2-22 Revision 4 Figure 2-18 Crystal Oscillator: RC Time Constant Values vs. Frequency (typical) Table 2-10 XTL" />
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鍨嬭櫉锛� U1AFS600-FG256
寤犲晢锛� Microsemi SoC
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妯�(bi膩o)婧�(zh菙n)鍖呰锛� 90
绯诲垪锛� Fusion®
RAM 浣嶇附瑷�(j矛)锛� 36864
杓稿叆/杓稿嚭鏁�(sh霉)锛� 114
闁€鏁�(sh霉)锛� 250000
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瀹夎椤炲瀷锛� 琛ㄩ潰璨艰
宸ヤ綔婧害锛� 0°C ~ 85°C
灏佽/澶栨锛� 256-LBGA
渚涙噳(y墨ng)鍟嗚ō(sh猫)鍌欏皝瑁濓細 256-FPBGA锛�17x17锛�
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Device Architecture
2-22
Revision 4
Figure 2-18 Crystal Oscillator: RC Time Constant Values vs. Frequency (typical)
Table 2-10 XTLOSC Signals Descriptions
Signal Name
Width Direction
Function
XTL_EN*
1
Enables the crystal. Active high.
XTL_MODE*
2
Settings for the crystal clock for different frequency.
Value
Modes
Frequency Range
b'00
RC network
32 KHz to 4 MHz
b'01
Low gain
32 to 200 KHz
b'10
Medium gain
0.20 to 2.0 MHz
b'11
High gain
2.0 to 20.0 MHz
SELMODE
1
IN
Selects the source of XTL_MODE and also enables the
XTL_EN. Connect from RTCXTLSEL from AB.
0
For normal operation or sleep mode, XTL_EN
depends on FPGA_EN, XTL_MODE depends on
MODE
1
For
Standby
mode,
XTL_EN
is
enabled,
XTL_MODE depends on RTC_MODE
RTC_MODE[1:0]
2
IN
Settings for the crystal clock for different frequency ranges.
XTL_MODE uses RTC_MODE when SELMODE is '1'.
MODE[1:0]
2
IN
Settings for the crystal clock for different frequency ranges.
XTL_MODE uses MODE when SELMODE is '0'. In Standby,
MODE inputs will be 0's.
FPGA_EN*
1
IN
0 when 1.5 V is not present for VCC 1 when 1.5 V is present
for VCC
XTL
1
IN
Crystal Clock source
CLKOUT
1
OUT
Crystal Clock output
Note: *Internal signal鈥攄oes not exist in macro.
0.0
1.00E-0.7
1.00E-0.6
1.00E-0.5
1.00E-0.4
1.00E-0.3
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
RC
T
ime
Constant
(sec)
Frequency (MHz)
RC Time Constant Values vs. Frequency
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