參數(shù)資料
型號(hào)： SI5013-EVB
廠商： Silicon Laboratories Inc
文件頁(yè)數(shù)： 14/26頁(yè)
文件大?。?/td> 0K
描述： BOARD EVALUATION FOR SI5013
標(biāo)準(zhǔn)包裝： 1
主要目的： 計(jì)時(shí)，時(shí)鐘和數(shù)據(jù)恢復(fù)（CDR）
已用 IC / 零件： SI5013
已供物品： 板
其它名稱： 336-1123
Si5013
Rev. 1.6
21
16
17
DOUT–
DOUT+
OCML
Differential Data Output.
The data output signal is a retimed version of the
data recovered from the signal present on DIN.
19
RESET/CAL
I
LVTTL
Reset/Calibrate.
Driving this input high for at least 1
μs will reset
internal device circuitry. A high to low transition on
this pin will force a DSPLL calibration. For normal
operation, drive this pin low.
Note: This input has a weak internal pulldown.
20
REXT
External Bias Resistor.
This resistor is used to establish internal bias cur-
rents within the device. This pin must be connected
to GND through a 10 k
Ω (1%) resistor.
22
23
CLKOUT–
CLKOUT+
OCML
Differential Clock Output.
The output clock is recovered from the data signal
present on DIN except when LTR is asserted or the
LOL state has been entered.
24
CLKDSBL
I
LVTTL
Clock Disable.
When this input is high, the CLKOUT output drivers
are disabled. For normal operation, this pin should
be low.
Note: This input has a weak internal pulldown.
26
BER_LVL
I
Bit Error Rate Level Control.
The BER threshold level is set by applying a volt-
age to this pin. When the BER exceeds the pro-
grammed threshold, BER_ALM is driven low. If this
pin is tied to GND, BER_ALM is disabled. There is
no hysteresis.
27
BER_ALM
OLVTTL
Bit Error Rate Alarm.
This pin will be driven low to indicate that the BER
threshold set by BER_LVL has been exceeded. The
alarm will clear after the BER rate has improved by
approximately a factor of 2.
28
NC
No Connect.
Leave this pin disconnected.
GND Pad, 2
GND
Supply Ground.
Nominally 0.0 V. The GND pad found on the bottom
of the 28-lead QFN (see Figure 16 on page 23)
must be connected directly to supply ground. Min-
imize the ground path inductance for optimal perfor-
mance.
Table 8. Si5013 Pin Descriptions (Continued)
Pin #
Pin Name
I/O
Signal Level
Description
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