參數(shù)資料
型號: TDA7421N
廠商: STMICROELECTRONICS
元件分類: 接收器
英文描述: AM/FM, AUDIO SINGLE CHIP RECEIVER, PQFP64
封裝: TQFP-64
文件頁數(shù): 21/47頁
文件大小: 374K
代理商: TDA7421N
I2C bus interface
TDA7421N
Figure 9.
IF counter block diagram
Figure 10.
I2C bus timing diagram
CF
Center frequency IF counter
IFS
Sampling time IF counter
PM
Standby, FM, AM, AM swallow mode (PLL mode)
D
Programmable delay for lock detector
LPIN1/2
Loop filter input select
A
Charge pump high current
B
Charge pump low current
LDENA
Lock detector enable
CURRH
Set current high
Table 12.
Control register function (continued)
REGISTER NAME
FUNCTION
11-21 BIT COUNTER
CF-REGISTER
3 BIT COUNTER
14 BIT COUNTER
ZD
IFS-REGISTER
IFC-REGISTER
EW-REGISTER
UP/DOWN COUNTER
IFENA
IF-AM
IF-FM
OSC
D97AU809
D95AU378
tHIGH
tR
tLOW
tR
SCL
SDA IN
SDA OUT
tSU-STA
tHD-STA
tHD-DAT
tSD-DAT
tSUBTOP
ttxt
tAA
tDH
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