參數(shù)資料
型號(hào): ADN2818ACPZ-RL7
廠商: Analog Devices Inc
文件頁(yè)數(shù): 7/40頁(yè)
文件大?。?/td> 0K
描述: IC CLOCK/DATA RECOVERY 32-LFCSP
標(biāo)準(zhǔn)包裝: 1,500
類型: 時(shí)鐘和數(shù)據(jù)恢復(fù)(CDR),多路復(fù)用器
PLL:
主要目的: SONET/SDH
輸入: CML
輸出: CML
電路數(shù): 1
比率 - 輸入:輸出: 1:2
差分 - 輸入:輸出: 是/是
頻率 - 最大: 2.7GHz
電源電壓: 3 V ~ 3.6 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 32-VFQFN 裸露焊盤,CSP
供應(yīng)商設(shè)備封裝: 32-LFCSP-VQ(5x5)
包裝: 帶卷 (TR)
Data Sheet
ADN2817/ADN2818
Rev. E | Page 15 of 40
Table 8. Internal Register Map1
Reg Name
R/W
Addr
D7
D6
D5
D4
D3
D2
D1
D0
FREQ0
R
0x00
MSB
LSB
FREQ1
R
0x01
MSB
LSB
FREQ2
R
0x02
0
MSB
LSB
Rate
R
0x03
COARSE_RD[8:1]
MISC
R
0x04
X
LOS status
Static
LOL
LOL status
Data rate
measurement
complete
X
COARSE_RD[0]
(LSB)
CTRLA
W
0x08
fREF range
Data rate/DIV_FREF ratio
Measure
data rate
Lock to REFCLK
CTRLA_RD
R
0x05
Readback CTRLA
CTRLB
W
0x09
Config
LOL
Reset
MISC[4]
Initiate freq
acquisition
0
Reset
MISC[2]
0
CTRLB_RD
R
0x06
Readback CTRLB
CTRLC
W
0x11
0
Config LOS
Squelch
mode
0
CTRLD
W
0x22
CDR
bypass
Disable
DATAOUT
buffer
Disable
CLKOUT
buffer
0
Initiate
PRBS
sequence
PRBS mode
CTRLE/BERCTLB2
W
0x1F
0
Enable
BERMON
BER
stdby
mode
0
PRBS/DDR enable and output mode
SEL_MODE
W
0x34
0
Limited
rate mode
0
CLK
holdover
mode
0
HI_CODE
W
0x35
HI_CODE[8:1]
LO_CODE
W
0x36
LO_CODE[8:1]
CODE_LSB
W
0x39
0
HI_CODE[0]
(LSB)
LO_CODE[0]
(LSB)
BERCTLA
W
0x1E
BER timer (NUMBITS)
0
BER start
pulse
Error count byte select, for example, 011 = Byte 3
of 5 (NUMERRORS[39:0])
BERSTS
R
0x20
X
End of BER
measurement
(EOBM)
BER_RES
R
0x21
BER_RES[7:0], one byte of pseudo BER measurement result (NUMERRORS[39:0])
BER_DAC
R
0x24
X
BER_DAC[5:0], input to BER DAC in analog BERMON mode
Phase
W
0x37
0
Phase[5:0], twos complement sample phase adjustment,
phase code range is from 30 decimal to +30 decimal,
which gives a sampling phase offset range from 0.5 UI to +0.5 UI;
for example, phase = 111010 is6 decimal,
which gives a sampling phase offset of 6/+60 = 0.1 UI
1
X = don’t care.
2
Both CTRLE and BERCTLB registers are used, depending on the application.
Table 9. Miscellaneous Register, MISC
LOS Status
Static LOL
LOL Status
Data Rate Measurement
Complete
COARSE_RD[0]
(LSB)
D7
D6
D5
D4
D3
D2
D1
D0
X
0 = no loss of signal
0 = waiting for next LOL
0 = locked
0 = measuring data rate
X
COARSE_RD[0]
1 = loss of signal
1 = static LOL until reset
1 = acquiring
1 = measurement complete
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