VT1621M VIA, VT1621M Datasheet - Page 5

• Manufacturer Part Number: VT1621M
• Description: TV Encoder
• Manufacturer: VIA

PACKAGE MECHANICAL SPECIFICATIONS ........................................................................................................................38
FIGURE 1. FUNCTIONAL BLOCK DIAGRAM..........................................................................................................................2
FIGURE 2. PIN DIAGRAM (TOP VIEW) .....................................................................................................................................3
FIGURE 3. MASTER CLOCK MODE 1......................................................................................................................................14
FIGURE 4. MASTER CLOCK MODE 2......................................................................................................................................15
FIGURE 5. SLAVE CLOCK MODE ............................................................................................................................................15
FIGURE 6. INPUT INTERFACE PROTOCOL ..........................................................................................................................16
FIGURE 7. INTERLACED 525-LINE (NTSC) VIDEO TIMING..............................................................................................18
FIGURE 8. INTERLACED 525-LINE (PAL-M) VIDEO TIMING ...........................................................................................19
FIGURE 9. INTERLACED 625-LINE (PAL-B, D, G, H, I, NC) VIDEO TIMING (FIELDS 1-4)..........................................20
FIGURE 10. INTERLACED 625-LINE (PAL-B, D, G, H, I, NC) VIDEO TIMING (FIELDS 5-8)........................................21
FIGURE 11. INTERLACED 625-LINE (PAL-N) VIDEO TIMING (FIELDS 1-4)..................................................................22
FIGURE 12. INTERLACED 625-LINE (PAL-N) VIDEO TIMING(FIELDS 5-8)...................................................................23
FIGURE 13. 525-LINE (NTSC/PAL-M) Y (LUMA) VIDEO TEST PATTERN WAVEFORM .............................................24
FIGURE 14. 625-LINE (PAL-B, D, G, H, I, N, NC) Y (LUMA) TEST PATTERN WAVEFORM.........................................24
FIGURE 15. 525-LINE (NTSC/PAL-M) C (CHROMA) VIDEO TEST PATTERN WAVEFORM.......................................25
FIGURE 16. 625-LINE (PAL-B, D, G, H, I, N, NC) C (CHROMA) VIDEO TEST PATTERN WAVEFORM ....................25
FIGURE 17. COMPOSITE 525-LINE (NTSC/PAL-M) VIDEO TEST PATTERN WAVEFORM........................................26
FIGURE 18. COMPOSITE 625-LINE (PAL-B, D, G, H, I, N,NC) VIDEO TEST PATTERN WAVEFORM ......................26
FIGURE 19. LUMINANCE LOWPASS FILTER RESPONSE (27 MHZ)................................................................................30
FIGURE 20. CHROMINANCE LOWPASS FILTER RESPONSE (27MHZ) ..........................................................................31
FIGURE 21. GROUND PLANE WITH 4 LAYER PCB..............................................................................................................33
FIGURE 22. MECHANICAL SPECIFICATION – 44-PIN TQFP THIN QUAD FLAT PACK .............................................38
TABLE 1. PIN LIST (ALPHABETICAL ORDER) .......................................................................................................................4
TABLE 2. PIN DESCRIPTIONS .....................................................................................................................................................5
TABLE 3. REGISTER SUMMARY................................................................................................................................................6
TABLE 4. INPUT DATA FORMAT .............................................................................................................................................17
TABLE 5. DISPLAY MODES FOR PAL (M)..............................................................................................................................27
TABLE 6. DISPLAY MODES FOR NTSC (M, J) & PAL (B, D, G, H, I, N, NC) ....................................................................29
TABLE 7. CLOCK SETTINGS .....................................................................................................................................................32
Revision 1.0 June 17, 2002
P
DC S
DAC DC C
DAC AC C
D
PLL C
OWER
ISPLAY
PECIFICATIONS
We Connect
We Connect
We Connect
We Connect
HARACTERISTICS
S
UPPLY
S
IGNAL
HARACTERISTICS
HARACTERISTICS
C
C
URRENT AND
HARACTERISTICS
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T
OTAL
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P
OWER
L
L
C
IST OF
IST OF
ONSUMPTION
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F
T
IGURES
S
ABLES
PECIFICATIONS
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VT1621 / VT1621M TV Encoder
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