DS92UT16TUF Datasheet, PDF (12/86 Pages) National Semiconductor (TI) – UTOPIA-LVDS Bridge for 1.6 Gbps Bi-directional Data Transfers

6.0 Functional Description (Continued)
LineLB_LVDS
LocalLB_LVDS
Up2Down_ATM
Down2Up_ATM
TABLE 10. Loopback Options
Physical loopback at the LVDS interface. Loop entering LVDS traffic back out of the device.
Physical loopback at the LVDS interface. Loop exiting LVDS traffic back into the device.
ATM loopback. Route defined cell entering the device at the LVDS interface back out.
ATM loopback. Route defined cell entering the device at the UTOPIA interface back out.
20031606
FIGURE 7. LVDS Interface and ATM Cell Loopback Options
7.0 Signal Description
Package ball assignment in Section 20.0 Package
TABLE 11. Pin Description
Signal Name
Description
UTOPIA INTERFACE
U_TxData [15:0]
Transmit toward the PHY Layer data bus.
U_TxParity
Transmit data bus parity bit. (odd parity)
U_TxCLAV [7:1]
Transmit cell available - Extended.
U_TxCLAV [0]
Transmit cell available - Normal/Extended.
U_TxENB [7:1]
Enable Data transfers - Extended.
U_TxENB [0]
Enable Data transfers - Normal/Extended.
U_TxSOC
Transmit Start Of Cell.
U_TxAddr [4:0]
Address of MPHY device being selected.
U_RxData [15:0]
Receive from the PHY Layer data bus.
U_RxParity
Receive data bus parity bit. (odd parity)
U_RxCLAV [7:1]
Receive cell available - Extended.
U_RxCLAV [0]
Receive cell available - Normal/Extended.
U_RxENB [7:1]
Enable Data transfers - Extended.
U_RxENB [0]
Enable Data transfers - Normal/Extended.
U_RxSOC
Receive Start Of Cell.
U_RxAddr [4:0]
Address of MPHY device being selected.
U_UDBClk
UTOPIA Down Bridge - Input transfer clock.
U_UUBClk
UTOPIA Up Bridge - Output transfer clock.
Width Signal Type
Polarity
16
BiDir (Note 2)
1
BiDir (Note 2)
7
Input (Note 3) Active High
1
BiDir (Note 1) Active High
7 Output (Note 3) Active Low
1
BiDir (Note 2) Active Low
1
BiDir (Note 2) Active High
5
BiDir (Note 2)
16
BiDir (Note 1)
1
BiDir (Note 1)
7
Input (Note 3) Active High
1
BiDir (Note 1) Active High
7 Output (Note 3) Active Low
1
BiDir (Note 2) Active Low
1
BiDir (Note 1) Active High
5
BiDir (Note 2)
1
Input (Note 4)
1
Input (Note 5)
Internal
Bias
Pull Down
Pull Down
Pull Down
Pull Down
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