PCI930

3-TO-1 ZOOMED VIDEO SWITCH

SCPS018B – OCTOBER 1997 – REVISED DECEMBER 1997

8

POST OFFICE BOX 655303

Table 7 and Table 8 define the control settings that allow the PCI930 to route the ZV data from the three inputs

(A_xx, B_xx, or C_xx) to the output (ZV_xx). The Tables are separated based upon the configuration of the

PCI930.

Table 7. Output When Inputs A/B Have Precedence Over Input C

INPUTS

CONTROL SETTINGS

OUTPUT

A_XX

B_XX

C_XX

A/B_STAT

A/B_SEL

C_STAT

ZV_OE

at ZV_xx

X

X

X

X

X

X

1

†

Non ZV data

Non ZV data

Non ZV data

0

X

0

X

†

Non ZV data

Non ZV data

ZV data

0

X

1

X

C_xx

Non ZV data

ZV data

Non ZV data

1

0

X

0

B_xx

Non ZV data

ZV data

ZV data

1

0

X

0

B_xx

Non ZV data

ZV data

ZV data

0

X

1

0

C_xx

ZV data

Non ZV data

Non ZV data

1

1

X

0

A_xx

ZV data

Non ZV data

ZV data

1

1

X

0

A_xx

ZV data

Non ZV data

ZV data

0

X

1

0

C_xx

ZV data

ZV data

Non ZV data

1

1

X

0

A_xx

ZV data

ZV data

Non ZV data

1

0

X

0

B_xx

1

1

X

0

A_xx

ZV data

ZV data

ZV data

1

0

X

0

B_xx

0

X

1

0

C_xx

† Inactive state

Table 8. Output When Input C Has Precedence Over A/B

INPUTS

CONTROL SETTINGS

OUTPUT

A_XX

B_XX

C_XX

A/B_STAT

A/B_SEL

C_STAT

ZV_OE

at ZV_xx

X

X

X

X

X

X

1

†

Non ZV data

Non ZV data

Non ZV data

0

X

0

X

†

Non ZV data

Non ZV data

ZV data

X

X

1

0

C_xx

Non ZV data

ZV data

Non ZV data

1

0

0

0

B_xx

Non ZV data

ZV data

ZV data

1

0

0

0

B_xx

Non ZV data

ZV data

ZV data

X

X

1

0

C_xx

ZV data

Non ZV data

Non ZV data

1

1

0

0

A_xx

ZV data

Non ZV data

ZV data

1

1

0

0

A_xx

ZV data

Non ZV data

ZV data

X

X

1

0

C_xx

ZV data

ZV data

Non ZV data

1

1

0

0

A_xx

ZV data

ZV data

Non ZV data

1

0

0

0

B_xx

1

1

0

0

A_xx

ZV data

ZV data

ZV data

1

0

0

0

B_xx

X

X

1

0

C_xx

† Inactive state