MU9C8148
SWITCHING CHARACTERISTICS
Arbitration Switching Characteristics
No. Symbol Parameter
Min
Typ.
Max
17
Units
ns
Notes
1
2
3
tCHRQL /RQ LOW from RXC HIGH
tCHRQH /RQ HIGH from RXC HIGH
tRQLCH /RQI to RXC Setup Time
16
ns
3
ns
MAC Interface Switching Characteristics
No. Symbol Parameter
Min
Typ.
Max
18
Units
ns
Notes
4
5
6
7
tCHMFH XMATCH,XFAIL HIGH from RXC HIGH
tCHMFL XMATCH,XFAIL LOW from RXC HIGH
18
ns
tCHFLL
tCHFLH
/FLUSH LOW from RXC HIGH
/FLUSH HIGH from RXC HIGH
18
ns
18
ns
Transceiver Interface Switching Characteristics
No. Symbol Parameter
Min
3
Typ.
Max
Units
Notes
8
9
tRDCH
tCLCL
RXD to RXC Setup Time
RXC period
ns
30
31.25
125
ns
ns
16 Mbit/s TR
4 Mbit/s TR
10
11
12
tCLCH
tCHCL
tCHRX
RXC LOW Period
11
11
3
ns
ns
ns
RXC HIGH Period
RXD from RXC Hold Time
SWITCHING TEST FIGURES
5.0 Volts
5.0 Volts
R1 = 500 ohms
R1 = 500 ohms
C1 = 5 pF
To Device
Under Test
To Device
Under Test
C1 = 30 pF
(includes jig)
R2 = 333 ohms
R2 = 333 ohms
Fig. 2: TTL Switching Test Load
Fig. 3: Three-state Test Load
5.0 Volts
620 ohms
INPUT
WAVEFORM
0 V
To Device
Under Test
V
50% AMPLITUDE
POINT
IL(MIN)
30 pF
10 ns
Fig. 4: Open-drain Test Load
Fig. 5: Input Signal Waveform
Rev. 5.5 Draft web
17
MUSIC [ MUSIC SEMICONDUCTORS ]
