DS90C124_13 Datasheet, PDF (6/31 Pages) Texas Instruments – 5-MHz to 35-MHz DC-Balanced 24-Bit FPD-Link II Serializer and Deserializer

DS90C124, DS90C241
SNLS209L – NOVEMBER 2005 – REVISED APRIL 2013
www.ti.com
Serializer Timing Requirements for TCLK
Over recommended operating supply and temperature ranges unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
t_TCP
t_TCIH
t_TCIL
t_CLKT
t_JIT
Transmit Clock Period
Transmit Clock High Time
Transmit Clock Low Time
TCLK Input Transition Time
TCLK Input Jitter
(Figure 5)
(Figure 4)
(1)
28.6
0.4T
0.4T
T
0.5T
0.5T
3
(1) t_JIT (at BER of 10e-9) specifies the allowable jitter on TCLK. t_JIT not included in TxOUT_E_O parameter.
Max
200
0.6T
0.6T
6
33
Units
ns
ns
ns
ns
ps (RMS)
Serializer Switching Characteristics
Over recommended operating supply and temperature ranges unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
t_LLHT
t_LHLT
LVDS Low-to-High Transition Time
LVDS High-to-Low Transition Time
R_L = 100Ω, (Figure 3)
C_L = 10 pF to GND
VODSEL = L
0.6
ns
0.6
ns
t_DIS
DIN (23:0) Setup to TCLK
R_L = 100Ω,
5
ns
t_DIH
DIN (23:0) Hold from TCLK
C_L = 10 pF to GND
(1)
5
ns
t_HZD
DOUT ± HIGH to TRI-STATE Delay
t_LZD
DOUT ± LOW to TRI-STATE Delay
t_ZHD
DOUT ± TRI-STATE to HIGH Delay
t_ZLD
DOUT ± TRI-STATE to LOW Delay
t_PLD
Serializer PLL Lock Time
t_SD
Serializer Delay
TxOUT_ TxOUT_Eye_Opening
E_O
(respect to ideal)
R_L = 100Ω,
C_L = 10 pF to GND
(Figure 6)⁽²⁾
R_L = 100Ω, (Figure 7)
R_L = 100Ω, (Figure 8)
VODSEL = L, TRFB = H
R_L = 100Ω, (Figure 8)
VODSEL = L, TRFB = L
5–35 MHz
(Figure 9)^{(1) (3) (4)}
15
ns
15
ns
200
ns
200
ns
10
ms
3.5T +
2.85
3.5T + 10
ns
3.5T +
2.85
3.5T + 10
ns
0.75
UI ⁽⁵⁾
(1) Specification is ensured by characterization and is not tested in production.
(2) When the Serializer output is tri-stated, the Deserializer will lose PLL lock. Resynchronization MUST occur before data transfer.
(3) t_JIT (at BER of 10e-9) specifies the allowable jitter on TCLK. t_JIT not included in TxOUT_E_O parameter.
(4) TxOUT_E_O is affected by pre-emphasis value.
(5) UI – Unit Interval, equivalent to one ideal serialized data bit width. The UI scales with frequency.
6
Submit Documentation Feedback
Copyright © 2005–2013, Texas Instruments Incorporated
Product Folder Links: DS90C124 DS90C241