參數(shù)資料
型號(hào)： MC13180
廠商： MOTOROLA INC
元件分類： 通信及網(wǎng)絡(luò)
英文描述： 2.4 GHz Low Power Wireless Transceiver IC for Bluetooth⑩ Applications
中文描述： SPECIALTY TELECOM CIRCUIT, PQCC48
封裝： PLASTIC, QFN-48
文件頁(yè)數(shù)： 36/58頁(yè)
文件大?。?/td> 992K
代理商： MC13180
36
MC13180 Product Preview
MOTOROLA
Functional Description
these values to achieve a constant deviation. This scaling is linear. Two programmable constants are used
to form the equation of a line, the M & B dual
-
port multipliers. M
-
Dual Port Digital Multiplier Value (R17/
15
-
8), determines the slope, and B
-
Dual Port Digital Multiplier Value (R8/7
-
0), determines the intercept.
M
-
Dual Port Digital Multiplier = (f
ref
External) /13MHz * 108
10
B
-
Dual Port Digital Multiplier = (f
ref
External) /13MHz * 100
10
Table 19 contains slope and intercept point values across all supported input reference frequencies.
4.26 Dual-Port Programmable Delay (R7/15-11)
Just as it is necessary to maintain a constant deviation at Port2 of the VCO, it is also necessary to maintain
a constant phase at the FV and FR inputs of the main charge pump. The total delay from the output of the
LUT to the FV input of the charge pump is given as:
LUT
→
FV delay = 10.5 / (f
ref
External)
Likewise, the total delay from the LUT to the FR input of the charge pump is:
LUT
→
FR delay = 28 ns + Delay
where delay is the programmed delay value shown in Table 18. Therefore, for a given external reference
frequency:
Delay = 10.5 / (f
ref
External)
-
28 ns.
Consult Table 18 for the closest available value.
Table 19 lists all values of the programmable delay for supported reference frequencies.
Table 18. Dual-Port Programmable Delay Values
R7/15
-
11
(decimal)
Delay
b10
(ns)
R7/15
-
11
(decimal)
Delay
b10
(ns)
4
167
13
542
5
208
14
583
6
250
15
625
7
292
16
667
8
333
17
708
9
375
18
750
10
417
19
792
11
458
20
833
12
500
21
875
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