com20020-5 Standard Microsystems Corp., com20020-5 Datasheet - Page 32

• Manufacturer Part Number: com20020-5
• Description: Com20020-5 Ulanc Universal Local Area Network Controller With 2k X 8 On-board Ram
• Manufacturer: Standard Microsystems Corp.

ADDRESS
COUNT
255
511
0
1
2
(DID = 0 FOR BROADCASTS)
N = DATA PACKET LENGTH
SID = SOURCE ID
DID = DESTINATION ID
FIGURE 7 - RAM BUFFER PACKET CONFIGURATION
SHORT PACKET
COUNT = 256-N
DATA BYTE N-1
DATA BYTE N
DATA BYTE 1
DATA BYTE 2
NOT USED
NOT USED
FORMAT
SID
DID
32
ADDRESS
COUNT
511
0
1
2
3
COUNT = 512-N
LONG PACKET
DATA BYTE N-1
DATA BYTE N
DATA BYTE 1
DATA BYTE 2
NOT USED
FORMAT
SID
DID
0