IDT77V106L25TFI IDT, Integrated Device Technology Inc, IDT77V106L25TFI Datasheet - Page 8

• Manufacturer Part Number: IDT77V106L25TFI
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of IDT77V106L25TFI

• Data Rate: 25.6/51.2Mbps
• Number Of Channels: 1
• Type Of Atm Phy Interface: 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: 64
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Not Compliant

PHY-ATM INTERFACE
standardized by the ATM Forum. It is used for transferring ATM cells and has
separate transmit and receive channels and specific handshaking protocols.
It is defined in ATM Forum documents af-phy-0017 and af-phy-0039.
The Utopia signals are summarized below:
Transmit and receive both utilize free running clocks, which are inputs to the 77V106. All utopia signals are timed to these clocks.
IDT77V106L25
UTOPIA Level 1 is a Physical (PHY) Layer to ATM Layer interface
RX +
RX
Decoding
NRZI
Synthesizer
32.0MHz
OSC
& PLL
Clock
5
TXDATA[7:0]
TXPARITY
TXSOC
TXEN
TXCLAV
TXCLK
RXDATA[7:0]
RXPARITY
RXSOC
RXEN
RXCLAV
RXCLK
Figure 3. Receive Block Diagram
Decoding
5b/4b
PHY-ATM
Interface
Control -
RECV
ATM to PHY
ATM to PHY
ATM to PHY
ATM to PHY
PHY to ATM
ATM to PHY
PHY to ATM
PHY to ATM
PHY to ATM
ATM to PHY
PHY to ATM
ATM to PHY
8
a single 8-bit data bus in the receive (PHY-to-ATM) direction. In addition to the
data bus, each direction also includes a single optional parity bit and several
handshaking signals. Please note that the transmit bus and the receive bus
operate completely independently.
3 Cells
There is a single 8-bit data bus in the transmit (ATM-to-PHY) direction, and
Start of Cell
4
4
RXRef
Command
Detection,
& Decode
Removal,
Byte
UTOPIA
Interface
Reset
4
4
Scramble
Nibble
PRNG
Scrambler
De-
3505 drw 06
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