IDT77V1254L25PGI IDT, Integrated Device Technology Inc, IDT77V1254L25PGI Datasheet - Page 42

• 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

DPI Bus Timing Parameters
IDT77V1254L25
TXDATA[7:0],
RXDATA[7:0],
TXCLAV[3:0]
RXCLAV[3:0]
TXPARITY
RXPARITY
TXEN[3:0]
RXEN[3:0]
TXCLK
TXSOC
RXSOC
RXCLK
t42
t43
t44
t45
t46
t47
Symbol
t51
t52
t53
t54
t55
t56
t57
Symbol
High-Z
High-Z
RXEN[3:0] Hold Time to RXCLK
RXCLK to RXCLAV[3:0] Invalid (min) and Valid (max)
RXCLK to RXSOC High-Z
RXCLK to RXSOC Low-Z (min) and Valid (max)
RXCLK to RXDATA, RXPARITY High-Z
RXCLK to RXDATA, RXPARITY Low-Z (min) and Valid (max)
DPICLK Frequency
DPICLK Duty Cycle (% of t51)
DPICLK to Pn_TCLK Propagation Delay
Pn_TFRM Setup Time to Pn_TCLK
Pn_TFRM Hold Time to Pn_TCLK
Pn_TD[3:0] Setup Time to Pn_TCLK
Pn_TD[3:0] Hold Time to Pn_TCLK
t
35
t
t
41
33
Octet 1
t
36
t
42
t
t
t
45
34
47
Figure 39 UTOPIA Level 1 Transmit
Parameter
Figure 40 UTOPIA Level 1 Receive
Parameter
Octet 2
t
45
t
47
42 of 48
t
37
t
t
44
46
0.2
40
2
4
1
4
1
t
31
t
1.5
2
2
2
2
2
39
Min.
Min.
High-Z
High-Z
t
32
t
t
50
60
14
—
—
—
—
40
43
Max.
—
10
10
10
10
10
Max.
MHz
%
ns
ns
ns
ns
ns
Unit
ns
ns
ns
ns
ns
ns
Unit
December 2004
3505 drw 39
3505 drw 40