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| 型號： | SN761678BDBT |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | TV TUNER IC |
| 中文描述： | 電視調(diào)諧器集成電路 |
| 文件頁數(shù)： | 10/20頁 |
| 文件大?。?/td> | 321K |
| 代理商： | SN761678BDBT |
www.ti.com
FUNCTIONAL DESCRIPTION
I
2
C Bus Mode
I
2
C Write Mode (R/W = 0)
SN761678B
TV TUNER IC
SLES185–JUNE 2006
Table 1. Write Data Format
MSB
1
0
N7
1
X
LSB
R/W = 0
N8
N0
OS
BS1
Address byte (ADB)
Divider byte 1 (DB1)
Divider byte 2 (DB2)
Control byte (CB)
Band-switch byte (BB)
1
0
0
0
MA1
N10
N2
RSA
BS3
MA0
N9
N1
RSB
BS2
A
(1)
A
(1)
A
(1)
A
(1)
A
(1)
N14
N6
CP
X
N13
N5
T2
X
N12
N4
T1
X
N11
N3
T0
BS4
(1)
A = Acknowledge
Table 2. Write Data Symbol Description
SYMBOL
MA[1:0]
DESCRIPTION
DEFAULT
Address-set bits (see
Table 3
)
Programmable counter set bits
N = N14
×
2
14
+ N13
×
2
13
+ ... + N1
×
2 + N0
Oscillation frequency = f
×
8
×
N
f
r
= Reference frequency = 4 MHz/Reference divider
Charge-pump current-set bit
60
μ
A (CP = 0), 280
μ
A (CP = 1)
Test bits (see
Table 4
)
Normal mode: T2 = 0, T1 = 0, T0 = 1/0
Reference divider ratio selection bits (see
Table 5
)
Tuning amplifier control bit
Tuning voltage on (OS = 0)
Tuning voltage off, high impedance (OS = 1)
Band-switch control bits
BSn = 0: Tr = OFF
Band selection by BS1, BS2, BS4
BS1(VL)
BS2(VH)
BS4(U)
1
0
0
X
1
0
X
X
1
Don't care
N[14:0]
N14 = N13 = N12 = ... = N0 = 0
CP
CP = 1
T[2:0]
T[2:0] = 001
RSA, RSB
RSA = 0, RSB = 1
OS
OS = 0
BSn = 1: Tr = ON
BS[4:1]
BSn = 0
VHF-LO
VHF-HI
UHF
X
10
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|---|---|
| SN761678BDBTG4 | 功能描述:調(diào)諧器 TV Tuner IC RoHS:否 制造商:NXP Semiconductors 功能: 噪聲系數(shù): 工作電源電壓: 最小工作溫度: 最大工作溫度: |
| SN761678BDBTR | 功能描述:調(diào)諧器 TV Tuner IC RoHS:否 制造商:NXP Semiconductors 功能: 噪聲系數(shù): 工作電源電壓: 最小工作溫度: 最大工作溫度: |
| SN761678BDBTRG4 | 功能描述:調(diào)諧器 TV Tuner IC RoHS:否 制造商:NXP Semiconductors 功能: 噪聲系數(shù): 工作電源電壓: 最小工作溫度: 最大工作溫度: |
| SN761678BDCHR | 功能描述:調(diào)諧器 TV Tuner IC RoHS:否 制造商:NXP Semiconductors 功能: 噪聲系數(shù): 工作電源電壓: 最小工作溫度: 最大工作溫度: |
| SN761678DBT | 制造商:Rochester Electronics LLC 功能描述:- Tape and Reel |
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