- 您現在的位置：買賣IC網 > PDF目錄68812 > 73M1903C-IM (MAXIM INTEGRATED PRODUCTS INC) SPECIALTY CONSUMER CIRCUIT, QCC32 PDF資料下載
參數資料
| 型號： | 73M1903C-IM |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, QCC32 |
| 封裝： | LEAD FREE, QFN-32 |
| 文件頁數： | 5/45頁 |
| 文件大小： | 459K |
| 代理商： | 73M1903C-IM |
第1頁第2頁第3頁第4頁當前第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁
73M1903C
Modem Analog Front End
DATA SHEET
Page: 13 of 45
2005 TERIDIAN Semiconductor Corporation
Rev 3.4
CLOCK GENERATION
Crystal Oscillator and Prescaler NCO
The crystal oscillator operates over wide choice of crystals (from 4.9MHz to 27MHz) and it is first input to
an NCO-based prescaler (divider) prior to being passed onto an on-chip PLL. The intent of the prescaler
is to convert the crystal oscillator frequency, Fxtal, to a convenient frequency to be used as a reference
frequency, Fref, for the PLL. The NCO prescaler requires a set of three numbers to be entered through
the serial port (Pseq[7:0], Prst[2:0] and Pdvsr[2:0]. The PLL also requires 3 numbers as for programming;
Ndvsr[6:0], Nseq[7:0], and Nrst[2:0]. The following is a brief description of the registers that control the
NCOs, PLLs, and sample rates for the TERIDIAN 73M1903C IC. The tables show some examples of the
register settings for different clock and sample rates. A more detailed discussion on how these values
are derived can be found in Appendix B.
Control Register (CTRL 8): Address 08h
Reset State 00h
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
Pseq7
Pseq6
Pseq5
Pseq4
Pseq3
Pseq2
Pseq1
Pseq0
This corresponds to the sequence of divisor. If Prst{2:0] =0 this register is ignored.
Control Register (CTRL 9): Address 09h
Reset State 0Ah
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
Prst2
Prst1
Prst0
Pdvsr4
Pdvsr3
Pdvsr2
Pdvsr1
Pdvsr0
Prst[2:0] represents the rate at which the sequence register is reset.
Pdvsr[4:0] represents the divisor.
Control Register (CTRL 10): Address 0Ah
Reset State 22h
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
FL
Kvco2
Kvco1
Kvco0
.Kvco2:0 represents the magnitude of Kvco associated with the VCO within PLL. This indicates the center
frequency of the VCO when the control voltage (Vc) is 1.6 Volts and the slope of the VCO freq vs. control
voltage (i.e., Kvco.). FL represents the PLL loop filter settings.
Kvco2
Kvco1
Kvco0
Fvco
Kvco
0
33 MHz
38MHz/v
0
1
36 MHz
38MHz/v
0
1
0
44 MHz
40MHz/v
0
1
48 MHz
40MHz/v
1
0
57 MHz
63MHz/v
1
0
1
61 MHz
63MHz/v
1
0
69 MHz
69MHz/v
1
73 MHz
69MHz/v
Table 3: Kvco vs. Settings at Vc=1.6V, 25°C
FL
PLLloop Filter settings
0
R1=32k,C1=100pF,C2=2.5pF
1
R1=16k, C1=100pF,C2=2.5pF
Table 4: PLL Loop Filter Settings
相關PDF資料 |
PDF描述 |
|---|---|
| 73S1209F-44IM/F | POWER SUPPLY MANAGEMENT CKT, QCC44 |
| 73S1209F-68IM/F | POWER SUPPLY MANAGEMENT CKT, QCC68 |
| 73S1209F-68IMR/F | POWER SUPPLY MANAGEMENT CKT, QCC68 |
| 73S1209F-44IMR/F | POWER SUPPLY MANAGEMENT CKT, QCC44 |
| 73S1209F-68IMR/F | POWER SUPPLY MANAGEMENT CKT, QCC68 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| 73M1903C-IM/F | 功能描述:電信線路管理 IC Modem Analog Front End RoHS:否 制造商:STMicroelectronics 產品:PHY 接口類型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray |
| 73M1903C-IM/F1 | 功能描述:電信線路管理 IC RoHS:否 制造商:STMicroelectronics 產品:PHY 接口類型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray |
| 73M1903C-IMR/F | 功能描述:電信線路管理 IC Modem Analog Front End RoHS:否 制造商:STMicroelectronics 產品:PHY 接口類型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray |
| 73M1903C-IMR/F1 | 功能描述:電信線路管理 IC RoHS:否 制造商:STMicroelectronics 產品:PHY 接口類型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray |
| 73M1903-EVM-600 | 功能描述:網絡開發工具 73M1903 w/Ppu & 600 Ohm Term-Usa & Japan RoHS:否 制造商:Rabbit Semiconductor 產品:Development Kits 類型:Ethernet to Wi-Fi Bridges 工具用于評估:RCM6600W 數據速率:20 Mbps, 40 Mbps 接口類型:802.11 b/g, Ethernet 工作電源電壓:3.3 V |
發布緊急采購，3分鐘左右您將得到回復。