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參數(shù)資料
| 型號： | 935251700112 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PDSO28 |
| 封裝： | PLASTIC, SOT-341, SSOP-28 |
| 文件頁數(shù)： | 33/35頁 |
| 文件大小： | 262K |
| 代理商： | 935251700112 |
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1999 Jan 13
7
Philips Semiconductors
Product specication
5 V mixer/oscillator-PLL synthesizers for
hyperband tuners
TDA6404; TDA6405;
TDA6405A
Table 1
I2C-bus mode, write data format for the TDA6404 and TDA6405
Table 2
I2C-bus mode, write data format for the TDA6405A
I2C-bus address selection
The module address contains programmable address bits (MA1 and MA0) which offer the possibility of having several
synthesizers (up to 4) in one system by applying a specific voltage on the AS input. The relationship between MA1 and
MA0 and the input voltage applied to the AS input is given in Table 4.
Table 3
Description of symbols used in Tables 1 and 2
NAME
BYTE
BITS
ACK
MSB
LSB
Address byte
ADB
11000
MA1
MA0
R/W=0
A
Divider byte 1
DB1
0
N14
N13
N12
N11
N10
N9
N8
A
Divider byte 2
DB2
N7
N6
N5
N4
N3
N2
N1
N0
A
Control byte
CB
1
CHP
T2
T1
T0
RSA
RSB
OS
A
Band-switch byte
BB
XXXXX
UHF
VHFH
VHFL
A
NAME
BYTE
BITS
ACK
MSB
LSB
Address byte
ADB
11000
MA1
MA0
R/W=0
A
Divider byte 1
DB1
0
N14
N13
N12
N11
N10
N9
N8
A
Divider byte 2
DB2
N7
N6
N5
N4
N3
N2
N1
N0
A
Control byte
CB
1
CHP
T2
T1
T0
RSA
RSB
OS
A
Band-switch byte
BB
XXXX
UHF
X
VHFH
VHFL
A
SYMBOL
DESCRIPTION
A
acknowledge
MA1 and MA0
programmable address bits (see Table 4)
N14 to N0
programmable divider bits; N = N14
× 214 + N13 × 213 + ... + N1 × 21 +N0
CHP
charge pump current bit:
CHP = 0; ICP =60 A
CHP = 1; ICP = 280 A (default)
T2, T1 and T0
test bits (see Table 5)
RSA and RSB
reference divider ratio select bits (see Table 6)
OS
tuning amplier control bit:
OS = 0; normal operation; tuning voltage is ‘ON’
OS = 1; tuning voltage is ‘OFF’ (high-impedance)
UHF, VHFH and VHFL
PNP ports control bits:
bit = 0; buffer n is ‘OFF’ (default)
bit = 1; buffer n is ‘ON’
X
don’t care bit: may be a logic 0 or a logic 1
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