MAX4399CTK Maxim, MAX4399CTK Datasheet - Page 17

• Manufacturer Part Number: MAX4399CTK
• Description: Audio/Video Switch for Three SCART Connectors
• Manufacturer: Maxim

Figure
The MAX4399 is compatible with existing I
SCL and SDA are high-impedance inputs. SDA has an
open drain that pulls the data line low during the 9th
clock pulse.
application. The communication protocol supports the
standard I
address is ignored, and CBUS formats are not supported.
The MAX4399 address is compatible with the 7-bit I
addressing protocol only. No 10-bit formats are support-
ed. RESTART protocol is supported, but an immediate
STOP condition is necessary to update the MAX4399.
Figure
SDA
SCL
6. Multiple Devices Controlled by a 2-Wire Interface
7. Start and Stop Conditions on a 2-Wire Interface
START CONDITION
R
2
R
S
S
C 8-bit communications. The general call
*
* IS OPTIONAL.
SDA
Figure
µC
______________________________________________________________________________________
SCL
8 shows a typical I
SDA
SDA
SDA
SCL
SCL
SCL
OTHER DEVICE #1
OTHER DEVICE #2
Audio/Video Switch for Three SCART
MAX4399
V_DIG
I
V
V
2
DD
DD
C Compatibility
V
DD
STOP CONDITION
2
2
C interface
C systems.
2
C
The I
defined as V
include Schmitt-trigger buffers to accept slow-transition
interfaces. The digital inputs are compatible with 3V
CMOS logic levels.
INTERRUPT_OUT is an open-drain output that
becomes high impedance when a change in any of the
slow-switch signals occurs. Clear INTERRUPT_OUT by
setting bit 3 of register 04h low.
Write mode
Read mode
Where S = Start Condition, A = Acknowledge, P = Stop
Condition.
Figure
S
S
2
8. A Typical I
C-compatible, 2-wire interface has logic levels
Address
Address
Slave
Slave
Data Format of the 2-Wire Interface
SDA SCL
Digital Inputs and Interface Logic
OL
µC
= 0.8V and V
2
C Interface Application
A
A
Register
Address
Register
Address
INTERRUPT_OUT Signal
SCL
SDA
SCL
SDA
SCL
SDA
OTHER DEVICE #1
OTHER DEVICE #2
Connectors
OH
MAX4399
= 2.0V. All of the inputs
A
A
V_DIG
V
V
DD
DD
Data
Data
V
DD
A
A
P
P
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