DS92LX1621 Datasheet, PDF (30/44 Pages) National Semiconductor (TI) – 10 - 50 MHz Channel Link III Serializer and Deserializer with Embedded Bi-Directional Control Channel

FIGURE 25. Serial Control Bus Connection
30123043
Resistor RID Ω
(±0.1%)
0
GND
2.0k
4.7k
8.2k
12.1k
39.0k
CAD Resistor Value - DS92LX1621 Ser
Address 7'b
Address 8'b 0 appended (WRITE)
7b' 101 1000 (h'58)
8b' 1011 0000 (h'B0)
7b' 101 1001 (h'59)
7b' 101 1010 (h'5A)
7b' 101 1011 (h'5B)
7b' 101 1100 (h'5C)
7b' 101 1110 (h'5E)
8b' 1011 0010 (h'B2)
8b' 1011 0100 (h'B4)
8b' 1011 0110 (h'B6)
8b' 1011 1000 (h'B8)
8b' 1011 1100 (h'BC)
Resistor RID Ω
(±0.1%)
0
GND
2.0k
4.7k
8.2k
12.1k
39.0k
CAD Resistor Value - DS92LX1622 Des
Address 7'b
Address 8'b 0 appended (WRITE)
7b' 110 0000 (h'60)
8b' 1100 0000 (h'C0)
7b' 110 0001 (h'61)
7b' 110 0010 (h'62)
7b' 110 0011 (h'63)
7b' 110 0100 (h'64)
7b' 110 0110 (h'66)
8b' 1100 0010 (h'C2)
8b' 1100 0100 (h'C4)
8b' 1101 0110 (h'C6)
8b' 1101 1000 (h'C8)
8b' 1100 1100 (h'CC)
CAMERA MODE OPERATION
In Camera mode, I²C transactions originate from the Master
controller at the Deserializer side. The I²C slave core in the
Deserializer will detect if a transaction is intended for the Se-
rializer or a slave at the Serializer. Commands are sent over
the bi-directional control channel to initiate the transactions.
The Serializer will receive the command and generate an I²C
transaction on its local I²C bus. At the same time, the Serial-
izer will capture the response on the I²C bus and return the
response on the forward channel link. The Deserializer pars-
es the response and passes the appropriate response to the
Deserializer I²C bus.
To configure the devices for camera mode operation, set the
Serializer M/S pin to LOW and the Deserializer M/S pin to
HIGH. Before initiating any I²C commands, the Deserializer
needs to be programmed with the target slave device ad-
dresses and Serializer device address. SER_DEV_ID Regis-
ter 0x07h sets the Serializer device address and
SLAVE_x_MATCH/SLAVE_x_INDEX
registers
0x08h~0x17h set the remote target slave addresses. In slave
mode the address register is compared with the address byte
sent by the I²C master. If the addresses are equal to any of
registers values, the I²C slave will acknowledge and hold the
bus to propagate the transaction to the target device other-
wise it returns no acknowledge.
DISPLAY MODE OPERATION
In Display mode, I²C transactions originate from the controller
attached to the Serializer. The I2C slave core in the Serializer
will detect if a transaction targets (local) registers within the
Serialier or the (remote) registers within the Deserializer or a
remote slave connected to the I²C master interface of the De-
serializer. Commands are sent over the forward channel link
to initiate the transactions. The Deserializer will receive the
command and generate an I²C transaction on its local I2C
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