MAX3540 データシートの表示（PDF） - Maxim Integrated
部品番号
コンポーネント説明
メーカー
MAX3540 Datasheet PDF : 19 Pages
| |||
Complete Single-Conversion Television Tuner
Detailed Description
Register Descriptions
The MAX3540 includes 11 programmable registers and
two read-only registers. The 11 programmable registers
include two N-divider registers, an R-divider register, a
VCO register, an RSSI/charge-pump/filter-select regis-
ter, a control register, a shutdown register, and tracking-
filter control registers. These 11 programmable regis-
ters are also readable. The read-only registers include
a status register and a ROM table data register.
Recommended default bit settings are provided for
user convenience only and are not guaranteed. The
user must write all registers after power-up and no ear-
lier than 100μs after power-up.
Table 1. Register Configuration
REGISTER READ/ REGISTER
NAME WRITE ADDRESS
N-DIV High
N-DIV Low
R-DIV
VCO
Both
Both
Both
Both
0x00
0x01
0x02
0x03
MSB
D7
0
N7
0
VCO4
D6
N14
N6
R6
VCO3
D5
N13
N5
R5
VCO2
DATA BYTE
D4
D3
N12
N11
N4
N3
R4
R3
VCO1
VCO0
LSB
D2
D1 D0
N10
N9 N8
N2
N1 N0
R2
R1 R0
LD
VDIV1 VDIV0
IFOVLD,
Charge
Pump, and
Filter Select
Both
0x04
0
IFOVLD2 IFOVLD1 IFOVLD0
CP1
CP0
TF1 TF0
Control
Shutdown
Tracking
Filter Series
Cap
Both
Both
Both
0x05
0x06
0
0
0
0
SHDN_RF SHDN_IFAGC INPT1 INPT0
SHDN_MIX1 SHDN_MIX0 SHDN_IF SHDN_PD SHDN_SYN
0
0
0
0x07
TFS7
TFS6
TFS5
TFS4
TFS3
TFS2
TFS1 TFS0
Tracking
Filter
Both
0x08
FLD
Parallel Cap
0
TFP5
TFP4
TFP3
TFP2
TFP1 TFP0
Tracking
Filter ROM Both
0x09
0
Address
Reserved Both
0x0A
X
0
0
0
TFA3
TFA2
TFA1 TFA0
X
X
X
X
X
X
X
ROM Table
Data
Readback
Status
Read
Read
0x0B
0x0C
TFR7
POR
TFR6
LD2
TFR5
LD1
TFR4
LD0
TFR3
X
TFR2
X
TFR1 TFR0
X
X
Table 2. N-DIV High Register (Address: 0000b)
BIT NAME
BIT LOCATION (0 = LSB)
RECOMMENDED
DEFAULT
FUNCTION
RESERVED
7
0
Must be set to 0.
N[14:8]
6–0
001 0010
Sets the most significant bits of the PLL integer divider (N). Default
integer divider value is N = 4688. N can range from 256 to 32,767.
_______________________________________________________________________________________ 9
Share Link: 