DS90UR124-Q1 Datasheet, PDF (4/41 Pages) Texas Instruments – 5-MHz to 43-MHz DC-Balanced 24-Bit FPD-Link II Serializer and Deserializer Chipset

DS90UR124-Q1, DS90UR241-Q1
SNLS231O – SEPTEMBER 2006 – REVISED APRIL 2015
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PIN
NO.
NAME
12
RAOFF
5, 8,
13
RES0
9
TPWDNB
I/O
LVCMOS_I
LVCMOS_I
LVCMOS_I
11
TRFB
LVCMOS_I
24
VODSEL
LVCMOS_I
LVDS SERIAL INTERFACE PINS
20
D_OUT+
LVDS_O
19
D_OUT−
LVDS_O
POWER / GROUND PINS
22
VDD
16
VDD
14
VDD
30
VDD
7
VDD
42
VDD
21
VSS
17
VSS
15
VSS
31
VSS
6
VSS
43
VSS
VDD
VDD
VDD
VDD
VDD
VDD
GND
GND
GND
GND
GND
GND
Pin Functions: PFB Package (continued)
DESCRIPTION
Randomizer Control Input Pin
RAOFF = H, Backwards compatible mode for use with DS90C124 Deserializer.
RAOFF = L; Additional randomization ON (Default), Selects 2E7 LSFR setting.
See Table 1 for more details.
Reserved. This pin must be tied LOW.
Transmitter Power Down Bar
TPWDNB = H; Transmitter is Enabled and ON
TPWDNB = L; Transmitter is in power down mode (Sleep), LVDS Driver D_OUT (+/-) Outputs are in
Tri-state stand-by mode, PLL is shutdown to minimize power consumption.
Transmitter Clock Edge Select Pin
TRFB = H; Parallel Interface Data is strobed on the Rising Clock Edge.
TRFB = L; Parallel Interface Data is strobed on the Falling Clock Edge
VOD Level Select
VODSEL = L; LVDS Driver Output is ±500 mV (R_L = 100 Ω)
VODSEL = H; LVDS Driver Output is ±900 mV (R_L = 100 Ω)
For normal applications, set this pin LOW. For long cable applications where a larger VOD is
required, set this pin HIGH.
Transmitter LVDS True (+) Output.
This output is intended to be loaded with a 100-Ω load to the D_OUT+ pin. The interconnect should
be AC coupled to this pin with a 100-nF capacitor.
Transmitter LVDS Inverted (-) Output
This output is intended to be loaded with a 100-Ω load to the D_OUT- pin. The interconnect should
be AC coupled to this pin with a 100-nF capacitor.
Analog Voltage Supply, LVDS Output POWER
Analog Voltage Supply, VCO POWER
Analog Voltage Supply, PLL POWER
Digital Voltage Supply, Serializer POWER
Digital Voltage Supply, Serializer Logic POWER
Digital Voltage Supply, Serializer INPUT POWER
Analog Ground, LVDS Output GROUND
Analog Ground, VCO GROUND
Analog Ground, PLL GROUND
Digital Ground, Serializer GROUND
Digital Ground, Serializer Logic GROUND
Digital Ground, Serializer Input GROUND
4
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