19-1044; Rev 1; 3/09
KIT
ATION
EVALU
BLE
AVAILA
Fully Programmable Serializer/Deserializer
with UART/I
2
C Control Channel
General Description
The MAX9257 serializer pairs with the MAX9258 deseri-
alizer to form a complete digital video serial link. The
MAX9257/MAX9258 feature programmable parallel data
width, parallel clock frequency range, spread spectrum,
and preemphasis. An integrated control channel trans-
fers data bidirectionally at power-up during video blank-
ing over the same differential pair used for video data.
This feature eliminates the need for external CAN or LIN
interface for diagnostics or programming. The clock is
recovered from input serial data at MAX9258, hence
eliminating the need for an external reference clock.
The MAX9257 serializes 10, 12, 14, 16, and 18 bits with
the addition of two encoding bits for AC-coupling. The
MAX9258 deserializer links with the MAX9257 to deseri-
alize a maximum of 20 (data + encoding) bits per
pixel/parallel clock period for a maximum serial-data
rate of 840Mbps. The word length can be adjusted to
accommodate a higher pixel/parallel clock frequency.
The pixel clock can vary from 5MHz to 70MHz, depend-
ing on the serial-word length. Enabling parity adds two
parity bits to the serial word. The encoding bits reduce
ISI and allow AC-coupling.
The MAX9258 receives programming instructions from
the electronic control unit (ECU) during the control
channel and transmits to the MAX9257 over the serial
video link. The instructions can program or update the
MAX9257, MAX9258, or an external peripheral device,
such as a camera. The MAX9257 communicates with
the peripheral device with I
2
C or UART.
The MAX9257/MAX9258 operate from a +3.3V core
supply and feature separate supplies for interfacing to
+1.8V to +3.3V logic levels. These devices are avail-
able in 40-lead TQFN or 48-pin LQFP packages. These
devices are specified over the -40°C to +105°C temper-
ature range.
♦
♦
♦
♦
Features
♦
10/12/14/16/18-Bit Programmable Parallel Data
Width
MAX9258 Does Not Require Reference Clock
Parity Protection for Video and Control Channels
Programmable Spread Spectrum
Programmable Rising or Falling Edge for HSYNC,
VSYNC, and Clock
♦
Up to 10 Remotely Programmable GPIO on
MAX9257
♦
Automatic Resynchronization in Case of Loss of
Lock
♦
MAX9257 Parallel Clock Jitter Filter PLL with
Bypass
♦
DC-Balanced Coding Allows AC-Coupling
♦
5 Levels of Preemphasis for Up to 20m STP Cable
Drive
♦
Integrity Test Using On-Chip Programmable
PRBS Generator and Checker
♦
LVDS I/O Meet ISO 10605 ESD Protection (±10kV
Contact and ±30kV Air Discharge)
♦
LVDS I/O Meet IEC 61000-4-2 ESD Protection
(±8kV Contact and ±20kV Air Discharge)
♦
LVDS I/O Meet ±200V Machine Model ESD
Protection
♦
-40°C to +105°C Operating Temperature Range
♦
Space-Saving, 40-Pin TQFN (5mm x 5mm) with
Exposed Pad or 48-Pin LQFP Packages
♦
+3.3V Core Supply
MAX9257/MAX9258
Ordering Information
PART
MAX9257GTL/V+
MAX9257GCM/V+
MAX9258GCM/V+
TEMP RANGE
-40°C to +105°C
-40°C to +105°C
-40°C to +105°C
PIN-PACKAGE
40 TQFN-EP*
48 LQFP
48 LQFP
Applications
Automotive Cameras
Industrial Cameras
Navigation Systems Display
In-Vehicle Entertainment Systems
/V denotes an automotive qualified part.
+Denotes
a lead(Pb)-free/RoHS-compliant package.
*EP
= Exposed pad.
Typical Operating Circuit and Pin Configurations appear at
end of data sheet.
