PNP-1090-P22 데이터 시트보기 (PDF) - Unspecified
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PNP-1090-P22 Datasheet PDF : 8 Pages
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Attribute Definitions
PNP-1090-P22
FIGURE 2: FREQUENCY/CHANNEL (DB0 - DB23) This is a 24 bit string used to set the synthesizer’s
START Frequency, STOP Frequency, STEP Frequency, REF Frequency or CHANNEL number.
DB23 DBn
FC23 FCn
0
0
0
0
0
0
0
0
0
0
DB3
FC3
0
0
0
0
1
DB2
FC2
0
0
0
0
1
DB1
FC1
0
0
1
1
1
DB0
FC0
00
11
02
13
1 15
FREQUENCY/CHANNEL
FIGURE 3: MULTIPLIER (DB24 - DB27) The data in FREQUENCY/CHANNEL (DB0-DB23) is multiplied
by 10n where the value of n is determined by the contents of MULTIPLIER (DB24-DB27) as shown below.
DB27 DB26 DB25 DB24
M3 M2 M1 M0
0
0
0
0 100 X contents of DB0-DB23
0
0
0
1 101 X contents of DB0-DB23
0
0
1
0 102 X contents of DB0-DB23
0
0
1
1 103 X contents of DB0-DB23
n
n
n
n 10n X contents of DB0-DB23
MULTIPLIER
FIGURE 4: FUNCTION SELECT (DB28 - DB31). After the data in FREQUENCY/CHANNEL (DB0 - DB23)
is multiplied by 10n where the value of n is determined by the contents of MULTIPLIER (Figure 3), it is then
routed internally to the START, STOP, STEP, REF or CHANNEL registers based on the contents of FUNC-
TION SELECT as shown below.
DB31 DB30 DB29 DB28
FS3 FS2 FS1 FS0
FUNCTION SELECT
0
0
0
0 CHANNEL. Routes data from DB0-DB23 to the CHANNEL REGISTER.
0
0
0
1 START. Routes data from DB0-DB23 to the START REGISTER.
0
0
1
0 STOP. Routes data from DB0-DB23 to the STOP REGISTER.
0
0
1
1 STEP. Routes data from DB0-DB23 to the STEP REGISTER.
0
1
0
0 REFERENCE. Routes data from DB0-DB23 to the REFERENCE REGISTER
All FUNCTION SELECT values not shown above are reserved for factory use.
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