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參數(shù)資料
| 型號： | LAN91C96I-MS |
| 廠商： | STANDARD MICROSYSTEMS CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | NON-PCI SINGLE-CHIP FULL DUPLES ETHERNET CONTROLLER |
| 中文描述： | 2 CHANNEL(S), 10M bps, LOCAL AREA NETWORK CONTROLLER, PQFP100 |
| 封裝： | LEAD FREE, QFP-100 |
| 文件頁數(shù)： | 41/110頁 |
| 文件大小： | 655K |
| 代理商： | LAN91C96I-MS |
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Non-PCI Single-Chip Full Duplex Ethernet Controller
SMSC DS – LAN91C96I
Page 41
Rev.
11/18/2004
DATASHEET
I/O SPACE - BANK0
OFFSET
8
NAME
TYPE
SYMBOL
MIR
MEMORY INFORMATION REGISTER
READ ONLY
For software compatibility with other LAN9000 parts all memory-related information is represented in 256 x
M byte units, where the multiplier M is determined by the MCR upper byte. M equals “1” for the
LAN91C96I.
FREE MEMORY AVAILABLE (in BYTES* 256* M)
0
1
MEMORY SIZE (in BYTES* 256* M)
0
1
0
0
1
0
0
0
0
0
1
0
0
0
FREE MEMORY AVAILABLE - This register can be read at any time to determine the amount of free
memory. The register defaults to the MEMORY SIZE upon reset or upon the RESET MMU command.
MEMORY SIZE - This register can be read to determine the total memory size, and will always read 18H
(6144 bytes) for the LAN91C96I.
MEMORY SIZE REGISTER
FFH
40H
12H
M
1
1
1
ACTUAL MEMORY
64 kbytes
16 kbytes
4608 bytes
LAN91C90
LAN91C90
LAN91C92/
LAN91C94
LAN91C95
LAN91C96I
LAN91C100
18H
18H
FFH
1
1
2
6144 bytes
6144 bytes
128 kbytes
I/O SPACE - BANK0
OFFSET
A
NAME
TYPE
SYMBOL
MCR
MEMORY CONFIGURATION
REGISTER
lower byte READ/WRITE
upper byte READ ONLY
Memory Size Multiplier “M”
0
0
1
1
0
0
1
1
Memory Reserved for Transmit (in BYTES * 256 * M)
0
0
0
0
0
0
0
0
MEMORY RESERVED FOR TRANSMIT - Programming this value allows the host CPU to reserve
memory to be used later for transmit, limiting the amount of memory that receive packets can use up.
When programmed for zero, the memory allocation between transmit and receive is completely dynamic.
When programmed for a non-zero value, the allocation is dynamic if the free memory exceeds the
programmed value, while receive allocation requests are denied if the free memory is less or equal to the
programmed value. This register defaults to zero upon reset. It is not affected by the RESET MMU
command.
The value written to the MCR is a reserved memory space IN ADDITION TO ANY MEMORY
CURRENTLY IN USE. If the memory allocated for transmit plus the reserved space for transmit is required
to be constant (rather than grow with transmit allocations) the CPU should update the value of this register
after allocating or releasing memory.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LAN91C96I-MU | 功能描述:以太網(wǎng) IC Non-PCI 10 Mbps Ethernet MAC RoHS:否 制造商:Micrel 產(chǎn)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 |
| LAN91C96IQFP | 功能描述:以太網(wǎng) IC Non-PCI 10 Mbps Ethernet MAC RoHS:否 制造商:Micrel 產(chǎn)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 |
| LAN91C96ITQFP | 功能描述:以太網(wǎng) IC Non-PCI 10 Mbps Ethernet MAC RoHS:否 制造商:Micrel 產(chǎn)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 |
| LAN91C96-MS | 功能描述:以太網(wǎng) IC Non-PCI 10 Mbps Ethernet MAC RoHS:否 制造商:Micrel 產(chǎn)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 |
| LAN91C96-MU | 功能描述:以太網(wǎng) IC Ethernet IC 10Mbps MAC PHY RoHS:否 制造商:Micrel 產(chǎn)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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