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Fully Programmable Serializer/Deserializer
with UART/I
2
C Control Channel
MAX9257/MAX9258
ABSOLUTE MAXIMUM RATINGS
V
CC
_ to GND .........................................................-0.5V to +4.0V
Any Ground to Any Ground...................................-0.5V to +0.5V
SDI+, SDI-, SDO+, SDO- to GND..........................-0.5V to +4.0V
SDO+, SDO- Short Circuit to GND or V
CCLVDS
.........Continuous
DIN[0:15], GPIO[0:9], PCLK_IN, HSYNC_IN, VSYNC_IN,
SCL/TX, SDA/RX, REM to GND ............-0.5V to (V
CCIO
+ 0.5V)
DOUT[0:15], PCLK_OUT, HSYNC_OUT, VSYNC_OUT, RX,
LOCK, TX,
PD, ERROR
to GND ........-0.5V to (V
CCOUT
+ 0.5V)
Continuous Power Dissipation (T
A
= +70°C)
40-Lead TQFN
Multilayer PCB (derate 35.7mW/°C above +70°C) .....2857mW
48-Lead LQFP
Multilayer PCB (derate 21.7mW/°C above +70°C) .....1739mW
Junction-to-Case Thermal Resistance (θ
JC
) (Note 1)
40-Lead TQFN .............................................................1.7°C/W
48-Lead LQFP ...............................................................10°C/W
Junction-to-Ambient Thermal Resistance (θ
JA
) (Note 1)
40-Lead TQFN ..............................................................28°C/W
48-Lead LQFP ...............................................................46°C/W
ESD Protection
Human Body Model (R
D
= 1.5kΩ, C
S
= 100pF)
All Pins to GND ..............................................................±3kV
IEC 61000-4-2 (R
D
= 330Ω, C
S
= 150pF)
Contact Discharge
(SDI+, SDI-, SDO+, SDO-) to GND................................±8kV
Air Discharge
(SDI+, SDI-, SDO+, SDO-) to GND..............................±20kV
ISO 10605 (R
D
= 2kΩ, C
S
= 330pF)
Contact Discharge
(SDI+, SDI-, SDO+, SDO-) to GND..............................±10kV
Air Discharge
(SDI+, SDI-, SDO+, SDO-) to GND..............................±30kV
Machine Model (R
D
= 0Ω, C
S
= 200pF)
All Pins to GND ............................................................±200V
Storage Temperature Range .............................-65°C to +150°C
Junction Temperature ......................................................+150°C
Lead Temperature (soldering, 10s) .................................+300°C
Note 1:
Package thermal resistances were obtained using the method described in JDEC specification JESD51-7, using a 4-layer
board. For detailed information on package thermal considerations, refer to
www.maxim-ic.com/thermal-tutorial.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
MAX9257 DC ELECTRICAL CHARACTERISTICS
(V
CC_
= +3.0V to +3.6V, R
L
= 50Ω ±1%, T
A
= -40°C to +105°C, unless otherwise noted. Typical values are at V
CC_
= +3.3V,
T
A
= +25°C.) (Notes 2, 3)
PARAMETER
SINGLE-ENDED INPUTS
V
CCIO
= +1.71V to +3V
High-Level Input Voltage
V
IH
V
CCIO
= +3V to +3.6V
REM input
V
CCIO
= +1.71V to +3V
Low-Level Input Voltage
