cxa3516r Sony Electronics, cxa3516r Datasheet - Page 37

• Manufacturer Part Number: cxa3516r
• Description: 3-channel 8-bit 165msps A/d Converter Amplifier Pll
• Manufacturer: Sony Electronics

3-wire Bus Mode
1) Write mode
XSENABLE
XSENABLE
Various control can be performed by setting the internal control register values via the serial interface
comprised of the three pins SDA (Pin 9), SCL (Pin 10) and XSENABLE (Pin 11).
Data can be accepted when XSENABLE is low level. When XSENABLE is high level, data cannot be
accepted. The SDA pins of multiple IC can also be connected to the same bus line and each IC can be
controlled independently by XSENABLE.
XSENABLE may change the state when SCL is high level.
8-bit control data consisting of a 7-bit sub address and 1-bit READ/WRITE setting is input in series from the
LSB to the SDA pin. When READ/WRITE setting is "1", data can be written to register. When this IC is used
in 3-wire bus mode, the sub address is 5 bits, so always set the 2 MSB bits to "0".
Input the clock to the SCL pin. Data is loaded to the SDA pin at the rising edge of this clock. The data is set
in the register at the rising edge of XSENABLE.
The SDA and SCL pins are also used in I
Set the VCO post-stage frequency divider (DIV1, 2, 4, 8) and programmable counter (VCODIV) in the
following order. The data is set when Register1 is sent.
SDA
SDA
SCL
SCL
Register0 (SUB ADDRESS (H): 00)
Register1 (SUB ADDRESS (H): 01)
LSB
A0
T
ENS
A1
T
DS
A2
SUB ADDRESS
A3
T
DH
A4
2
A5
C bus control mode.
0
MSB
A6
0
READ/WRITE
READ/WRITE
– 37 –
0: READ Mode
1: WRITE Mode
1
LSB
D0
D1
D2
D3
DATA
D4
D5
T
ENH
D6
T
ENPW
MSB
D7
CXA3516R