BS2F7VZ7395
BS2F7VZ7395
PAGE
BS2F7VZ7395 EC-06Y04C 3/19
[DESCRIPTION] This specification covers DBS tuner intended for use in Digital Broadcasting
Satellites. This tuner incorporates "LINK" section that is composed of DVB standard QPSK
demodulation circuit and FEC (Forward Error Correction) circuit. This tuner has 8-bit
transport stream output.
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MODEL No. SPEC No. PAGE
BS2F7VZ7395 EC-06Y04C 4/19
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MODEL No. SPEC No. PAGE
BS2F7VZ7395 EC-06Y04C 5/19
*A ; Acknowledge bit
* N8 to N1 ; Programmable division ratio control bits (see Table 3)
* A5 to A1 ; Swallow division ratio setting bits (see Table 4)
* REF ; Reference division ratio setting bits (see Table 5)
* PSC ; Prescaler division ratio setting bits (see Table 6)
* MA1, MA0 ; Address setting bits (see Table 7)
* PD0 ; PO control bit (see Table 8)
* BA2, BA1, BA0 ; Local oscillator select (see Table 9)
* DIV ; Local oscillator divided ratio setting (see Table 9)
* PD5 to PD2 ; BB LPF cut-off frequency setting (see Table 10)
* RTS ; Test mode control bit (see Table 11)
* TS2, TS1, TS0 ; Test mode setting bits (when RTS = '1') (see Table 11)
* C1, C0 ; Charge pump current setting bits (see Table 12)
* BG1, BG0 ; BB AMP gain setting bits (see Table 13)
* TM ; VCO/LPF adjustment mode setting bits (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.
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MODEL No. SPEC No. PAGE
BS2F7VZ7395 EC-06Y04C 6/19
6-2. PROGRAMING
6-2-1 Programmable divider bits data
Please set P, N, A, R as follows.
fvco=[(P*N)+A]*fosc/R
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BS2F7VZ7395 EC-06Y04C 7/19
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BS2F7VZ7395 EC-06Y04C 8/19
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BS2F7VZ7395 EC-06Y04C 9/19
Table 13; Baseband AMP gain control (Depend on PLL register setting)
BG1 BG0 ATTENUATION (Typ.)
0 0/1 0
1 0 –2 dB
1 1 –4 dB
△
1
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MODEL No. SPEC No. PAGE
BS2F7VZ7395 EC-06Y04C 10/19
address data [H] data [H] address data [H] data [H] address data [H] data [H]
[H] 27.5Msps 5Msps [H] 27.5Msps 5Msps [H] 27.5Msps 5Msps
00 n/a n/a 30 00 00 64 n/a n/a
01 15 15 31 1E 1E 65 n/a n/a
02 20 20 32 14 14 66 n/a n/a
03 8E 8E 33 0F 0F 67 n/a n/a
04 8E 8E 34 09 09 68 n/a n/a
05 12 12 35 0C 0C 69 n/a n/a
06 00 00 36 05 05 6A n/a n/a
07 n/a n/a 37 2F 2F 6B n/a n/a
08 n/a n/a 38 16 16 6C n/a n/a
09 00 00 39 BD BD 70 00 00
0A 04 04 3A 00 00 71 00 00
0B 00 00 3B 13 13 72 00 00
0C 00 00 3C 11 11 74 00 00
0D 00 00 3D 30 30 75 00 00
0E C4 C4 3E n/a n/a 76 00 00
0F 54 54 3F n/a n/a 81 00 00
10 n/a n/a 40 63 63 82 3F 3F
11 7A 7A 41 04 04 83 3F 3F
12 03 03 42 60 60 84 00 00
13 48 48 43 00 00 85 00 00
14 84 84 44 00 00 88 00 00
15 45 45 45 00 00 89 00 00
16 B7 B7 46 00 00 8A 00 00
17 9C 9C 47 00 00 8B 00 00
18 00 00 4A 00 00 8C 00 00
19 A6 A6 4B n/a n/a 90 00 00
1A 88 88 4C n/a n/a 91 00 00
1B 8F 8F 50 10 10 92 00 00
1C F0 F0 51 38 38 93 00 00
1E n/a n/a 52 21 21 94 1C 1C
1F n/a n/a 53 A2 86 97 00 00
20 0B 0B 54 D9 56 A0 48 48
21 54 54 55 23 06 A1 00 00
22 00 00 56 8D 76 B0 B8 B8
23 00 00 57 1B 05 B1 3A 3A
24 n/a n/a 58 54 54 B2 10 10
25 n/a n/a 59 86 86 B3 82 82
26 n/a n/a 5A 00 00 B4 80 80
27 n/a n/a 5B 9B 9B B5 82 82
28 46 0C 5C 08 08 B6 82 82
29 65 CC 5D 7F 7F B7 82 82
2A E0 B0 5E 00 00 B8 20 20
2B FF FF 5F FF FF B9 00 00
2C F7 F7 60 n/a n/a F0 00 00
2D n/a n/a 61 n/a n/a F1 00 00
2E n/a n/a 62 n/a n/a F2 C0 C0
2F n/a n/a 63 n/a n/a
<note>
(1) The data field with “ n/a “ stands for “read only register”. No need to write, no malady with writing.
