FIN3385 Fairchild Semiconductor, FIN3385 Datasheet - Page 5

• Manufacturer Part Number: FIN3385
• Description: Fin3385 * Fin3383 * Fin3384 * Fin3386 Low Voltage 28-bit Flat Panel Display Link Serializers/deserializers
• Manufacturer: Fairchild Semiconductor

Transmitter and Receiver Power-Up/Power-Down Operation Truth Table
The outputs of the transmitter remain in the High-Impedance state until the power supply reaches 2V. The following table
shows the operation of the transmitter during power-up and power-down and operation of the PwrDn pin.
H
L
P
X
Z
Note 3: If the transmitter is powered up and PwrDn is inactive HIGH and the clock input goes to any state LOW, HIGH, or Z then the internal PLL will go to a
known low frequency and stay until the clock starts normal operation again.
Note 4: If the input is terminated and un-driven (Z) or shorted or open. (fail safe condition)
Note 5: For PwrDn or fail safe condition the RxCLKOut pin will go LOW for Panel Link devices and HIGH for Channel Link devices.
Note 6: Shorted here means (
Ground or V
(0V to 2.4V) then the input signal is still recognized and the part will respond normally.
LOW Logic Level
High-Impedance
HIGH Logic Level
Last Valid State
Don’t Care
Transmitter
Receiver
CC
) with no other Current/Voltage sources (noise) applied. If the V
TxCLKOut
RxCLKOut
RxCLKIn
TxCLKIn
PwrDn
PwrDn
TxOut
RxOut
RxIn
TxIn
V
V
r
CC
CC
inputs are shorted to each other, or
r
r
r
2V
X
Z
X
Z
L
X
Z
X
Z
L
2V
(Note 5)
PwrDn
PwrDn
!
r
2V
X
Z
X
Z
X
X
2V
L
L
L
inputs are shorted to each other and Ground or V
ID
5
is still in the valid range (greater than 100mV) and VCM is in the valid range
Normal
Active
Active
Active
Active
Active
Active
Active
!
L/H
2V
H
H
2V
(Note 3)
(Note 4)
(Note 5)
Active
Active
H/L/Z
!
2V
X
H
P
H
2V
(Note 4)
(Note 5)
CC
Active
, or either
!
2V
H
H
H
2V
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r
inputs are shorted to
(Note 4)
(Note 4)
(Note 5)
!
H
H
2V
P
2V