OM6208 NXP Semiconductors, OM6208 Datasheet - Page 19
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OM6208
Manufacturer Part Number
OM6208
Description
Om6208 65 X 96 Pixels Matrix Grey-scale Lcd Driver
Manufacturer
NXP Semiconductors
Datasheet
1.OM6208.pdf
(68 pages)
- Current page: 19 of 68
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Philips Semiconductors
10 I
10.1
The I
communication between different ICs or modules with
speeds up to 3.4 MHz. The only difference between
Hs-mode slave devices and F/S-mode slave devices is the
speed at which they operate, therefore the buffers on the
SDAH output have an open drain. This is the same for
I
output and a combination of an open-drain pull-down and
current source pull-up circuits on the SCLH output. Only
the current source of one master is enabled at any one
time and only during Hs-mode. Both lines must be
connected to a positive supply via a pull-up resistor.
Data transfer may be initiated only when the bus is not
busy.
10.1.2
One data bit is transferred during each clock pulse (see
Fig.21). The data on the SDAH line must remain stable
2003 feb 10
2
handbook, full pagewidth
C-bus master devices which have an open-drain SDAH
65 x 96 pixels matrix grey-scale LCD driver
2
2
C-BUS INTERFACE
C-bus Hs-mode is for bidirectional, two-line
Characteristics of the I
B
IT TRANSFER
SCL
SDA
TRANSMITTER/
RECEIVER
MASTER
SDA
SCL
2
C-bus (Hs-mode)
RECEIVER
SLAVE
Fig.20 System configuration.
data valid
data line
stable;
Fig.21 Bit transfer.
TRANSMITTER/
RECEIVER
SLAVE
19
allowed
change
of data
10.1.1
Definition (see Fig.20):
during the HIGH period of the clock pulse as changes in
the data line at this time will be interpreted as a control
signal.
Transmitter: the device that sends the data to the bus
Receiver: the device that receives the data from the bus
Master: the device that initiates a transfer, generates
clock signals and terminates a transfer
Slave: the device addressed by a master
Multi-master: more than one master can attempt to
control the bus at the same time without corrupting the
message
Arbitration: procedure to ensure that, if more than one
master simultaneously tries to control the bus, only one
is allowed to do so and the message is not corrupted
Synchronisation: procedure to synchronize the clock
signals of two or more devices.
S
YSTEM CONFIGURATION
TRANSMITTER
MASTER
MBC621
TRANSMITTER/
RECEIVER
MASTER
Product specification
MGA807
OM6208
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