- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄24814 > 935264535557 (NXP SEMICONDUCTORS) SPECIALTY TELECOM CIRCUIT, PQFP208 PDF資料下載
參數(shù)資料
| 型號： | 935264535557 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 通信及網(wǎng)絡(luò) |
| 英文描述： | SPECIALTY TELECOM CIRCUIT, PQFP208 |
| 封裝： | SOT-316, MQFP-208 |
| 文件頁數(shù)： | 4/23頁 |
| 文件大?。?/td> | 194K |
| 代理商： | 935264535557 |
1999 Jul 01
12
Philips Semiconductors
Product specication
Single Chip DAVIC/DVB-RC Cable Modem
VES1848
SYMBOL
PIN NUMBER
TYPE
DESCRIPTION
Qconti[2:0]
95,96,97
I
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.
OnOff
170
O
(5V)
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.
PctrPWM
171
O
(5V)
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.
I_IF[9:0]
137,138,141,142
143,144,147,148
149,150
O
(3.3V)
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.
Q[9:0]
122,123,124,125
128,129,130,131
134,135
O
(3.3V)
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_SACLK
136
O
(3.3V)
US Sampling ClocK for the external DACs connected to I_IF and Q.
CTRL[3:0]
101,102,103,104
O
(5V)
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.
DS_3ms
168
O
(5V)
3ms markers received DS either IB or OOB. Mainly used for test.
Active high pulse that is one US_clk period long.
start_slot_us
169
O
(5V)
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.
SCAN_EN
51
I
For normal operation of the VES 1848, SCAN_EN must be
grounded.
Tmode
52
I
For normal operation of the VES 1848, Tmode must be grounded.
IDDQ
53
I
For normal operation of the VES 1848, IDDQ must be grounded.
TEST
76
I
For normal operation of the VES 1848, TEST must be grounded.
SCLin
179
I
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.
SCLout
178
O
(5V)
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.
SDAin
177
I/O
(5V)
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.
SDAout
176
I/O
(5V)
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.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 08-3518-10 | 8 PIN SOLDER TAIL DIP SOCKET |
| 06-3518-11 | DIP16, IC SOCKET |
| 08-3518-10TL | DIP18, IC SOCKET |
| 06-3518-10 | DIP16, IC SOCKET |
| 06-3518-10E | DIP16, IC SOCKET |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 935267356112 | 制造商:NXP Semiconductors 功能描述:IC TEA1507PN |
| 935268081112 | 制造商:NXP Semiconductors 功能描述:SUB ONLY IC |
| 935268721125 | 制造商:NXP Semiconductors 功能描述:Buffer/Line Driver 1-CH Non-Inverting 3-ST CMOS 5-Pin TSSOP T/R |
| 935269304128 | 制造商:ST-Ericsson 功能描述:IC AUDIO CODEC W/TCH SCRN 48LQFP |
| 935269544557 | 制造商:NXP Semiconductors 功能描述:SUB ONLY TDA9587-2US1-V1.3 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。