DS92LV2411_15 Datasheet, PDF (30/54 Pages) Texas Instruments – 5 to 50 MHz 24-Bit Channel Link II Serializer And Deserializer

DS92LV2411, DS92LV2412
SNLS302E – MAY 2010 – REVISED FEBRUARY 2015
www.ti.com
OSC_SEL2
L
L
L
L
H
H
H
H
Table 8. OSC_SEL (Oscillator) Configuration
OSC_SEL[2:0] INPUTS
OSC_SEL1
L
L
H
H
L
L
H
H
OSC_SEL0
L
H
L
H
L
H
L
H
CLKOUT OSCILLATOR FREQUENCY
Off – Feature Disabled – Default
50 MHz ±40%
25 MHz ±40%
16.7 MHz ±40%
12.5 MHz ±40%
10 MHz ±40%
8.3 MHz ±40%
6.3 MHz ±40%
PDB
(DES)
RIN
(Diff.)
active serial stream
X
LOCK ^Z
DO[23:0], _Z
CO1,CO2,CO3
CLKOUT* _Z
(DES)
PASS
Z
L
L
L
f
L
H
L
L
f
H
L
H
Z
Z
Z
H
Z
OFF
Locking
Active
C0 or C1 Error
In Bit Stream
(Loss of LOCK)
CONDITIONS: * RFB = L, OSS_SEL = H , and OSC_SEL not equal to 000.
Active
OFF
Figure 25. Des Outputs With Output State High And Clk Output Oscillator Option Enabled
8.3.2.6 Des — OP_LOW — Optional
The OP_LOW feature is used to hold the LVCMOS outputs, except for the LOCK output, at a LOW state. When
the OP_LOW feature is enabled, the LVCMOS outputs will be held at logic LOW while LOCK = LOW. The user
must toggle the OP_LOW Set/Reset register bit to release the outputs to the normal toggling state. Note that the
release of the outputs can only occur when LOCK is HIGH. The OP_LOW strap option is assigned to the PASS
Pin, at Pin location 42.
Restrictions on other straps:
1. Other strap options should not be used in order to keep the data and clock outputs at a true logic LOW state.
Other features should be selected through the I2C register interface.
2. The OSS_SEL feature is not available when OP_LOW is enabled.
Outputs DO[23:0], CO[3:1] and CLKOUT are in TRI-STATE before PDB toggles HIGH because the OP-LOW
strap value has not been recognized until the DS92LV2412 powers up. Figure 26 shows the user controlled
release of the OP_LOW and automatic reset of OP_LOW set on the falling edge of LOCK. Figure 27 shows the
user controlled release of OP_LOW and manual reset of OP_LOW set. Note manual reset of OP_LOW can only
occur when LOCK is HIGH.
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