MAX9240GTM+ Maxim Integrated, MAX9240GTM+ Datasheet - Page 33

• Manufacturer Part Number: MAX9240GTM+
• Description: Serializers & Deserializers - Serdes 28Bit GMSL Deserializer
• Manufacturer: Maxim Integrated

Specifications of MAX9240GTM+

• Rohs: yes

Figure 28. Format for I
Table 4. I
The deserializer supports I
peripheral on the remote side of the communication link
using SCL clock stretching. While multiple masters can
reside on either side of the communication link, arbitration
is not provided. The connected masters need to sup-
port SCL clock stretching. The remote-side I
range must be set according to the local-side I
Supported remote-side bit rates can be found in
Set the I2CMSTBT (register 0x0D) to set the remote I
rate. If using a bit rate different than 400kbps, local- and
remote-side I
by setting the SLV_SH register settings on both sides.
The deserializer supports I
up to two device addresses. Use address translation
to assign unique device addresses to peripherals with
limited I
translate from) are stored in registers 0x09 and 0x0B.
Destination addresses (address to translate to) are
stored in registers 0x0A and 0x0C.
Maxim Integrated
6.25MHz to 100MHz, 25-Bit GMSL Deserializer for
I
2
2
C Communication with Remote-Side Devices
C addresses. Source addresses (address to
20kbps > f > 50kbps
LOCAL BIT RATE
2
2
S = START BIT
P = STOP BIT
A = ACK
N = NACK
D_ = DATA BIT
C Bit-Rate Ranges
C setup and hold times should be adjusted
f > 50kbps
f < 20kbps
2
C Read
Coax or STP Cable With Line Fault Detect
REPEATED START
I
S
S
2
C Address Translation
2
2
C address translation for
C communication with a
1
1
0
0
0
0
ADDRESS = 0x80
ADDRESS = 0x81
0
0
2
REMOTE BIT-RATE RANGE
2
C bit-rate
C bit rate.
0
0
Table
0
0
2
C bit
Up to 400kbps
Up to 10kbps
Up to 1Mbps
0
0
4.
0 = WRITE
1 = READ
0
0
The deserializer supports broadcast commands to con-
trol multiple peripheral devices. Select an unused device
address to use as a broadcast device address. Program
the remote-side GMSL device to translate the broadcast
device address (source address stored in registers 0x09,
0x0B) to the peripheral device address (destination
address stored in registers 0x0A, 0x0C). Any commands
sent to the broadcast address are sent to all designated
peripherals, while commands sent to a peripheral’s unique
device address are sent to that particular device only.
GPO on the serializer follows GPI transitions on the
deserializer. This GPO/GPI function can be used to
transmit signals such as frame sync in a surround-view
camera system. The GPI-to-GPO delay is 0.35ms (max).
Keep the time between GPI transitions to a minimun
0.35ms. This includes transitions from the other dese-
rializer in coax-splitter mode. Bit D4 of register 0x0E in
the deserializer stores the GPI input state. GPO is low
after power-up. The FC can set GPO by writing to the
serializer SET_GPO register bit. Do not send a logic-low
value on the deserializer RX/SDA input (UART mode)
longer than 100Fs in either base or bypass mode to
ensure proper GPO /GPI functionality.
A
A
D7
0
D6
0
REGISTER ADDRESS = 0x00
REGISTER 0x00 READ DATA
D5
0
Control-Channel Broadcast Mode
D4
0
D3
0
D2
0
I2CMSTBT SETTING
D1
0
D0
Up to 110
0
MAX9240
GPO /GPI Control
Any
000
N
A
P
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