this frame is
programmed in the FCPT field of the FLOW register in the MAC CSR space.
During half-duplex operation each incoming frame that matches the criteria
in bits [3:0] of this register will be jammed for the period set in the
BACK_DUR field.
R/W
00h
15:8
Automatic Flow Control Low Level (AFC_LO).
Specifies, in multiples of
64 bytes, the level at which a pause frame is transmitted with a pause time
setting of zero. When the amount of data in the RX data FIFO falls below
this level the pause frame is transmitted. A pause time value of zero
instructs the other transmitting device to immediately resume transmission.
The zero time pause frame will only be transmitted if the RX data FIFO had
reached the AFC_HI level and a pause frame was sent. A zero pause time
frame is sent whenever automatic flow control in enabled in bits [3:0] of this
register.
Note:
When automatic flow control is enabled the AFC_LO setting must
always be less than the AFC_HI setting.
R/W
00h
7:4
Backpressure Duration (BACK_DUR).
When the LAN9116 automatically
asserts back pressure, it will be asserted for this period of time. This field
has no function and is not used in full-duplex mode. Please refer to
Table 5.5
, describing Backpressure Duration bit mapping for more
information.
R/W
0h
3
Flow Control on Multicast Frame (FCMULT).
When this bit is set, the
LAN9116 will assert back pressure when the AFC level is reached and a
multicast frame is received. This field has no function in full-duplex mode.
R/W
0
2
Flow Control on Broadcast Frame (FCBRD).
When this bit is set, the
LAN9116 will assert back pressure when the AFC level is reached and a
broadcast frame is received. This field has no function in full-duplex mode.
R/W
0
1
Flow Control on Address Decode (FCADD).
When this bit is set, the
LAN9116 will assert back pressure when the AFC level is reached and a
frame addressed to the LAN9116 is received. This field has no function in
full-duplex mode.
R/W
0
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相關代理商/技術參數(shù) |
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|---|---|
| LAN9116-MD | 功能描述:以太網 IC Efficient Sngl Chip 10/100 Ethrnt RoHS:否 制造商:Micrel 產品:Ethernet Switches 收發(fā)器數(shù)量:2 數(shù)據(jù)速率:10 Mb/s, 100 Mb/s 電源電壓-最大:1.25 V, 3.45 V 電源電壓-最小:1.15 V, 3.15 V 最大工作溫度:+ 85 C 封裝 / 箱體:QFN-64 封裝:Tray |
| LAN9116-MT | 功能描述:以太網 IC Ethernet IC 32bit Superior Perf RoHS:否 制造商:Micrel 產品:Ethernet Switches 收發(fā)器數(shù)量:2 數(shù)據(jù)速率:10 Mb/s, 100 Mb/s 電源電壓-最大:1.25 V, 3.45 V 電源電壓-最小:1.15 V, 3.15 V 最大工作溫度:+ 85 C 封裝 / 箱體:QFN-64 封裝:Tray |
| LAN9117 | 制造商:SMSC 制造商全稱:SMSC 功能描述:HIGH PERFORMANCE SINGLE-CHIP 10/100 NON-PCI ETHERNET CONTROLLER |
| LAN9117-MD | 功能描述:以太網 IC HiPerfrm Sngl-Chip 10/100 Ethrnt RoHS:否 制造商:Micrel 產品:Ethernet Switches 收發(fā)器數(shù)量:2 數(shù)據(jù)速率:10 Mb/s, 100 Mb/s 電源電壓-最大:1.25 V, 3.45 V 電源電壓-最小:1.15 V, 3.15 V 最大工作溫度:+ 85 C 封裝 / 箱體:QFN-64 封裝:Tray |
| LAN9117-MT | 功能描述:以太網 IC HiPerfrm Sngl-Chip 10/100 Ethrnt RoHS:否 制造商:Micrel 產品:Ethernet Switches 收發(fā)器數(shù)量:2 數(shù)據(jù)速率:10 Mb/s, 100 Mb/s 電源電壓-最大:1.25 V, 3.45 V 電源電壓-最小:1.15 V, 3.15 V 最大工作溫度:+ 85 C 封裝 / 箱體:QFN-64 封裝:Tray |
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