sm5309a Nippon Precision Circuits Inc, (NPC), sm5309a Datasheet - Page 12

• Manufacturer Part Number: sm5309a
• Description: 3-channel Video Buffer With Built-in Wideband Lpf
• Manufacturer: Nippon Precision Circuits Inc, (NPC)

1st byte: slave address
The ADS pin can set one of three slave addresses. Note that D0 must be “0 (Write)”. The input circuit of ADS
pin is placed in analog supply (VCC, GND) area.
2nd byte: subaddress
The 2nd byte sets the subaddress, selecting one of three registers.
3rd byte: control data
The 3rd byte control data sets the register flags corresponding to the subaddress selected by 2nd byte. The flags
assigned are shown in the following table.
FCSET
CONDITION1
CONDITION2
FCSET
CONDITION1
CONDITION2
Register name
Register name
L: GND
H: VCC
Open
ADS
FCM
CB5
D7
PD
HEX
HEX
90h
92h
94h
01h
02h
03h
MUX
FC6
CB4
D6
HALF
FC5
CB3
D7
D7
D5
1
1
1
0
0
0
3rd byte: control data
BYPASS
FC4
CB2
D6
D6
D4
0
0
0
0
0
0
SM5309A
1st byte: slave address
2nd byte: subaddress
CB1
FC3
D5
D5
D3
−
0
0
0
0
0
0
FC2
CB0
D4
D4
D2
1
1
1
0
0
0
–
FC1
D3
D3
D1
0
0
0
0
0
0
−
−
SEIKO NPC CORPORATION —12
FC0
D2
D2
D0
0
0
1
0
0
0
–
−
D1
D1
0
1
0
0
1
1
0 (W)
0 (W)
0 (W)
D0
D0
1
0
1