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Can the dot clock be checked in the uPD6466?

Latest Updated:03/01/2006

Question:

Can the dot clock be checked in the uPD6466?

Answer:

Although the dot clock frequency can be measured by using the CLKOUT pin in the uPD6461 or uPD6462, the uPD6466 does not have this kind of pin.
In the uPD6466, the dot clock can be output from the BLK1 pin by connecting the TEST pin to VDD and transferring the test mode command shown below.

2-byte command (MSB)

D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
1 0 1 1 0 0 0 0 0 0 0 0 1 1 0 0

2-byte command (LSB)

D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D14 D15
0 0 0 0 1 1 0 1 0 0 1 1 0 0 0 0



Caution Use this command only for checking the dot clock.

Suitable Products
Diodes for Constant Voltage