dp83261 National Semiconductor Corporation, dp83261 Datasheet - Page 118

• Manufacturer Part Number: dp83261
• Description: Bmac Device Fddi Media Access Controller
• Manufacturer: National Semiconductor Corporation

Group
8 0 Electrical Characteristics
8 4 4 MAC Interface
Pin Groups
Note All setup and hold testing is done on single edges only (i e no combined setup hold testing is done for pulse signals This implies that the signal makes a
single low to high or high to low transition per cycle)
1
2
3
4
5
6
7
Symbol
T30
T31
T32
T33
T34
T35
T36
T37
T38
T39
I O
O
O
I
I
I
I
I
SAIGT SAT STRIP EA VCOPY RQEOF RQSEND RQFINAL
RQRDY
FCST RQBCN RQCLS(3 – 0) EM RQABT
RQCLM
MRD(7 – 0) MRP
TXPASS TXED TXABORT RCSTART FCRCVD SAMESA INFORCVD SAMEINFO TXRDY TXACK
TXCLASS THTDIS TXRINGOP DIAG DARCVD AFLAG SARCVD MFLAG EDRCVD VFCS VDL TKRCVD
FOERROR FRSTRIP MACRST
MID(7 – 0) MIP
MAC Control Setup (Groups
MAC Control Setup (Group
MAC Control Hold (Group
MAC Control Hold (Groups
MAC Data Setup (Group
MAC Data Hold (Group
MAC Control Sustain (Group
MAC Control Valid (Group
MAC Data Sustain (Group
MAC Data Valid (Group
Parameter
FIGURE 8-7 MAC Interface Timings
(Continued)
5)
7)
5)
3)
7)
6)
2)
1 and
1 and
6)
2 and
118
3 and
4)
4)
Pins
Min
15
30
15
15
15
2
5
6
TL F 10387 – 34
Max
45
45
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns