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參數(shù)資料
| 型號： | VES1848 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 通信及網(wǎng)絡 |
| 英文描述： | Single Chip DAVIC/DVB-RC Cable Modem(單片DAVIC/DVB-RC電纜調(diào)制解調(diào)器) |
| 中文描述： | SPECIALTY TELECOM CIRCUIT, PQFP208 |
| 封裝： | MQFP-208 |
| 文件頁數(shù)： | 12/20頁 |
| 文件大?。?/td> | 122K |
| 代理商： | VES1848 |
1999 Jul 01
12
Philips Semiconductors
Product specification
Single Chip DAVIC/DVB-RC Cable Modem
VES1848
SYMBOL
Qconti[2:0]
PIN NUMBER
95,96,97
TYPE
I
DESCRIPTION
Q input for the US modulator in continuous mode (parameter
contiMode=1 (AF.3), and contiMem=0 (AF.6)). This data bus is
clocked on the rising edge of Fconti clock.
On/off command for the US amplifier. It can be active high or low
depending on parameter Pampli (AE.6). It is activated just before
the start of a burst and desactivated just after the end of the burst.
PWM encoded output signal to control the US amplifier power level.
The encoded data is the parameter PwAmpli (95.[7-0]). This signal
is typically fed to the US amplifier through a single RC
.
When parameter BB_IF=0 (AD.2) : I base band digital output.
When parameter BB_IF=1 (AD.2) : modulated IF digital output.
I_IF[9] is the MSB. I_IF is in offset binary.
When parameter BB_IF=0 (AD.2) : Q base band digital output.
When parameter BB_IF=1 (AD.2) : programmable sinewave
(B0.[7-0], B1.[7-0]) digital output.
Q[9] is the MSB. Q is in offset binary.
US Sampling ClocK for the external DACs connected to I_IF and Q.
OnOff
170
O
(5V)
PctrPWM
171
O
(5V)
I_IF[9:0]
137,138,141,142
143,144,147,148
149,150
122,123,124,125
128,129,130,131
134,135
O
(3.3V)
Q[9:0]
O
(3.3V)
US_SACLK
136
O
(3.3V)
O
(5V)
CTRL[3:0]
101,102,103,104
Control pins. Their values are programmable through regCtrl[5:2]
(FE.[5-2]). RegCtrl[5] controls CTRL[3] (pin 101).
CTRL are open drain outputs and therefore require external pull up
resistors to VCC.
3ms markers received DS either IB or OOB. Mainly used for test.
Active high pulse that is one US_clk period long.
Start of US slot as defined in the DVB/DAVIC spec. Mainly used for
test.
Active high pulse that is one US_clk period long.
For normal operation of the VES 1848, SCAN_EN must be
grounded.
For normal operation of the VES 1848, Tmode must be grounded.
For normal operation of the VES 1848, IDDQ must be grounded.
For normal operation of the VES 1848, TEST must be grounded.
The VES1848 is only a switch between SCLin and SCLout. It is
used to isolate the OOB tuner (programmed by I2C) from the I2C
bus. When regCtrl[0]=0 (FE.0) SCLout is isolated from SCLin.
The VES1848 is only a switch between SCLin and SCLout. It is
used to isolate the OOB tuner (programmed by I2C) from the I2C
bus. When regCtrl[0]=0 (FE.0) SCLout is isolated from SCLin.
The VES1848 is only a switch between SDAin and SDAout. It is
used to isolate the OOB tuner (programmed by I2C) from the I2C
bus. When regCtrl[0]=0 (FE.0) SDAout is isolated from SDAin. SDA
is a bidirectional signal. When regCtrl[1]=0 (FE.1) SDAin is an input
else it is an output.
The VES1848 is only a switch between SDAin and SDAout. It is
used to isolate the OOB tuner (programmed by I2C) from the I2C
bus. When regCtrl[0]=0 (FE.0) SDAout is isolated from SDAin. SDA
is a bidirectional signal. When regCtrl[1]=1 (FE.1) SDAout is an
input else it is an output.
DS_3ms
168
O
(5V)
O
(5V)
start_slot_us
169
SCAN_EN
51
I
Tmode
IDDQ
TEST
SCLin
52
53
76
179
I
I
I
I
SCLout
178
O
(5V)
SDAin
177
I/O
(5V)
SDAout
176
I/O
(5V)
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| VES1993 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:SINGLE CHIP SATELLITE CHANNEL RECEIVER |
| VES-220M0JTR-0405 | 功能描述:鋁質(zhì)電解電容器-SMD 6.3 Volts 22uF 20% 4x5.3 RoHS:否 制造商:Vishay/BC Components 電容:2200 uF 容差:20 % 電壓額定值:16 V ESR: 工作溫度范圍:- 55 C to + 150 C 尺寸:16 mm W x 16 mm L x 21 mm H 產(chǎn)品:High Temp Electrolytic Capacitors |
| VES-220M1ATR-0505 | 功能描述:鋁質(zhì)電解電容器-SMD 10 Volts 22uF 20% 5x5.3 RoHS:否 制造商:Vishay/BC Components 電容:2200 uF 容差:20 % 電壓額定值:16 V ESR: 工作溫度范圍:- 55 C to + 150 C 尺寸:16 mm W x 16 mm L x 21 mm H 產(chǎn)品:High Temp Electrolytic Capacitors |
| VES-220M1CTR-0505 | 功能描述:鋁質(zhì)電解電容器-SMD 16 Volts 22uF 20% 5x5.3 RoHS:否 制造商:Vishay/BC Components 電容:2200 uF 容差:20 % 電壓額定值:16 V ESR: 工作溫度范圍:- 55 C to + 150 C 尺寸:16 mm W x 16 mm L x 21 mm H 產(chǎn)品:High Temp Electrolytic Capacitors |
| VES-220M1ETR-0605 | 功能描述:鋁質(zhì)電解電容器-SMD 25 Volts 22uF 20% 6.3x5.3 RoHS:否 制造商:Vishay/BC Components 電容:2200 uF 容差:20 % 電壓額定值:16 V ESR: 工作溫度范圍:- 55 C to + 150 C 尺寸:16 mm W x 16 mm L x 21 mm H 產(chǎn)品:High Temp Electrolytic Capacitors |
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