sm5351af1 Seiko NPC Corp., sm5351af1 Datasheet - Page 20

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

Register name: D1L1, D1L2, D1L3
Sub-address: 01h, bit5 to bit0
Returns the discriminated result of D-terminal signals.
(It discriminates DC voltage of D1L1, D1L2 or D1L3 pin. These pins are pulled-down in IC internally.)
Caution of Register Setting
The control register should be writing the value as defined in this specification. If undefined value is written,
SM5351AF1 might operate abnormally.
Power Supply Pin
To using the function of audio block, input V
pins, and input V
input V
V
power supply. I
pin). The SM5351AF1 corresponds to the I
V
IREF Pin
It should be connected a 3.9kΩ ± 1% resistor between IREF pin and GND, because it control internal reference
current. The current flows into the IREF pin in normal operating mode and during output muting.
VREF Pins
The VREF1 and VREF2 pins are the internal reference voltage output. To ensure IC operating stability, it is
recommended that capacitors connects between VREF1 and GND, and connects between VREF2 and GND.
The recommended value is 10µF of each. The voltages on VREF1 and VREF2 are output in normal operating
mode and during output muting.
CCA
CC
bit5
bit3
bit1
power supply (4.75V to 5.25V). When V
0
0
1
1
0
1
0
0
1
1
Status Register
Status Register
Status Register
sub addr. 01h
sub addr. 01h
sub addr. 01h
power supply. There is no relationship in the order of the startup or fall of V
CC
= 4.75V to 5.25V to the VCC1, VCC2, VCC3, VCC4 and VDD pins. It is not necessary to input
2
bit4
bit2
bit0
C-BUS interface (SDA and SCL pin) and control logic circuit uses V
0
1
0
1
0
0
0
1
0
1
CCA
= 8V to 10V, to the VCCA1 and VCCA2 pins. To using only the function of video block,
> 1.4V and < 2.4V
> 1.4V and < 2.4V
INPUT pin
INPUT pin
INPUT pin
DC level
DC level
DC level
< 0.8V
> 3.5V
< 2.4V
> 3.5V
< 0.8V
> 3.5V
D1L1
D1L2
D1L3
–
–
2
CC
C-BUS of 2.7V to 3.6V, but VDD pin should be set the same as
CC
Video signal of D-terminal 1 is ‘480 line’.
Video signal of D-terminal 1 is ‘720 line’.
Video signal of D-terminal 1 is ‘1080 line’.
(undefined)
Video signal of D-terminal 1 is ‘60i’.
Video signal of D-terminal 1 is ‘60p’.
Video signal of D-terminal 1 is ‘4:3’.
Video signal of D-terminal 1 is ‘4:3 letter box’.
Video signal of D-terminal 1 is ‘16:9 squeeze’.
(undefined)
= 4.75V to 5.25V to the VCC1, VCC2, VCC3, VCC4 and VDD
power supply rises, control register is reset to initial value.
SM5351AF1
Description
Description
Description
SEIKO NPC CORPORATION —20
CC
power supply and V
CC
power supply (VDD
CCA