(2) Some register bit should be swiched “1” and “0”, duaring the signal search.
Ex) I2C bus repeater [address:01/bit7] : OFF=0/ON=1
(3) symbol_frequency : SFRH,M,L[address:28,29,2A] = symbol_frequency / FM_CLK [100MHz] x 220
(4) FM_CLK : fpll = fxtal x (PLL_DIV)/4 when PLL_SELRATIO = 1
fpll = fxtal x (PLL_DIV)/6 when PLL_SELRATIO = 0
( # fxtal = 4MHz , PLL_SELRATIO[address:41,bit2] )
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MODEL No. SPEC No. PAGE
BS2F7VZ7395 EC-06Y04C 11/19
Launch coarse
AUTOCENTRE[address:F8,bit2]=0
Adjust timing loop parameters FINE[address:F8,bit1]=0
Launch coarse COARSE[address:F8,bit0]=1
Check LK bit
Nothing found
Wait lock indicator status [address:24,bit3]
Channel OK
NG OK
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BS2F7VZ7395 EC-06Y04C 12/19
8-2 VCO and LPF ADJUSTMENT MODE SETTING SEQUENCE AFTER POWER ON and AT EVERY TUNING △ 2
START
2
I C Start
Byte1
Set the MA1, MA0 bits
(Slave address setting) Wait for 10msec
Byte2 Hardware adjustment
Set MSB header bit to '0' mode running
(Byte2 header bit data) 2
I C Start
Set BG1, BG0 bit
Byte1
(BB AMP gain setting)
Set the N8-N4 bits Set the MA1, MA0 bits
(Programmable division ratio control) (Slave address setting)
Byte3 Byte4
Set the N3-N1 bits Set MSB header bit to '1'
(Programmable division ratio control) (Byte4 header bit data)
Set the A5-A1 bits Set the PD5 and PD4 bits
(Swallow division ratio setting) (BB LPF cut-off frequency setting)
Leave the TM bit to '1'
Byte4
(VCO/LPF adjustment mode setting)
Set MSB header bit to '1' Leave the latest data
(Byte4 header bit data) (C1, C0, RTS, REF)
Set the PD5 and PD4 bits to '0'
Byte5
(BB LPF cut-off frequency setting)
Set the TM bit to '0' Set the PD3 and PD2 bits
(VCO/LPF adjustment mode clear) (BB LPF cut-off frequency setting)
Leave the latest data Leave the latest data
(C1, C0, RTS, REF) (BA2-BA0, PSC, DIV, PD0)
Byte5 2
I C Stop
Set the BA2-BA0 bits
(Local oscillator select) END
Set the PD3 and PD2 bits to '0'
(BB LPF cut-off frequency setting)
Set the DIV bit
(Local oscillator divided ratio setting)
Leave the latest data
(PSC, PD0)
2
(I C Stop)
2
I C Start
Byte1
Set the MA1, MA0 bits
(Slave address setting)
Byte4
Set MSB header bit to '1'
(Byte4 header bit data)
Set the TM bit to '1'
(VCO/LPF adjustment mode setting)
Leave the latest data
(C1, C0, PD5, PD4, RTS, REF)
2
I C Stop
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BS2F7VZ7395 EC-06Y04C 13/19
[9] Reliability
9-1. High temperature high humidity load (40deg.C, 90% RH, 500h)
1) After leaving DUT at room temperature and humidity for 24h or longer, measure the initial
value.
