DS92UT16 Datasheet, PDF (44/111 Pages) Texas Instruments – DS92UT16TUF UTOPIA-LVDS Bridge for 1.6 Gbps Bi-directional Data Transfers

DS92UT16
OBSOLETE
SNOS992E – JANUARY 2002 – REVISED APRIL 2013
www.ti.com
ECC Receive on Port A and Port B: Device 1 communicating with Device 2 and Device 3.
See Figure 18.
Device 1: For the ECC to communicate across both Link A and Link B, the ECCB and ECCA bits of the LKSC
register are both set. The incoming valid ESS signals received over Link A “RxA valid ESS” and Link B “RxB
valid ESS” are both used by the ECC transmit section in Tx.
In this case, when an ECC message is transmitted, both the “RxA valid ESS” and “RxB valid ESS” signals must
be used to indicate that the message has been successfully received by both Device 2 and Device 3 before a
new message can be transmitted. So ECC communications occur over both Link A and Link B.
Device 2 and 3: are configured as above for communicating with only Device 1.
Note that, when Device 1 wants to transmit a new message it must wait until both Device 2 and Device 3 indicate
that they have received the last message. When Device 2 wants to transmit a new message it must only wait
until Device 1 indicates that it has received the last message. Similarly for Device 3 transmitting a new message
it must only wait until Device 1 indicates that it has received the last message
Figure 18. ECC Signaling with Active and Standby Links
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