VITESSE
SEMICONDUCTOR CORPORATION
1.6 Gb/s 32x32
Crosspoint Switch
Data Sheet
VSC851
Table 2: Configuration, Broadcast, FlowThru Mode.
Parameters
Description
Min Typ Max Units
Conditions
TLSW
LSTROBE pulse width
5
—
—
nS —
TGSW
GSTROBE pulse width
5
—
—
nS —
TGSZ
GSTROBE to Z+/Z- Outputs Delay
1.5
—
5.0
nS —
TLSZ
LSTROBE to Z+/Z- Outputs Delay
2
—
6.0
nS GSTROBE high
TALSSU
A[4:0] to LSTROBE setup time
3.5
—
—
nS —
TALSH
A[4:0] to LSTROBE hold time
1
—
—
nS —
TDLSSU
D[4:0] to LSTROBE setup time
3.5
—
—
nS —
TDLSH
D[4:0] to LSTROBE hold time
1
—
—
nS —
TGLSU
GSTROBE to LSTROBE setup time
2.5
—
—
nS —
TGLH
GSTROBE to LSTROBE hold time
2
—
—
nS —
TBLSSU
BROADCAST to LSTROBE setup time
4
—
—
nS —
TBLSH
BROADCAST to LSTROBE hold time
1
—
—
nS —
TFLSSU
FLOWTHRU to LSTROBE setup time
4
—
—
nS —
TFLSH
FLOWTHRU to LSTROBE hold time
1
—
—
nS —
Figure 2: Configuration Mode Timing
A[0:4]
(Output Address)
LSTROBE
D[0:4]
(Input Address)
GSTROBE
I+ [0:15]
I- [0:15]
Z+ [0:31]
Z- [0:31]
TALSSU
TDLSSU
TALSH
TLSW
TDLSH
TGLSU
TGSW
TGSZ
TLSZ
TLSW
TGLH
TDLY
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© VITESSE SEMICONDUCTOR CORPORATION
741 Calle Plano, Camarillo, CA 93012 • 805/388-3700 • FAX: 805/987-5896
G52167-0 Rev. 4.1
10/21/99