參數(shù)資料
型號: S1M8660AX01-F0T0
元件分類: 通信及網(wǎng)絡(luò)
英文描述: SPECIALTY TELECOM CIRCUIT, CBCC48
封裝: 7 X 7 MM, BCC-48
文件頁數(shù): 28/32頁
文件大?。?/td> 270K
代理商: S1M8660AX01-F0T0
RX IF/BBA WITH GPS
S1M8660A (Preliminary)
5
PIN DESCRIPTION (Continued)
Pin No
Symbol
I/O
Description
32
SLEEPB/CLK
DI
When SEN is high, this pin inputs the clock with the permit of the 3-
line serial control input. When SEN is low, parallel control input is
allowed and this pin performs SLEEPB. If this pin is opened, it
remains at Low.
36
TCXO
AI
Reference frequency input terminal connected to the VCTCXO output.
When this pin stops, only DC bias is delivered to maintain the DC
charge value of the capacitor connected externally.
37
TCXO/N
DO
Division output of the TCXO Reference frequency input. 3-different
division ratio and 2- output drive capacities can be selected through
the SPI bus control. Default : 4.92MHz, Weak OUT *division ratio : 1,
1/4, 1/16
38
CHIPx8
BI
CHIPx8 CLOCK output terminal. It has a division ratio of 512/1025 for
the TCXO reference frequency.
Therefore, it cannot have a perfect 50% duty. When this terminal is
not used (CDMA SLEEP, FM IDLE), it remains at Low. This pin can
be used exclusively for the externally generated CHIPx8 CLOCK input
using the SPI BUS control.
39
40
41
42
45
46
47
48
RXQD3
RXQD2
RXQD1
RXQD0
RXID3
RXID2
RXID1/FMRID
RXID0/FMRQD
DO
CDMA A-D Converter's digital outputs, which are connected to the
modem data input pins. These data are synchronized at CHIP
×8's
rising edge and output. Because they are valid at the falling edge, the
data are latched at the falling edge in the modem.
Because the number of 48-pins are restricted in this product, pins 47
and 48 are shared with the FMDATA pin.
4, 6,
14,
15, 17,
20, 24
VDDA
AI
Power input terminal for the analog circuit.
35
VDDD
DI
Power for the digital logic.
44
VDDM
DI
Power source for a logic circuit, related to the digital input /output,
connected to an external digital logic such as the modem.
3, 5, 8,
13, 16,
18, 19,
23, 43
GND
AI
Analog circuit ground.
Pin-18 is N.C. in the product.
34
GNDD
DI
Digital logic circuit ground.
33
NC
-
This pin is used for internal testing only and is not connected to
anything.
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