MAX9273GTL+ Maxim Integrated, MAX9273GTL+ Datasheet - Page 26

• Manufacturer Part Number: MAX9273GTL+
• Description: Serializers & Deserializers - Serdes 1.5Gbps 22-bit Coax/STP serializer
• Manufacturer: Maxim Integrated
• Type: Serializerr

Specifications of MAX9273GTL+

• Rohs: yes
• Data Rate: 1.5 Gbit/s
• Input Type: CMOS/LVCMOS
• Output Type: CML
• Number Of Inputs: 22
• Number Of Outputs: 1
• Operating Supply Voltage: 1.7 V to 3.6 V
• Operating Temperature Range: - 40 C to + 105 C
• Package / Case: TQFN-40 EP
• Maximum Operating Temperature: + 105 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT

As shown in
packets going to or coming from the peripherals from
UART format to I
device removes the byte number count and adds or
receives the ACK between the data bytes of I
bit rate is the same as the UART bit rate.
The serializer/deserializer UART-to-I
interface with devices that do not require register address-
es, such as the MAX7324 GPIO expander. In this mode,
the I
directly reads/writes the subsequent data bytes
Change the communication method of the I
the I2CMETHOD bit. I2CMETHOD = 1 sets command-byte-
only mode, while I2CMETHOD = 0 sets normal mode where
the first byte in the data stream is the register address.
Figure 22. Format Conversion Between GMSL UART and I
Maxim Integrated
SERIALIZER/DESERIALIZER
SERIALIZER/DESERIALIZER
2
FC
FC
C master ignores the register address byte and
UART-TO-I
UART-TO-I
SYNC FRAME
SYNC FRAME
11
11
2
2
C CONVERSION OF WRITE PACKET (I2CMETHOD = 0)
C CONVERSION OF READ PACKET (I2CMETHOD = 0)
Figure
SERIALIZER/DESERIALIZER
SERIALIZER/DESERIALIZER
2
C format and vice versa. The remote
Interfacing Command-Byte-Only I
22, the remote-side device converts
DEVICE ID + WR
DEVICE ID + RD
11
11
PERIPHERAL
PERIPHERAL
: MASTER TO SLAVE
S
1
S
1
REGISTER ADDRESS
REGISTER ADDRESS
22-Bit GMSL Serializer with Coax or
Devices with UART
2
DEV ID
DEV ID
C conversion can
7
7
11
11
2
C master using
W
W
1
1
2
(Figure
1
A
1
A
C. The I
: SLAVE TO MASTER
REG ADDR
REG ADDR
NUMBER OF BYTES
NUMBER OF BYTES
8
8
2
23).
C with Register Address (I2CMETHOD = 0)
2
2
11
11
C
C
1
A
1
A
1
S
DEV ID
In bypass mode, the serializer/deserializer ignore UART
commands from the FC and the FC communicates with
the peripherals directly using its own defined UART pro-
tocol. The FC cannot access the serializer/deserializer
registers in this mode. Peripherals accessed through the
forward control channel using the UART interface need
to handle at least one PCLKIN period Q 10ns of jitter due
to the asynchronous sampling of the UART signal by
PCLKIN. Set MS = high to put the control channel into
bypass mode. For applications with the FC connected to
the deserializer, there is a 1ms wait time between setting
MS high and the bypass control channel being active.
There is no delay time when switching to bypass mode
when the FC is connected to the serializer. Do not send
a logic-low value longer than 100Fs to ensure proper
GPO functionality. Bypass mode accepts bit rates down
to 10kbps in either direction. See the
section for GPO functionality limitations. The control-
channel data pattern should not be held low longer than
100Fs if GPO control is used.
S: START
7
DATA 0
1
R
11
1
A
P: STOP
DATA 0
ACK FRAME
8
11
A: ACKNOWLEDGE
DATA 0
1
A
8
STP Cable Drive
DATA N
DATA N
1
A
11
8
DATA 0
11
1
A
P
1
DATA N
MAX9273
UART Bypass Mode
8
ACK FRAME
GPO/GPI Control
11
1
A P
1
DATA N
11
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