參數(shù)資料
型號(hào)： S1M8657X01-E0T0
元件分類： 無(wú)繩電話/電話
英文描述： TELECOM, CELLULAR, BASEBAND CIRCUIT, PQFP48
封裝： 7 X 7 MM, LQFP-48
文件頁(yè)數(shù)： 30/34頁(yè)
文件大小： 281K
代理商： S1M8657X01-E0T0
TX IF/BBA WITH AGC
S1M8657
5
PIN DESCRIPTION (Continued)
PIN
NAME
I/O
Description
32
FMB/DATA
BI
When SEN = high, this pin is used as the SPI data input pin; when
low, it converts to the FMB, the parallel control input. In the parallel
control mode, if this pin becomes low, the IC enters FM Mode and, if
high, CDMA Mode.
33
IDLEB/STB
DI
When SEN = high, this pin is used as the SPI STB(Strobe) pin; when
low, it converts to IDLEB, the parallel control input. In the parallel
control mode, if this pin becomes low, the IC enters the IDLE mode,
and if high, TALK mode.
34
SLSB/CLK
DI
When SEN = high, this pin is used as the SPI CLK input pin; when
low, it converts to the SLSB, the parallel control input and becomes
the input pin for the latter bit of the two GP input select bit.
35
TCXO
AI
External TCXO signal input pin, whose input DC potential is 1.5V from
only the input bias when not operating.
37
PDISET
AO
Pin determining the charge pump current in the PLL, whose operating
voltage is 0.64V. The resistance between this pin and GND
determines the charge-pump current, which is R/0.64.
38
PDOUT
AO
Charge pump current output pin, whose peak current is R/0.64 and
11R/0.64 in the Lock mode and Acquisition mode, respectively. When
not operating, it is at high impedance.
41
FM_MOD
AO
FM modulation FM Baseband output signal, which is sent only in the
FM Talk mode but has high impedance at any other time.
6, 45, 47
VDD
Power pin for the analog circuit.
3, 5, 7,
22, 39,
44, 48
GND
Ground pin for the analog circuit.
21
VDDM
Pin for the digital input/output circuit connected to the modem.
9, 23, 40
VDD_DIG
Digital logic power pin.
10
GND_DIG
Digital circuit ground pin.
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