V
IL
V
CCIO
= +3V to +3.6V
REM input
Input Current
Input Clamp Voltage
SINGLE-ENDED OUTPUTS
I
OH
= -100µA
High-Level Output Voltage
V
OH
I
OH
= -2mA
V
CCIO
-
0.1
V
V
CCIO
-
0.35
I
IN
V
CL
V
IN
= 0 to V
CCIO
V
CCIO
= +1.71V to +3.6V
V
IN
= 0 to V
CC,
REM input
I
CL
= -18mA
0.65 x
V
CCIO
2
2
0
0
0
-20
-20
V
CCIO
+
0.3
V
CCIO
+
0.3
V
CC
+
0.3
0.3 x
V
CCIO
0.8
0.8
+20
+20
-1.5
V
µA
V
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
V
2
_______________________________________________________________________________________
Fully Programmable Serializer/Deserializer
with UART/I
2
C Control Channel
MAX9257 DC ELECTRICAL CHARACTERISTICS (continued)
(V
CC_
= +3.0V to +3.6V, R
L
= 50Ω ±1%, T
A
= -40°C to +105°C, unless otherwise noted. Typical values are at V
CC_
= +3.3V,
T
A
= +25°C.) (Notes 2, 3)
PARAMETER
Low-Level Output Voltage
Output Short-Circuit Current
I
2
C/UART I/O
Input Leakage Current
High-Level Input Voltage SDA/RX
Low-Level Input Voltage SDA/RX
Low-Level Output Voltage
SCL, SDA
LVDS OUTPUTS (SDO+, SDO-)
Differential Output Voltage
Change in V
OD
Between
Complementary Output States
Common-Mode Voltage
Change in V
OS
Between
Complementary Output States
Output Short-Circuit Current
Magnitude of Differential Output
Short-Circuit Current
Differential Output Voltage
Input Hysteresis
(Figure 2)
V
OD
ΔV
OD
V
OS
ΔV
OS
I
OS
I
OSD
V
SDO+
or V
SDO-
= 0 or 3.6V
V
OD
= 0
-15
Preemphasis off
(Figure 1)
250
350
460
20
1.050
1.25
1.375
20
+15
15
mV
mV
V
mV
mA
mA
I
ILKG
V
IH2
V
IL2
V
OL2
R
PULLUP
= 1.6kΩ
V
I
= V
CC
-1
0.7 x
V
CC
0.3 x
V
CC
0.4
+1
µA
V
V
V
SYMBOL
V
OL
I
OS
I
OL
= 100µA
I
OL
= 2mA
Shorted to GND
Shorted to V
CC_
-44
10
CONDITIONS
MIN
TYP
MAX
0.1
0.3
-10
44
UNITS
V
mA
MAX9257/MAX9258
CONTROL CHANNEL TRANSCEIVER
V
OD
V
HYST+
V
HYST-
Differential low-to-high threshold
Differential high-to-low threshold
250
25
-25
350
90
-90
460
135
-135
mV
mV
_______________________________________________________________________________________
3
Fully Programmable Serializer/Deserializer
with UART/I
2
C Control Channel
MAX9257/MAX9258
MAX9257 DC ELECTRICAL CHARACTERISTICS (continued)
(V
CC_
= +3.0V to +3.6V, R
L
= 50Ω ±1%, T
A
= -40°C to +105°C, unless otherwise noted. Typical values are at V
CC_
= +3.3V,
T
A
= +25°C.) (Notes 2, 3)
PARAMETER
POWER SUPPLY
±2% spread, preemphasis off,
PRATE = 60MHz, SRATE = 840Mbps
No spread, preemphasis off,
PRATE = 60MHz, SRATE = 840Mbps
No spread, preemphasis = 20%,
PRATE = 60MHz, SRATE = 840Mbps
No spread, preemphasis = 60%,
PRATE = 60MHz, SRATE = 840Mbps
No spread, preemphasis = 100%,
PRATE = 60MHz, SRATE = 840Mbps
±2% spread, preemphasis off,
PRATE = 28.57MHz, SRATE = 400Mbps
No spread, preemphasis off,
PRATE = 28.57MHz, SRATE = 400Mbps
No spread, preemphasis = 100%,
PRATE = 28.57MHz, SRATE = 400Mbps
Worst-Case Supply Current
(Figure 3)
C
L
= 8pF, 12 bits
