COM20022V-HT 查看數據表（PDF） - SMSC -> Microchip

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COM20022V-HT

10Mbps ARCNET controller with 2Kx8 on-board RAM

SMSC -> Microchip 

ADDRESS

0

1

2

COUNT

255

511

SHORT PACKET

FORMAT

SID

DID

COUNT = 256-N

NOT USED

DATA BYTE 1

DATA BYTE 2

DATA BYTE N-1

DATA BYTE N

NOT USED

ADDRESS

0

1

2

3

COUNT

511

LONG PACKET

FORMAT

SID

DID

0

COUNT = 512-N

NOT USED

DATA BYTE 1

DATA BYTE 2

DATA BYTE N-1

DATA BYTE N

N = DATA PACKET LENGTH

SID = SOURCE ID

DID = DESTINATION ID

(DID = 0 FOR BROADCASTS)

FIGURE 14 - RAM BUFFER PACKET CONFIGURATION

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