DS92LV0411 Datasheet, PDF(35/40 Page) National Semiconductor (TI) – 5 - 50 MHz Channel Link II Serializer/Deserializer with LVDS Parallel Interface

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DS92LV0411 Datasheet, PDF (35/40 Pages) National Semiconductor (TI) – 5 - 50 MHz Channel Link II Serializer/Deserializer with LVDS Parallel Interface

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Power Up Requirements and PDB Pin

The VDD (VDDn and VDDIO) supply ramp should be faster than

1.5 ms with a monotonic rise. If slower then 1.5 ms then a

capacitor on the PDB pin is needed to ensure PDB arrives

after all the VDD have settled to the recommended operating

voltage. When PDB pin is pulled to VDDIO, it is recommended

to use a 10 kÎ© pull-up and a 22 uF cap to GND to delay the

PDB input signal.

Transmission Media

The DS92LV0411 and the companion deserializer chipset is

intended to be used in a point-to-point configuration, through

a PCB trace, or through twisted pair cable. The DS92LV0411

provide internal terminations providing a clean signaling en-

vironment. The interconnect for LVDS should present a dif-

ferential impedance of 100 Ohms. Use cables and connectors

that have matched differential impedance to minimize

impedance discontinuities. Shielded or un-shielded cables

may be used depending upon the noise environment and ap-

plication requirements.

Live Link Insertion

The serializer and deserializer devices support live link or ca-

ble hot plug applications. The automatic receiver lock to ran-

dom data âplug & goâ hot insertion capability allows the

DS92LV0412 to attain lock to the active data stream during a

live cable insertion event.

Alternate Color / Data Mapping

Color Mapped data Pin names are provided to specify a rec-

ommended mapping for 24-bit and 18-bit Applications. When

connecting to earlier generations of Channel Link II deserial-

izer devices, a color mapping review is recommended to

ensure the correct connectivity is obtained. Table 14provides

examples for interfacing between DS92LV0411 and different

deserializers.

TABLE 14. Serializer Alternate Color / Data Mapping

Channel Link

RxIN3

RxIN2

RxIN1

RxIN0

Bit Number

Bit 26

Bit 25

Bit 24

Bit 23

Bit 22

Bit 21

Bit 20

Bit 19

Bit 18

Bit 17

Bit 16

Bit 15

Bit 14

Bit 13

Bit 12

Bit 11

Bit 10

Bit 9

Bit 8

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

N/A

RGB (LSB

Example)

DS92LV0411

Settings

MAPSEL = 0

DS92LV2412 DS90UR124 DS99R124Q DS90C124

B6ROUT10

N/A

CONFIG [1:0] = 00

N/A

ROUT20 TxOUT2

ROUT19

ROUT18

ROUT17

ROUT16

ROUT15

ROUT14

ROUT13 TxOUT1

ROUT12

ROUT11

ROUT10

ROUT9

ROUT8

ROUT7

ROUT6

TxOUT0

ROUT5

ROUT4

ROUT3

ROUT2

ROUT1

ROUT0

ROUT23

OS2

ROUT22

OS1

ROUT21

OS0

CONFIG [1:0] = 10

ROUT20