2) After cycling DUT in the constant chamber at 40deg.C/90-95% RH in on state, for total 500h,
leave the DUT at room temperature and humidity for 2h and then measure value after test.
3) Must meet the specifications of Table 19.
4) The contact resistance of F-connector must be less than 0.02 ohm. (*)
9-5. Vibration (10-55 Hz, 1.5 mm, in each of three mutually perpendicular directions, each 2 times)
1) After leaving DUT at room temperature and humidity for 24h or longer, measure the initial
values.
2) Using the vibration tester, apply motion having an amplitude of 1.5 mm (constant), the
frequency being varied uniformly between 10 and 55 Hz, to DUT, for 2h in each of three
mutually perpendicular directions (X, Y and Z, total of 6h). After the test, measure the values.
3) Must meet the specifications of Table 19.
4) This test is to be conducted using a single tuner.
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MODEL No. SPEC No. PAGE
BS2F7VZ7395 EC-06Y04C 14/19
Table 19
item specification condition
Eb/No (initial values)+/-1dB BER = 2e-4 at viterbi output
PC=3/4
・F-connector is made from iron. If the plating is peeled off, rust might occur to surface of F-connector.
But it makes no influence of electric specifications, under contact resistance is less than 0.02 ohm.
・The cutting plane of chassis and shield cover is not plated, therefore rust might occur.
But it makes no influence of electric specifications.
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IX2505VA
SDA
AGC 90deg
CONTROL SCL
SHIFTER
(DIVIDER)
VCO
・・・
MODEL No.
SCL
PLL
I2C
BS2F7VZ7395
SDA
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BS2F7VZ7395 EC-06Y04C 16/19
RF IN
DISEQC_OUT
NRESET
RF OUT
DATA_0
DATA_1
DATA_2
DATA_3
DATA_4
DATA_5
DATA_6
DATA_7
SYNC
VDD
ERR
SDA
CLK
SCL
B1B
B1A
D/P
NC
NC
NC
NC
B4
B2
B3
B
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
1
2
3
4
5
6
7
8
9
1nF
1nF
2.2k
reset
100
100
3.3V
3.3V
2.5V
- +
470uF
470uF
470uF
+
56
-
-
PARALLEL DATA
SCL
SDA
TRANSPORT STREAM
PIN LIST
PIN NAME PIN No. PIN DESCRIPTION
B1B 1 Voltage supply of LNB B. Please ground it with a 1000pF ceramic
capacitor.
B1A 2 Voltage supply of LNB A. Please ground it with a 1000pF ceramic
capacitor.
B4 3 3.3V supply for RF Booster Amp of tuner.
B2 4 3.3V supply for the RF section. Please keep a ripple at the Power
Supply less than 10mVp-p.
NC 5,6,7,10 It is not connected inside the unit. We advice to ground it.
SDA 8 I2C bus. Please connect a pull-up resistor which is more than 2k
SCL 9 ohm outside of the tuner.
B3 11 3.3V supply for STV0288
DISEQC_OUT 12 Pulse output for LNB
VDD 13 2.5V supply for STV0288
DATA[7:0] 14,...,21 Transport stream (TS) parallel data
CLK 22 Transport stream byte clock.
D/P 23 Transport stream data valid signal
SYNC 24 Transport stream sync bit
ERR 25 Transport stream packet error signal
NRESET 26 Reset signal input active low
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BS2F7VZ7395 EC-06Y04C 17/19
・・・・・
・・・・・
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BS2F7VZ7395 EC-06Y04C 18/19
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BS2F7VZ7395 EC-06Y04C 19/19
Packaging details
antistatic_sheet x1
180
434 470
<Reference drawing>
UNIT :mm
QUANTITY :200pcs
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