pnx8510 NXP Semiconductors, pnx8510 Datasheet - Page 25

• Manufacturer Part Number: pnx8510
• Description: Analog Companion Chip
• Manufacturer: NXP Semiconductors

Philips Semiconductors
9397 750 12612
Product data
The first table is called “Line_Count_Array” and serves as an array to hold the correct
sequence of lines composing the synchronization raster. It can contain up to 16
entries. Each entry holds a 4-bit index (counted from 1 through 16)) and a 10-bit
counter value.
The 4-bit index is a pointer to a line in the next table called “Line_Type_Array.” A 10-bit
counter value specifies how often this particular line is repeated. If the necessary line
count for a particular line exceeds the 10 bits, it has to use two table entries. This
table has to be terminated with a dummy entry containing a ‘0’ index and ‘0’ line
count.
The second table, “Line_Type_Array” holds up to 15 entries (counted from 1 through
15). Each entry can contain up to eight index pointers which point to another table
called, “Line_Pattern_Array.” These pointers represent parts of a line raster. A line
may be split up into a sync, a blank and an active portion followed by another blank
portion, which would require four index pointers in one entry of the table. It is possible
to have less than eight index pointers in any entry, in which case those index pointers
should be filled with ‘0.
The third table is called “Line_Pattern_Array” and it can contain a maximum of seven
entries (counted from 1 though 7). The entries are used to define portions of a line
representing a certain value for a certain number of clock cycles. Each of these seven
entries can store up to four groups of “duration, select and value index.” It is possible
to have less than four groups in any entry, in which case those groups should be filled
Fig 22. Sync engine list dependencies
G/U-Vallue_Array
R/Y-Vallue_Array
B/V-Vallue_Array
4-bit line type index
Line_Type_Ptr
10-bit value
10-bit value
10-bit value
8 entries
8 entries
8 entries
Rev. 04 – 12 January 2004
3
3
Line_Count_Array
Line_Type_Array
10-bit line count
3
3
3-bit value index
16 entries
15 entries
10-bit duration
1-bit select
3
3
Event_Type_Ptr
3
3
3
3
Line_Pattern_Array
3-bit value index
10-bit duration
3
3
7 entries
1-bit select
3
3
Line_Count_Ptr
Line_Pattern_Ptr
3
3
3-bit value index
Pattern_Ptr
10-bit duration
1-bit select
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
PNX8510/11
Analog companion chip
3-bit value index
10-bit duration
1-bit select
MDB650
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