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參數(shù)資料
| 型號(hào)： | AD9870 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 通信及網(wǎng)絡(luò) |
| 英文描述： | IF Digitizing Subsystem |
| 中文描述： | SPECIALTY TELECOM CIRCUIT, PQFP48 |
| 封裝： | 1.40 MM HEIGHT, PLASTIC, TQFP-48 |
| 文件頁數(shù)： | 6/20頁 |
| 文件大小： | 233K |
| 代理商： | AD9870 |
REV. 0
AD9870
–6–
Address Bit
(Hex)
Breakdown
Width
Default Value
Name
Description
CLOCK SYNTHESIZER (Continued)
0x13
(7:0)
8
0x3C
CKN(7:0)
Synthesized Frequency Divisor (8 LSBs of a 13-Bit Word).
Default Yields 300 kHz from f
CLK
= 18 MHz.
Min = 3, Max = 8191.
0x14
(6)
(5)
(4:2)
(1:0)
1
1
3
2
0
0
0
0
CKF
CKINV
CKI
CKTM
Enable Fast Acquire.
Invert Charge Pump (0 = Pump_Up
IOUTC Sources Current).
Charge Pump Current in Normal Operation. I
PUMP
= (CKI + 1)
×
0.625 mA.
Manual Control of CLK Charge Pump (0 = Off, 1 = Down, 2 = Up, 3 = Normal).
0x15
(3:0)
4
0x0
CKFA(13:8)
CK Fast Acquire Time Unit (4 MSBs of a 14-Bit Word).
0x16
(7:0)
8
0x04
CKFA(7:0)
CK Fast Acquire Time Unit (8 LSBs of a 14-Bit Word).
SSI CONTROL
0x18
(7:0)
8
0x12
SSICRA
SSI Control Register A. See Table III.
(Default is FS and CLKOUT Three-Stated.)
0x19
(1:0)
2
0x0
SSICRB
SSI Control Register B. See Table III.
0x1A
(3:0)
4
1
SSIORD
Output Rate Divisor. f
CLKOUT
= f
CLK
/SSIORD.
AAF CAPACITOR SETTING/CALIBRATION
0x1C
(7:0)
8
0x00
AAR
Antialias Response Selector. 0x60 Is Recommended.
0x1D
5
(4:0)
1
5
0
0x0
ERRN
CAPN
Error Flag.
AAF N-Well Capacitor Setting.
0x1E
5
(4:0)
1
15
0
0x0
ERRP
CAPP
Error Flag.
AAF Poly-Poly Capacitor Setting.
TEST REGISTERS AND SPI PORT READ ENABLE
0x38
(7:0)
8
0x00
TEST
Factory Test Mode.
0x39
0
1
0
TEST
Factory Test Mode.
0x3A
(7:4, 2:0)
(3)
7
1
0x0
0
TEST
SPIREN
Factory Test Mode.
Enable Read from SPI Port.
0x3B–
0x3F
(7:0)
1
0x00
TEST
Factory Test Mode.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AD9870EB | IF Digitizing Subsystem |
| AD9873 | Analog Front End Converter for Set-Top Box, Cable Modem |
| AD9873-EB | Analog Front End Converter for Set-Top Box, Cable Modem |
| AD9873JS | Analog Front End Converter for Set-Top Box, Cable Modem |
| AD9874 | IF Digitizing Subsystem |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD9870AST | 制造商:Rochester Electronics LLC 功能描述:GENERAL PURPOSE IF SUBSYSTEM - Tape and Reel 制造商:Analog Devices 功能描述: |
| AD9870EB | 制造商:AD 制造商全稱:Analog Devices 功能描述:IF Digitizing Subsystem |
| AD9873 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Analog Front End Converter for Set-Top Box, Cable Modem |
| AD9873-EB | 制造商:Analog Devices 功能描述: |
| AD9873JS | 制造商:Analog Devices 功能描述: |
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