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MAX2165 Datasheet(Scheda tecnica) 8 Page - Maxim Integrated Products

Numero della parte MAX2165
Dettagli  Single-Conversion DVB-H Tuner
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Produttore  MAXIM [Maxim Integrated Products]
Homepage  http://www.maxim-ic.com
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Detailed Description
Register Descriptions
The MAX2165 includes 15 programmable registers and
three read-only registers. See Table 1 for register con-
figurations. The register configuration of Table 1 shows
each bit name and the bit usage information for all reg-
isters. U labeled under each bit name indicates that the
bit value is user defined to meet specific application
requirements. A 0 or 1 indicates that the bit must be set
to the defined 0 or 1 value for proper operation.
Operation is not tested or guaranteed if these bits are
programmed to other values and is only for
factory/bench evaluation. In typical application, always
program to the operation defined state.
See Tables 2–19 for detailed descriptions of each reg-
ister. All registers must be written 100µs after power-up
and no earlier than 100µs after power-up.
Single-Conversion DVB-H Tuner
8
_______________________________________________________________________________________
Pin Description (continued)
PIN
NAME
FUNCTION
14
BBQ+
Noninverting Quadrature Baseband Output
15
BBI-
Inverting In-Phase Baseband Output
16
BBI+
Noninverting In-Phase Baseband Output
17
BB_AGC
Baseband Gain-Control Voltage Input. Accepts voltages from 0.4V to 2.3V with 2.3V providing the
maximum baseband gain.
18
VCC_VCO
VCO Power-Supply Input. Connect to a low-noise power-supply voltage. Bypass to the PCB ground
plane with a 1000pF and 100nF capacitor placed as close as possible to the pin.
19
VTUNE
VCO Tuning Voltage Input. Connect to the PLL loop filter output.
20
GND_TUNE
VCO Tuning Voltage Ground. Connect to the PCB ground plane.
21
LDO
VCO Linear-Regulator Noise Bypass. Bypass to the PCB ground plane with a 470nF capacitor placed
as close as possible to the pin.
22
CP
Charge-Pump Output. Connect to the PLL loop filter input.
23
VCC_SYN
Synthesizer Power-Supply Input. Connect to a low-noise power-supply voltage. Bypass to the PCB
ground plane with a 1000pF and 100nF capacitor placed as close as possible to the pin.
24
MUX
Multiplexed Output Line. Output for various test functions, can also be used as a PLL lock-detect
indicator. See Table 9 for more information. When used as a PLL lock detector, logic-high indicates
PLL is not locked and logic-low indicates PLL is locked.
25
REFOUT
Reference Buffer Output. Provides a buffered crystal-oscillator signal that can be used as a clock
reference for the demodulator. Requires a DC-blocking capacitor.
26
VCC_XTAL
Crystal-Oscillator Power-Supply Input. Connect to a low-noise power-supply voltage. Bypass to the
PCB ground plane with a 1000pF and 100nF capacitor placed as close as possible to the pin.
27
XB
Reference Input. Connect to a parallel resonant mode crystal through a load-matching capacitor or to
a reference oscillator.
28
XE
Reference-Oscillator Feedback Input. Connect to a capacitive feedback network when the on-chip
reference oscillator is used. Leave unconnected when an external reference is used.
EP
EP
Exposed Paddle. Solder evenly to the board’s ground plane to achieve the lowest impedance path.




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