sm5351af1 Seiko NPC Corp., sm5351af1 Datasheet - Page 19

• Manufacturer Part Number: sm5351af1
• Description: Audio Video Switch
• Manufacturer: Seiko NPC Corp.

Register name: D1SW, D2SW
Sub-address: 00h, bit1 to bit0
Returns the connections condition of D-terminal connectors.
(It discriminates DC voltage of D1SW or D2SW pin. These pins are pulled-up in IC internally.)
Register name: S2-1, S2-2
Sub-address: 01h to 02h, bit7 to bit6
Returns the discriminated result of S2 signals.
(It discriminates DC voltage of S2-1 or S2-2 pin. These pins are pulled-down in IC internally.)
bit7
bit7
0
0
1
1
0
0
1
1
Status Register
Status Register
Status Register
Status Register
sub addr. 00h
sub addr. 00h
sub addr. 01h
sub addr. 02h
bit1
bit0
0
1
0
1
bit6
bit6
0
1
0
1
0
1
0
1
(don’t care)
(don’t care)
and < 2.4V
and < 2.4V
< 0.8V
> 1.4V
> 3.5V
< 0.8V
> 1.4V
> 3.5V
S2-1
S2-2
INPUT pin
INPUT pin
INPUT pin
INPUT pin
DC level
DC level
DC level
DC level
> 3.2V
< 1.8V
> 3.2V
< 1.8V
D1SW
D2SW
< 1.8V
< 1.8V
< 1.8V
> 3.2V
< 1.8V
< 1.8V
< 1.8V
> 3.2V
S-1
S-2
Connector of D-terminal 1 is disconnected.
Connector of D-terminal 1 is connected.
Connector of D-terminal 2 is disconnected.
Connector of D-terminal 2 is connected.
Video signal of S-video terminal 1 is ‘4:3’.
Video signal of S-video terminal 1 is ‘4:3 letter box’.
Video signal of S-video terminal 1 is ‘16:9 squeeze’.
Connector of S-video terminal 1 is disconnected.
Video signal of S-video terminal 2 is ‘4:3’.
Video signal of S-video terminal 2 is ‘4:3 letter box’.
Video signal of S-video terminal 2 is ‘16:9 squeeze’.
Connector of S-video terminal 2 is disconnected.
SM5351AF1
Description
Description
Description
Description
SEIKO NPC CORPORATION —19