±2% spread, preemphasis off,
PRATE = 14.29MHz, SRATE = 200Mbps
No spread, preemphasis off,
PRATE = 14.29MHz, SRATE = 200Mbps
No spread, preemphasis = 100%,
PRATE = 14.29MHz, SRATE = 200Mbps
±2% spread, preemphasis off,
PRATE = 7.14MHz, SRATE = 100Mbps
No spread, preemphasis off,
PRATE = 7.14MHz, SRATE = 100Mbps
No spread, preemphasis = 100%,
PRATE = 7.14MHz, SRATE = 100Mbps
±2% spread, preemphasis off,
PRATE = 5MHz, SRATE = 70Mbps
No spread, preemphasis off,
PRATE = 5MHz, SRATE = 70Mbps
No spread, preemphasis = 100%,
PRATE = 5MHz, SRATE = 70Mbps
Sleep Mode Supply Current
I
CCS
Sleep mode
104
99
99
108
110
78
77
86
55
54
59
44
43
46
34
34
36
126
121
120
127
129
96
94
105
68
67
73
55
54
57
43
42
45
92
µA
mA
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
I
CCW
4
_______________________________________________________________________________________
Fully Programmable Serializer/Deserializer
with UART/I
2
C Control Channel
MAX9257 AC ELECTRICAL CHARACTERISTICS
(V
CC_
= +3.0V to +3.6V, R
L
= 50Ω ±1%, T
A
= -40°C to +105°C, unless otherwise noted. Typical values are at V
CC_
= +3.3V,
T
A
= +25°C.) (Notes 5, 9)
PARAMETER
PCLK_IN TIMING REQUIREMENTS
Clock Period
Clock Frequency
Clock Duty Cycle
Clock Transition Time
SWITCHING CHARACTERISTICS
LVDS Output Rise Time
LVDS Output Fall Time
Control Transceiver Transition
Time
Input Setup Time
Input Hold Time
t
R
t
F
t
R1A
, t
F1A
t
R2
, t
F2
t
R1B
, t
F1B
t
S
t
H
t
PSD1
Parallel-to-Serial Delay
t
PSD2
PLL Lock Time
Random Jitter
Deterministic Jitter
SCL/TX, SDA/RX
Rise Time
Fall Time
Pulse Width of Spike Suppressed
in SDA
t
RS
t
FS
0.3 x V
CC
to 0.7 x
V
CC
, C
L
= 30pF
95kbps to 400kbps
t
SPK
400kbps to 1000kbps
1000kbps to 4250kbps
DC to 10Mbps (bypass mode)
Data Setup Time
Data Hold Time
I
2
C TIMING (Note 8)
Maximum SCL Clock Frequency
Minimum SCL Clock Frequency
Start Condition Hold Time
f
SCL
f
SCL
t
HD:STA
(Figure 30)
0.6
4.25
95
MHz
kHz
µs
t
SETUP
t
HOLD
400kbps
4.25Mbps, C
L
= 10pF
400kbps
4.25Mbps, C
L
= 10pF
R
PULLUP
= 10kΩ
R
PULLUP
= 1.6kΩ
100
50
10
10
100
60
100
0
ns
ns
ns
400
60
40
ns
ns
t
LOCK
t
RJ
t
DJ
±4% spread
Combined FPLL and SPLL; PCLK_IN stable
420MHz LVDS output, spread off,
FPLL = bypassed
2
18
- 1 PRBS, SRATE = 840Mbps, 18 bits,
no spread
(Figure 5)
(Figure 5)
Spread off (Figure 6)
20% to 80% (Figure 16)
20% to 80% (Figure 4)
20% to 80% (Figure 4)
642
810
290
0
3
(4.55 x t
T) +
11
MAX9257/MAX9258
SYMBOL
t
T
f
CLK
DC
t
R
, t
F
1/t
T
CONDITIONS
MIN
14.28
5
35
TYP
MAX
200.00
70
UNITS
ns
MHz
%
ns
ps
ps
ps
ns
ns
t
HIGH
/t
T
or t
LOW
/t
T
(Figure 7)
50
65
4
315
315
970
1140
386
370
370
1390
1420
490
(36.55 x t
T) +
11
ns
32,768 x
t
T
12
142
ns
ps
(RMS)
ps (P-P)
0.7 x V
CC
to 0.3 x V
CC,
C
L
= 30pF
_______________________________________________________________________________________
5
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