19-5657; Rev 1; 1/11
Gigabit Multimedia Deserializer with Spread
Spectrum and Full-Duplex Control Channel
General Description
The MAX9270 deserializer uses Maxim’s gigabit
multimedia serial link (GMSL) technology. The device
functions the same as the MAX9260 deserializer without
an output enable (ENABLE) pin. Outputs are enabled
or disabled by a register bit. The deserializer pairs with
any GMSL serializer to form a complete digital serial link
for joint transmission of high-speed video, audio, and
control data.
The deserializer accepts a maximum serial payload
data rate of 2.5Gbps for a 15m shielded twisted-pair
(STP) cable. The 24-bit or 32-bit width parallel interface
operates up to a maximum bus clock of 104MHz or
78MHz, respectively. This serial link supports display
panels from QVGA (320 x 240) up to XGA (1280 x 768),
or dual-view WVGA (2 x 854 x 480).
The 24-bit or 32-bit mode handles 21 or 29 bits of data,
along with an I
2
S input, supporting 4- to 32-bit audio
word lengths and an 8kHz to 192kHz sample rate. The
embedded control channel forms a full-duplex, differen-
tial 100kbps to 1Mbps UART link between the serializer
and deserializer. The host electronic control unit (ECU)
or microcontroller (FC) resides either on the serializer (for
video display) or the deserializer (for image sensing). In
addition, the control channel enables ECU/FC control of
peripherals in the remote side of the serial link through
I
2
C (base mode) or a user-defined full-duplex UART
format (bypass mode).
The channel equalizer extends the link length and
enhances the link reliability. Spread spectrum is avail-
able to reduce EMI on the parallel output data signals.
The differential link complies with the ISO 10605 and IEC
61000-4-2 ESD-protection standards.
This device uses a 3.3V core supply and a 1.8V to 3.3V
I/O supply. The device is available in a 56-pin TQFN
package (8mm x 8mm x 0.75mm) with an exposed pad.
Electrical performance is guaranteed over the -40NC to
+105NC automotive temperature range.
S
Pairs with Any GMSL Serializer
S
2.5Gbps Payload Rate, AC-Coupled Serial Link
Features
with 8b/10b Line Coding
MAX9270
S
24-Bit or 32-Bit Programmable Parallel Output Bus
Supports Up to XGA (1280 x 768) or Dual-View
WVGA (2 x 854 x 480) Panels with 18-Bit or 24-Bit
Color
78MHz (32-Bit Bus) Parallel Data Rate
104MHz/78MHz Maximum Pixel Clock
S
8.33MHz to 104MHz (24-Bit Bus) or 6.25MHz to
S
Support Two/Three 10-Bit Camera Links at
S
4-Bit to 32-Bit Word Length, 8kHz to 192kHz I
2
S
Audio Channel Supports High-Definition Audio
Channel (100kbps to 1Mbps)
S
Embedded Half-/Full-Duplex Bidirectional Control
S
Separate Interrupt Signal Supports Touch-Screen
Functions for Display Panels
S
Remote-End I
2
C Master for Peripherals
S
Line Equalizer Extends Link Length
S
Programmable Spread Spectrum on the Parallel
Data Outputs Reduce EMI
S
Does Not Require an External Clock
S
Auto Data-Rate Detection Allows “On-The-Fly”
Data-Rate Change
S
Built-In PRBS Checker for BER Testing
S
ISO 10605 and IEC 61000-4-2 ESD Protection
S
-40NC to +105NC Operating Temperature Range
S
Patent Pending
Ordering Information
PART
MAX9270GTN/V+
TEMP RANGE
-40NC to +105NC
PIN-PACKAGE
56 TQFN-EP*
Applications
High-Speed Serial-Data Transmission for Display
High-Speed Serial-Data Transmission for Image
Sensing
Automotive Navigation, Infotainment, and Image-
Sensing Systems
/V denotes an automotive qualified part.
+Denotes
a lead(Pb)-free/RoHS-compliant package.
*EP
= Exposed pad.
T = Tape and reel.
Typical Applications Circuit appears 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.
Gigabit Multimedia Deserializer with Spread
Spectrum and Full-Duplex Control Channel
MAX9270
ABSOLUTE MAXIMUM RATINGS
AVDD to EP ..........................................................-0.5V to +3.9V
DVDD to EP ..........................................................-0.5V to +3.9V
IOVDD to EP .........................................................-0.5V to +3.9V
IN+, IN- to EP .......................................................-0.5V to +1.9V
All Other Pins to EP .............................. -0.5V to (IOVDD + 0.5V)
IN+, IN- Short Circuit to Ground or
Supply ....................................................................Continuous
Continuous Power Dissipation (T
A
= +70NC)
56-Pin TQFN (derate 47.6mW/NC above +70NC) ....3809.5mW
ESD Protection
Human Body Model (R
D
= 1.5kI, C
S
= 100pF)
(IN+, IN-) to EP .............................................................Q8kV
All Other Pins to EP ......................................................Q4kV
IEC 61000-4-2 (R
D
= 330I, C
S
= 150pF)
Contact Discharge
(IN+, IN-) to EP .............................................................Q8kV
Air Discharge
(IN+, IN-) to EP ...........................................................Q10kV
ISO 10605 (R
D
= 2kI, C
S
= 330pF)
Contact Discharge
(IN+, IN-) to EP ............................................................Q8kV
Air Discharge
(IN+, IN-) to EP ...........................................................Q20kV
Operating Temperature Range ........................ -40NC to +105NC
Junction Temperature .....................................................+150NC
Storage Temperature Range............................ -65NC to +150NC
Lead Temperature (soldering, 10s) ................................+300NC
Soldering Temperature (reflow) ......................................+260NC
PACKAGE THERMAL CHARACTERISTICS (Note 1)
56 TQFN
Junction-to-Ambient Thermal Resistance (Θ
JA
) ..........21NC/W
Junction-to-Case Thermal Resistance (Θ
JC
).................1NC/W
Note 1:
Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-
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.
