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ISDB-T Single-Segment Low-IF Tuners
Detailed Description
All registers must be written after power-up and no ear-
lier than 100μs after power-up.
Register Descriptions
The MAX2160/EBG include eight programmable regis-
ters and two read-only registers. The eight programma-
Table 1. Register Configuration
MSB
ble registers include a test register, a PLL register, a
VCO register, a control register, a XTAL divide register,
an R-divider register, and two N-divider registers. The
read-only registers include two status registers.
LSB
REGISTER
NUMBER
REGISTER
NAME
READ/
WRITE
REGISTER
ADDRESS
DATA BYTE
D7
D6
D5
D4
D3
D2
D1
D0
1
2
3
4
5
6
7
8
9
10
TEST
PLL
VCO
CONTROL
XTAL DIVIDE
R-DIVIDER
N-DIVIDER MSB
N-DIVIDER LSB
STATUS BYTE-1
STATUS BYTE-2
WRITE
WRITE
WRITE
WRITE
WRITE
WRITE
WRITE
WRITE
READ
READ
0x00
0x01
0x02
0x03
0x04
0x05
0x06
0x07
—
—
TUN2
CP1
VCO1
MOD
XD4
R7
N12
N4
X
VCO1
TUN1
CP0
VCO0
BBL1
XD3
R6
N11
N3
X
VCO0
TUN0
CPS
VSB2
BBL0
XD2
R5
N10
N2
X
VSB2
FLTS
EPB
VSB1
HSLS
XD1
R4
N9
N1
CP1
VSB1
MXSD
RPD
VSB0
PD2
XD0
R3
N8
N0
CP0
VSB0
D2
NPD
ADL
PD1
PWDN
R2
N7
X
PWR
ADC2
D1
TON
ADE
PD0
STBY
R1
N6
X
VASA
ADC1
D0
VAS
LTC
EPD
QOFF
R0
N5
X
VASE
ADC0
Table 2. Test Register
BIT NAME
BIT LOCATION
(0 = LSB)
RECOMMENDED
DEFAULT
FUNCTION
Set the baseband bandpass filter center frequency. This filter’s center frequency
is trimmed at the factory, but may be manually adjusted by clearing the FLTS bit
and programming the TUN[2:0] bits as follows:
000 = 0.75 x f O
001 = 0.80 x f O
TUN[2:0]
7, 6, 5
000
010 = 0.86 x f O
011 = 0.92 x f O
100 = f O (nominal center frequency of 571kHz)
101 = 1.08 x f O
110 = 1.19 x f O
111 = 1.32 x f O
Selects which registers set the baseband bandpass filter center frequency.
FLTS
4
1
1 = selects internal factory-set register
0 = selects manual trim register TUN[2:0]
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