MAX2366 MAXIM [Maxim Integrated Products], MAX2366 Datasheet - Page 14

• Manufacturer Part Number: MAX2366
• Description: Complete Dual-Band Quadrature Transmitters
• Manufacturer: MAXIM [Maxim Integrated Products]

Complete Dual-Band
Quadrature Transmitters
14
Table 3. Operation Control Register (OPCTRL)
SIDE_BAND
MOD_TYPE
BIT NAME
SHDN_BIT
RCP_MAX
ICP_MAX
IF_BAND
BUF_EN
LO_SEL
TXSTBY
MODE
______________________________________________________________________________________
STBY
VCO
IFG
POWER-UP
STATE
100
01
1
0
0
0
0
1
0
1
1
1
1
LOCATION
(0 = LSB)
12, 11
8, 7, 6
BIT
15
14
13
10
9
5
4
3
2
1
0
1 selects LOL input port; 0 selects LOH port.
1 keeps RF turbo-mode current active even when frequency acquisition is
achieved. This bit has no effect when RF_TURBO_CHARGE = 0. This mode is
used when high operating RF charge-pump current is needed.
1 keeps IF turbo-mode current active even when frequency acquisition is
achieved. This bit has no effect when IF_TURBO_CHARGE = 0. This mode is
used when high operating IF charge-pump current is needed.
Sets operating mode according to the following:
00 = FM mode
01 = Cellular digital mode; RFL is selected
10 = PCSHIGH mode; RFH1 is selected
11 = PCSLOW mode; RFH0 is selected
1 selects IFINH and IFOUTH; 0 selects IFINL and IFOUTL. For FM mode
(MODE = 00), set IF_BAND to 0.
1 selects high-band IF VCO; 0 selects low-band IF VCO.
3-bit IF gain control. Alters IF gain by approximately 2dB per LSB (0 to 14dB).
Provides a means for adjusting balance between RF and IF gain for optimized
linearity.
When this register is 1, the upper sideband is selected (LO below RF). When
this register is 0, the lower sideband is selected (LO above RF).
0 turns IFLO buffer off; 1 turns IFLO buffer on.
0 selects direct VCO modulation. (IF VCO is externally modulated and the I/Q
modulator is bypassed); 1 selects quadrature modulation.
0 shuts down everything except registers and serial interface.
0 shuts down modulator and upconverter, leaving PLLs locked and registers
active. This is the programmable equivalent to the TXGATE pin.
0 shuts down everything except serial interface, and also resets all registers to
power-up state.
FUNCTION