IDT77V1254L25PGI IDT, Integrated Device Technology Inc, IDT77V1254L25PGI Datasheet - Page 43

• Manufacturer Part Number: IDT77V1254L25PGI
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of IDT77V1254L25PGI

• Data Rate: 25.6/51.2Mbps
• Number Of Channels: 4
• Type Of Atm Phy Interface: DPI/UTOPIA
• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (min): 3V
• Operating Supply Voltage (max): 3.6V
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Pin Count: 144
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Not Compliant

Utility Bus Read Cycle
IDT77V1254L25
Pn_RFRM
Pn_RD[3:0]
Pn_TD[3:0]
Pn_TFRM
Pn_RCLK
Pn_TCLK
DPICLK
t61
t62
t63
t64
t65
Symbol
t
53
Pn_RCLK Period
Pn_RCLK High Time
Pn_RCLK Low Time
Pn_RCLK to Pn_TFRM Invalid (min) and Valid (max)
Pn_RCLK to Pn_RD Invalid (min) and Valid (max)
Tas
Tcsrd
Tah
Tapw
Ttria
Name
t
61
t
54
10
0
5
10
0
Min.
t
51
t
t
t
55
64
Parameter
62
—
—
—
—
—
Max.
Figure 41 DPI Transmit
Figure 42 DPI Receive
t
t
63
56
t
52
43 of 48
MHz
%
ns
ns
ns
Unit
t
t
57
65
Address setup to ALE
Chip select to read enable
Address hold to ALE
ALE min pulse width
Address tri-state to RD assert
Description
25
10
10
2
2
Min.
—
—
—
12
12
Max.
ns
ns
ns
ns
ns
Unit
3505 drw 42
3505 drw 41
December 2004
.
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