MAX2769
Universal GPS Receiver
Table 7. Configuration 2 (Address: 0001)
DATA BIT
IQEN
GAINREF
LOCATION
27
26:15
14:13
DEFAULT
VALUE
0
170d
00
DESCRIPTION
I and Q channels enable. Set 1 to enable both I and Q channels and 0 to enable I
channel only.
AGC gain reference value expressed by the number of MSB counts (magnitude bit
density).
Reserved.
AGC mode control. Set D12:D11 = 00: independent I and Q; 01: I and Q gains are
AGCMODE
12:11
00
locked to each other; 10: gain is set directly from the serial interface by GAININ;
11: disallowed state.
18
FORMAT
BITS
DRVCFG
LOEN
RESERVED
DIEID
10:9
8:6
5:4
3
2
1:0
01
010
00
1
0
00
Output data format. Set D10:D9 = 00: unsigned binary; 01: sign and magnitude; 1X:
two’s complement binary.
Number of bits in the ADC. Set D8:D6 = 000: 1 bit, 001: 1.5 bits; 010: 2 bits;
011: 2.5 bits, 100: 3 bits.
Output driver configuration. Set D5:D4 = 00: CMOS logic, 01: limited differential logic; 1X:
analog outputs.
LO buffer enable. Set 1 to enable LO buffer or 0 to disable the buffer.
Reserved.
Identifies a version of the IC.
Maxim Integrated
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