S1M8836X01-G0T0 Просмотр технического описания (PDF) - Samsung

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S1M8836X01-G0T0

FRACTIONAL-N RF/INTEGER-N IF DUAL PLL

Samsung 

FRACTIONAL-N RF/INTEGER-N IF DUAL PLL

RF Fractional Counter

MSB

RF_CTL_WORD[21:19]

21

Program Code

19 18

S1M8836/37

W4[21:0]

FRAC_CNTR[18:2]

Division Ratio of the RF Fractional

Counter

LSB

1

1

21

0

Control Bits

• RF Fractional Counter Value (F Counter)

FRAC_ CNTR[18:2] ; for S1M8836/37 RF

Counter Value (F) F F F F F F F F 9 F 8 F 7 F 6 F 5 F 4 F 3 F 2 F 1 F 0

16 15 14 13 12 11 10

31488

00111101100000000

•

•••••••••••••••••

2

00000000000000010

1

00000000000000001

0

00000000000000000

-1

11111111111111111

-2

11111111111111110

•

•••••••••••••••••

-31488

11000010100000000

F Counter Value: -31488(2's complementary) to 31488

NOTE: For a negative integer, the counter value should be inputted as the corresponding 2's complementary binary

code.

For instance, the 2's complementary binary code of -2 is 1 1111 1111 1111 1110.

19

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