參數(shù)資料
型號: LAN91C94
廠商: SMSC Corporation
英文描述: ISA/PCMCIA SINGLE CHIP ETHERNET CONTROLLER WITH RAM
中文描述: 的ISA / PCMCIA的單芯片以太網(wǎng)控制器與RAM
文件頁數(shù): 43/55頁
文件大小: 482K
代理商: LAN91C94
FEAST Fast Ethernet Controller
for PCMCIA and Generic 16-Bit Applications
SMSC DS – LAN91C110 REV. B
Page 43
Rev. 09/05/02
FIGURE 11 - DRIVE SEND AND ALLOCATE ROUTINES
ALLOCATE
Issue "Allocate Memory"
Command to MMU
Read Interrupt Status Register
Enqueue Packet
Set "Ready for Packet" Flag
Return
Copy Remaining TX Data
Packet into RAM
Return Buffers to Upper Layer
Write Allocated Packet into
Packet # Register
Write Address Pointer Register
Copy Part of TX Data Packet
into RAM
Write Source Address into
Proper Location
Store Data Buffer Pointer
Clear "Ready for Packet" Flag
Enable Allocation Interrupt
Allocation
Passed
Yes
No
DRIVER SEND
Choose Bank Select
Register 2
Call ALLOCATE
Exit Driver Send
Read Allocation Result
Register
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