ADV7174/ADV7179
CLOSED CAPTIONING ODD FIELD DATA REGISTERS 1–0
Bits:
CCD15–CCD0
Subaddress:
SR4–SR0 = 10H–11H
These 8-bit-wide registers are used to set up the closed captioning data bytes on odd fields. Figure 47 shows how the high and low bytes
are set up in the registers.
CCD15 CCD14 CCD13 CCD12 CCD11 CCD10 CCD9 CCD8
CCD7 CCD6 CCD5 CCD4 CCD3 CCD2 CCD1 CCD0
Figure 47. Closed Captioning Data Register
BYTE 1
BYTE 0
NTSC PEDESTAL/PAL TELETEXT CONTROL REGISTERS 3–0
Bits:
Subaddress:
PCE15–PCE0, PCO15–PCO0/TXE15–TXE0, TXO15–TXO0
SR4–SR0 = 12H–15H
These 8-bit-wide registers are used to enable the NTSC pedestal/ PAL Teletext on a line-by-line basis in the vertical blanking interval for
both odd and even fields. Figure 48 and Figure 49 show the four control registers. A Logic 1 in any of the bits of these registers has the
effect of turning the pedestal off on the equivalent line when used in NTSC. A Logic 1 in any of the bits of these registers has the effect of
turning Teletext on the equivalent line when used in PAL.
LINE 17 LINE 16 LINE 15 LINE 14 LINE 13 LINE 12 LINE 11 LINE 10
PCO7
LINE 25 LINE 24 LINE 23 LINE 22 LINE 21 LINE 20 LINE 19 LINE 18
PCO15 PCO14 PCO13 PCO12 PCO11 PCO10 PCO9 PCO8
PCO6 PCO5
PCO4
PCO3 PCO2
PCO1
PCO0
FIELD 1/3
FIELD 1/3
LINE 17 LINE 16 LINE 15 LINE 14 LINE 13 LINE 12 LINE 11 LINE 10
PCE7 PCE6 PCE5 PCE4 PCE3 PCE2 PCE1 PCE0
FIELD 2/4
FIELD 2/4
LINE 25 LINE 24 LINE 23 LINE 22 LINE 21 LINE 20 LINE 19 LINE 18
PCE15 PCE14 PCE13 PCE12 PCE11 PCE10 PCE9
PCE8
Figure 48. Pedestal Control Registers
LINE 14 LINE 13 LINE 12 LINE 11 LINE 10 LINE 9 LINE 8 LINE 7
TXO7 TXO6 TXO5 TXO4 TXO3 TXO2 TXO1 TXO0
FIELD 1/3
FIELD 1/3
LINE 22 LINE 21 LINE 20 LINE 19 LINE 18 LINE 17 LINE 16 LINE 15
TXO15 TXO14 TXO13 TXO12 TXO11 TXO10 TXO9 TXO8
LINE 14 LINE 13 LINE 12 LINE 11 LINE 10 LINE 9 LINE 8 LINE 7
TXE7 TXE6 TXE5 TXE4 TXE3 TXE2 TXE1 TXE0
FIELD 2/4
FIELD 2/4
LINE 22 LINE 21 LINE 20 LINE 19 LINE 18 LINE 17 LINE 16 LINE 15
TXE15 TXE14 TXE13 TXE12 TXE11 TXE10
TXE9
TXE8
Figure 49. Teletext Control Registers
Rev. B | Page 36 of 52
ADI [ ADI ]
