hsp50214a Intersil Corporation, hsp50214a Datasheet - Page 35

• Manufacturer Part Number: hsp50214a
• Description: Programmable Downconverter
• Manufacturer: Intersil Corporation

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.
TABLE 14. EXAMPLE 1 SERIAL OUTPUT CONTROL SETTINGS
NOTE: Because all but the first data word in the serial output is iden-
NOTE: Each type of data word should be used only once in each
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.
BIT POSITION
CONTROL
WORD 19
30-28
27-25
24-21
20-18
17-15
14-12
11-9
8-6
5-3
2-0
tified by the data type that it follows, SEROUTB can only be
fully independent of the sequence in SEROUTA if it does not
use any of the same data word types. This implies a partition
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.
data stream. If the “Link following I data” is programmed
with the data type identifier for I, then the part will repeat the
I data word until all of the data word locations are filled. In Ex-
ample 1, if bits 20-18 were erroneously programmed to 000 (I
data) then the SEROUTA would be four sequential repeats of
the I data word.
SEROUTA Data Source
SEROUTB Data Source
Number of Serial Word
Links in a Chain
Link following I data
Link following Q data
Link following |r| data
Link following data
Link following f data
Link following AGC data
Link following Timing
Error data
FUNCTION
VALUE
XXX
BIT
000
010
100
001
011
100
111
101
110
RESULT
(Timing)
(Zeros)
(AGC)
(N/A)
(|r|)
(Q)
(4)
( )
(I)
(f)
HSP50214A
35
TABLE 15. EXAMPLE 2 SERIAL OUTPUT CONTROL SETTINGS
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.
BIT POSITION
start
I data word >
Q data word >
|r|data word >
end >
start
Q data word >
|r|data word >
TBD data word>
end >
CONTROL
WORD 19
30-28
27-25
24-21
20-18
17-15
14-12
11-9
8-6
5-3
2-0
SEROUTA:
SEROUTB:
SEROUTA Data Source
SEROUTB Data Source
Number of Serial Word
Links in a Chain
Link following I data
Link following Q data
Link following |r| data
Link following
Link following f data
Link following AGC data
Link following Timing
Error data
FUNCTION
data
SEROUTA source data = 000
Link following I data = 001
Link following Q data = 010
SEROUTB source data = 001
Link following Q data = 010
Link following |r| data = TBD
CONTROL WORD 19 FIELD
CONTROL WORD 19 FIELD
VALUE
TBD
XXX
XXX
XXX
XXX
BIT
000
001
011
001
010
RESULT
(N/A)
(N/A)
(N/A)
(N/A)
TBD
(Q)
(Q)
(|r )
(3)
(I)