參數(shù)資料









型號(hào)：
HSP50214A




廠商：
Intersil Corporation




英文描述：
Programmable Downconverter




中文描述：
可編程變頻器




文件頁(yè)數(shù)：
35/60頁(yè)




文件大?。?/td>
467K




代理商：
HSP50214A








	

    
    

    

	
35
Serial Output Configuration Example 1:
It is desired to output the I data word, followed by the Q data
word, followed by the Phase data word on the SEROUTA out-
put. Similarly, it is desired to output the Magnitude data word
followed by the Frequency data word, followed by the Timing
Error data word, followed by the AGC Level data word on the
SEROUTB output. Table 14 illustrates how Control Word 19
should be programmed.
NOTE: Becauseallbutthefirstdatawordintheserialoutputisiden-
tified by the data type that it follows, SEROUTB can only be
fullyindependentofthesequenceinSEROUTAifitdoesnot
useanyofthesamedatawordtypes.Thisimpliesapartition
as described in Example 1. Once a data word that is used in
SEROUTA is called out in SEROUTB, the remaining se-
quence in SEROUTB will be identical to that portion of SE-
ROUTA sequence that follows the duplicate data type. This
follows from using the “Link follows ‘data type’ data” for
word linkage.
NOTE: Each type of data word should be used only once in each
data stream. If the “Link following I data” is programmed
with the data type identifier for I
,
 then the part will repeat the
Idataworduntilallofthedatawordlocationsarefilled.InEx-
ample1,ifbits20-18wereerroneouslyprogrammedto000(I
data)thentheSEROUTAwouldbefoursequentialrepeatsof
the I data word.
Serial Output Configuration Example 2:
It is desired to output only three data words on each serial out-
put. The I data word, followed by the Q data word, followed by
the Magnitude data word is to be output on SEROUTA. The Q
data word followed by the Magnitude data word, followed by
the one other data word to be output on SEROUTB. The
choices for the remaining data word in the SEROUTB signal
are: phase, frequency, AGC level and timing error. Table 15
illustrates how Control Word 19 should be programmed.
The serial data stream looks like:
As shown by this example, once Q was linked to |r| in the
SEROUTA chain, the SEROUTB chain must have |r| following Q, if
Q is selected. Figure 35 illustrates the construction of the serial out-
put streams. If the serial data stream was changed to be a length of
four data words, then, by default, the SEROUTA would be whatever
is selected for SEROUTB data word 3. SEROUTB would need to
identify the fourth data word.
 Thus, SEROUTA and SEROUTB are
not fully independent because they share the Q data word
(and by default, the MAGNITUDE follows Q data link and whatever
is selected for data word 3 to follow MAGNITUDE data in
SEROUTB).
The other signals provided with the SEROUTA and SEROUTB are
the SERSYNC and the SERCLK. The SERSYNC signal can be
programmed in either early or late sync mode. The sync signal is
pulsed active low or active high for each information word link of the
chain of data created using Control Word 19. Figure 36 shows the
four possible configurations of SERSYNC as programmed using
Control Word 20.
As previously discussed, Control Word 20, Bits 17 and 19, set the
functionality of the LSB of each data word. These bits may be pro-
grammed to be either a logic “0”, logic “1” or as normal data. The
fixed states are designed to allow the microprocessor to synchro-
nize to the serial data stream.
TABLE 14. EXAMPLE 1 SERIAL OUTPUT CONTROL SETTINGS
CONTROL
WORD 19
BIT POSITION
FUNCTION
BIT
VALUE
RESULT
30-28
SEROUTA Data Source
000
(I)
27-25
SEROUTB Data Source
010
(|r|)
24-21
Number of Serial Word
Links in a Chain
100
(4)
20-18
Link following I data
001
(Q)
17-15
Link following Q data
011
(
φ
)
14-12
Link following |r| data
100
(
f
)
11-9
Link following
 φ
 data
111
(Zeros)
8-6
Link following
 f
 data
101
(Timing)
5-3
Link following AGC data
XXX
(N/A)
2-0
Link following Timing
Error data
110
(AGC)
TABLE 15. EXAMPLE 2 SERIAL OUTPUT CONTROL SETTINGS
CONTROL
WORD 19
BIT POSITION
FUNCTION
BIT
VALUE
RESULT
30-28
SEROUTA Data Source
000
(I)
27-25
SEROUTB Data Source
001
(Q)
24-21
Number of Serial Word
Links in a Chain
011
(3)
20-18
Link following I data
001
(Q)
17-15
Link following Q data
010
(|r
|
)
14-12
Link following |r| data
TBD
TBD
11-9
Link following
 φ
 data
XXX
(N/A)
8-6
Link following
 f
 data
XXX
(N/A)
5-3
Link following AGC data
XXX
(N/A)
2-0
Link following Timing
Error data
XXX
(N/A)
SEROUTA:
CONTROL WORD 19 FIELD
start
I data word >
SEROUTA source data = 000
Q data word >
Link following I data = 001
|r|data word >
Link following Q data = 010
end >
SEROUTB:
 CONTROL WORD 19 FIELD
start
Q data word >
SEROUTB source data = 001
|r|data word >
Link following Q data = 010
TBD data word>
Link following |r| data = TBD
end >
HSP50214A

    

    
    








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