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Overview
6.1Overview
The VCXO interpolated control (VIC) port provides
When the video port is used in transport stream interface (TCI) mode, the VIC port is used to control the system clock, VCXO, for MPEG transport stream (Figure
The VIC port supports following features:
∙
∙Programmable precision from 9 to 16 bits
Figure 6-1. TCI System Block Diagram
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| VDATA[7−0](TSIdatain) |
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| VCLK1(TSIclock) | Satellite/ |
|
| cable | |
Video |
| VCTL1(CAPENA) | |
| decoder | ||
port A |
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| |
| VCTL2(PACSTRT) | with | |
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| ||
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| VCTL3(PACERR) | FEC |
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|
| |
|
| 5VDC |
|
DSP |
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| 2.2k Ω |
|
|
|
| VCXO |
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|
| 27MHz |
| VDAC | 22k Ω | 0.1 |
VIC |
| ||
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| ||
|
| mF | |
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| |
|
| 100pF |
|
| STCLK |
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6.2Interface
The pin list for VIC port is shown in Table
Table 6-1. VIC Port Interface Signals
VIC Port Signal | Direction | Description |
VDAC | Output | VCXO control |
STCLK | Input | System time clock |
168 | VCXO Interpolated Control Port | SPRUEM1 |