參數(shù)資料
型號: TC3299A
廠商: Electronic Theatre Controls, Inc.
英文描述: Ethernet PCMCIA Controller + COMBO Transceiver
中文描述: PCMCIA控制器組合以太網(wǎng)收發(fā)器
文件頁數(shù): 22/26頁
文件大小: 1301K
代理商: TC3299A
TC3299A
Preliminary Data Sheet
Multicast Address Registers (MAR0-MAR70)
The Multicast address registers provide filtering of multicast addresses hashed by the CRC logic. All
destination addresses are fed through the CRC logic and as the last bit of the destination address enters the
CRC, the 6 most significant bits of the CRC generator are latched. These 6 bits are then decoded by a 1 of
64 decode to index a unique filter bit (FB0-63) in the multicast address register. If the filter bit selected is set,
the multicast packet is accepted. The system designer would use a program to determine which filter bits to
set in the multicast registers. For some address found to hash to the value 50 (32H), then FB50 in MAR6
should be initialized to
1
. All multicast filter bits that correspond to multicast address accepted by the
node are then set to one. To accept all multicast packets all of the registers are set to all ones.
D7
D6
D5
D4
MAR0
FB7
FB6
FB5
FB4
MAR1
FB15
FB14
FB13
FB12
MAR2
FB23
FB22
FB21
FB20
MAR3
FB31
FB30
FB29
FB28
MAR4
FB39
FB38
FB37
FB36
MAR5
FB47
FB46
FB45
FB44
MAR6
FB55
FB54
FB53
FB52
MAR7
FB63
FB62
FB61
FB60
DMA Registers
LOCAL DMA TRANSMIT REGISTERS
15 8| 7 0
(TPSR)
TRANSMIT
PAGE
START
(TBCR0,1) TRANSMIT BYTE COUNT
LOCAL DMA RECEIVE REGISTERS
15 8| 7 0
(PSTART) PAGE
START
(PSTOP)
PAGE STOP
(CURR)
CURRENT
(BRNY)
BOUNDARY
15 8| 7 0
(CLDA0,1) CURRENT LOCAL DMA
ADDRESS
REMOTE DMA REGISTERS
15 8| 7 0
(RSAR0,1) START ADDRESS
(RBCR0,1) BYTE COUNT
(CRDA0,1) CURRENT REMOTE DMA
ADDRESS
D3
FB3
FB11
FB19
FB27
FB35
FB43
FB51
FB59
D2
FB2
FB10
FB18
FB26
FB34
FB42
FB50
FB58
D1
FB1
FB9
FB17
FB25
FB33
FB41
FB49
FB57
D0
FB0
FB8
FB16
FB24
FB32
FB40
FB48
FB56
Confidential.
Copyright
2003, IC Plus Corp.
22/26
August 27, 20003
TC3299A-DS-R30
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