IDT77V1254L25PGI IDT, Integrated Device Technology Inc, IDT77V1254L25PGI Datasheet - Page 41

• 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

UTOPIA Level 1 Bus Timing Parameters
IDT77V1254L25
RXDATA[15:0],
RXADDR[4:0]
TXDATA[15:0],
TXADDR[4:0]
RXPARITY
TXPARITY
RXCLAV
RXCLK
RXSOC
TXCLAV
TXCLK
TXSOC
RXEN
TXEN
t31
t32
t33
t34
t35
t36
t37
t39
t40
t41
Symbol
High-Z
High-Z
High-Z
High-Z
TXCLK Frequency
TXCLK Duty Cycle (% of t31)
TXDATA[7:0], TXPARITY Setup Time to TXCLK
TXDATA[7:0], TXPARITY Hold Time to TXCLK
TXSOC, TXEN[3:0] Setup Time to TXCLK
TXSOC, TXEN[3:0] Hold Time to TXCLK
TXCLK to TXCLAV[3:0] Invalid (min) and Valid (max)
RXCLK Frequency
RXCLK Duty Cycle (% of t39)
RXEN[3:0] Setup Time to RXCLK
t
t
14
16
t
t
5
7
t
3
Octet 1
t
t
t
15
17
t
t
t
21
23
6
8
t
4
Figure 37 UTOPIA Level 2 Transmit
Figure 38 UTOPIA Level 2 Receive
Parameter
Octet 2
t
t
t
21
t
18
9
23
41 of 48
High-Z
High-Z
t
t
10
19
t
t
20
22
0.2
40
4
1.5
4
1.5
2
0.2
40
4
t
1
t
12
Min.
High-Z
High-Z
t
t
10
2
t
t
50
60
—
—
—
—
10
50
60
—
13
19
Max.
MHz
%
ns
ns
ns
MHz
%
ns
ns
ns
Unit
December 2004
3505 drw 37
3505 drw 38
.