參數(shù)資料
型號(hào): LAN91C100-FD
廠商: STANDARD MICROSYSTEMS CORP
元件分類: 微控制器/微處理器
英文描述: FEAST FAST ETHERNET CONTROLLER WITH FULL DUPLEX CAPABILITY
中文描述: 2 CHANNEL(S), 100M bps, LOCAL AREA NETWORK CONTROLLER, PQFP208
封裝: QFP-208
文件頁(yè)數(shù): 45/79頁(yè)
文件大小: 585K
代理商: LAN91C100-FD
FEAST Fast Ethernet Controller with Full Duplex Capability
SMSC DS – LAN91C100FD Rev. D
Page 45
Rev.
10/14/2002
PRELIMINARY
ISR
Save Bank Select & Address
Ptr Registers
Mask SMC91C100FD
Interrupts
Read Interrupt Register
Call TX INTR or TXEMPTY
INTR
TX INTR
Get Next TX
RX INTR
Yes
No
No
Yes
Call RXINTR
ALLOC INTR
No
Yes
Write Allocated Pkt # into
Packet Number Reg.
Write Ad Ptr Reg. & Copy Data
& Source Address
Enqueue Packet
Packet
Available for
Transmission
Yes
No
Call ALLOCATE
EPH INTR
No
Yes
Call EPH INTR
Set "Ready for Packet" Flag
Return Buffers to Upper Layer
Disable Allocation Interrupt
Mask
Restore Address Pointer &
Bank Select Registers
Unmask SMC91C100FD
Interrupts
Exit ISR
Figure 5.3 - Interrupt Service Routine
相關(guān)PDF資料
PDF描述
LAN91C100FD FEAST FAST ETHERNET CONTROLLER WITH FULL DUPLEX CAPABILITY
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