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PDF BS2F7V7395 Data sheet ( Hoja de datos )
| Número de pieza | BS2F7V7395 | |
| Descripción | Digital DBS Tuner | |
| Fabricantes | Sharp | |
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MODEL No.
BS2F7VZ7395
SPEC No.
EC-06Y04C
PAGE
5/19
5-8
5-9
5-10
5-11
PLL reference leak
RF output VSWR
RF output gain
Current
B2
consumption B3
B4
VDD
-40 -30 dBc 500kHz
2.0 2.5
950M to 2150MHz
-5 0 +5 dB measured at RF out
90 135 mA B2=3.3V
34 112 mA B3=3.3V
25
40 mA
B4=3.3V
61 180 mA VDD=2.5V
[6] PLL FUNCTION DESCRIPTION
PLL and VCO are promptly set up without fail when the user correctly program the data with the
prompt I2C access sequence as long as the following are also applied;
a) Follow the I2C standard specification
b) Leave RTS to 0
6-1. I2C-BUS DATA FORMATS
Table 1; Write data format (MSB is transmitted first)
MSB
LSB
1 1 0 0 0 0(MA1) 0(MA0) 0 A Byte1
0
BG1
BG0
N8
N7
N6
N5
N4 A Byte2
N3 N2 N1 A5 A4
A3
A2
A1 A Byte3
1
1(C1) 1(C0)
PD5
PD4
TM
0(RTS) 1(REF) A Byte4
BA2
BA1
BA0
PSC
PD3 PD2/TS2 DIV/TS1 PD0/TS0 A
Byte5
*A
* N8 to N1
* A5 to A1
* REF
* PSC
* MA1, MA0
* PD0
* BA2, BA1, BA0
* DIV
* PD5 to PD2
* RTS
* TS2, TS1, TS0
* C1, C0
* BG1, BG0
* TM
; Acknowledge bit
; Programmable division ratio control bits
; Swallow division ratio setting bits
; Reference division ratio setting bits
http://www.DataSheet4U.net/
; Prescaler division ratio setting bits
; Address setting bits
; PO control bit
; Local oscillator select
; Local oscillator divided ratio setting
; BB LPF cut-off frequency setting
; Test mode control bit
; Test mode setting bits (when RTS = '1')
; Charge pump current setting bits
; BB AMP gain setting bits
; VCO/LPF adjustment mode setting bits
(see Table 3)
(see Table 4)
(see Table 5)
(see Table 6)
(see Table 7)
(see Table 8)
(see Table 9)
(see Table 9)
(see Table 10)
(see Table 11)
(see Table 11)
(see Table 12)
(see Table 13)
(see section [8] )
Write PLL register data to set one among the following I2C access sequence as #a) to h).
It is available to skip the bytes which does not require for renewal or change the sequence of the bytes
to choose one of the following.
I2C start->1st byte->2nd byte->3rd byte->4th byte->5th byte
a) I2C start -> byte1 -> byte2 -> byte3 -> byte4 -> byte5 *
byte1: I2C address byte
b) I2C start -> byte1 -> byte4 -> byte5 -> byte2 -> byte3 *
c) I2C start -> byte1 -> byte2 -> byte3 -> byte4 -> either I2C stop or (another) start
d) I2C start -> byte1 -> byte4 -> byte5 -> byte2 -> either I2C stop or (another) start
e) I2C start -> byte1 -> byte2 -> byte3 -> either I2C stop or (another) start
f) I2C start -> byte1 -> byte4 -> byte5 -> either I2C stop or (another) start
g) I2C start -> byte1 -> byte2 -> either I2C stop or (another) start
h) I2C start -> byte1 -> byte4 -> either I2C stop or (another) start
*: Either I2C stop or (another) start is available to follow after the 5th byte, but not mandatory
(Caution): During receiving signals, don’t access I2C bus to satisfy the phase noise character specification.
SHARP PROPRIETARY
datasheet pdf - http://www.DataSheet4U.net/
5 Page 
[8]TUNER CONTROL PROCEDURE
8-1 FLOW CHART
MODEL No.
BS2F7VZ7395
SPEC No.
EC-06Y04C
PAGE
11/19
Set tuner
Adjust timing loop parameters
Launch coarse
Tuner control sequence
(*1)
Launch coarse
AUTOCENTRE[address:F8,bit2]=0
FINE[address:F8,bit1]=0
COARSE[address:F8,bit0]=1
Nothing found
Wait timeout (max. 15 ms)
Adjust timing loop parameters
Adjust carrier loop parameters
Adjust fine parameters
Launch fine scan
http://www.DataSheet4U.net/
Nothing found
NG
Wait lock indicator status
Channel OK
OK
Check min symbolrate value
Check min/max derotator offset criteria
Check shannon criteria
Launch fine scan
FINE[address:F8,bit1]=1
Check LK bit
[address:24,bit3]
*1 Tuning details is shown in the next section.
SHARP PROPRIETARY
datasheet pdf - http://www.DataSheet4U.net/
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