DC ELECTRICAL CHARACTERISTICS
(V
DVDD
= V
AVDD
= 3.0V to 3.6V, V
IOVDD
= 1.7V to 3.6V, R
L
= 100I
Q1%
(differential), EP connected to PCB ground (GND),
T
A
= -40NC to +105NC, unless otherwise noted. Typical values are at V
DVDD
= V
AVDD
= V
IOVDD
= 3.3V, T
A
= +25NC.)
PARAMETER
SYMBOL
CONDITIONS
MIN
0.65 x
V
IOVDD
0.35 x
V
IOVDD
V
IN
= 0 to V
IOVDD
I
CL
= -18mA
-10
+10
-1.5
V
IOVDD
- 0.3
V
IOVDD
- 0.2
0.3
0.2
TYP
MAX
UNITS
SINGLE-ENDED INPUTS (ENABLE, INT,
PWDN,
SSEN, BWS, ES, DRS, MS, CDS, EQS, DCS)
High-Level Input Voltage
Low-Level Input Voltage
Input Current
Input Clamp Voltage
V
IH1
V
IL1
I
IN1
V
CL
V
V
FA
V
SINGLE-ENDED OUTPUTS (DOUT_, SD, WS, SCK, PCLKOUT)
V
DCS
= V
GND
High-Level Output Voltage
V
OH
I
OH
= -2mA
V
DCS
= V
IOVDD
Low-Level Output Voltage
V
OL1
I
OL
= 2mA
V
DCS
= V
GND
V
DCS
= V
IOVDD
V
V
2
______________________________________________________________________________________
Gigabit Multimedia Deserializer with Spread
Spectrum and Full-Duplex Control Channel
DC ELECTRICAL CHARACTERISTICS (continued)
(V
DVDD
= V
AVDD
= 3.0V to 3.6V, V
IOVDD
= 1.7V to 3.6V, R
L
= 100I
Q1%
(differential), EP connected to PCB ground (GND),
T
A
= -40NC to +105NC, unless otherwise noted. Typical values are at V
DVDD
= V
AVDD
= V
IOVDD
= 3.3V, T
A
= +25NC.)
PARAMETER
SYMBOL
CONDITIONS
V
O
= 0V,
V
DCS
= V
GND
DOUT_, SD,
WS, SCK
V
IOVDD
=
3.0V to 3.6V
V
IOVDD
=
1.7V to 1.9V
V
IOVDD
=
3.0V to 3.6V
MIN
15
3
20
5
15
5
30
9
TYP
25
7
35
10
33
10
54
16
MAX
39
13
63
21
mA
50
17
97
32
UNITS
MAX9270
Output Short-Circuit Current
I
OS
V
O
= 0V,
V
DCS
= V
IOVDD
V
IOVDD
=
1.7V to 1.9V
V
O
= 0V,
V
DCS
= V
GND
PCLKOUT
V
IOVDD
=
3.0V to 3.6V
V
IOVDD
=
1.7V to 1.9V
V
IOVDD
=
3.0V to 3.6V
V
O
= 0V,
V
DCS
= V
IOVDD
V
IOVDD
=
1.7V to 1.9V
I
2
C AND UART I/O, OPEN-DRAIN OUTPUTS (RX/SDA, TX/SCL,
ERR,
GPIO_, LOCK)
High-Level Input Voltage
Low-Level Input Voltage
Input Current
Low-Level Open-Drain Output
Voltage
Differential High Output Peak
Voltage, (V
IN
+) - (V
IN
-)
Differential Low Output Peak
Voltage, (V
IN
+) - (V
IN
-)
DIFFERENTIAL INPUTS (IN+, IN-)
Differential High Input Threshold
(Peak), (V
IN
+) - (V
IN
-)
Differential Low Input Threshold
(Peak), (V
IN
+) - (V
IN
-)
Input Common-Mode Voltage,
((V
IN
+) + (V
IN
-))/2
Differential Input Resistance
(Internal)
V
IDH(P)
V
IDL(P)
V
CMR
R
I
(Figure 2)
(Figure 2)
V
IH2
V
IL2
I
IN2
V
OL2
V
IN
= 0 to V
IOVDD
(Note 2)
I
OL
= 3mA
RX/SDA, TX/SCL
GPIO,
ERR,
LOCK
V
IOVDD
= 1.7V to 1.9V
V
IOVDD
= 3.0V to 3.6V
0.7 x
V
IOVDD
0.3 x
V
IOVDD
-110
-80
+1
+1
0.4
0.3
V
V
FA
V
V
DIFFERENTIAL OUTPUTS FOR REVERSE CONTROL CHANNEL (IN+, IN-)
V
ROH
V
ROL
No high-speed data transmission
(Figure 1)
No high-speed data transmission
(Figure 1)
30
-60
60
-30
mV
mV
40
-90
1
80
-40
1.3
100
90
mV
mV
1.6
130
V
I
_______________________________________________________________________________________
3
Gigabit Multimedia Deserializer with Spread
Spectrum and Full-Duplex Control Channel
MAX9270
DC ELECTRICAL CHARACTERISTICS (continued)
(V
DVDD
= V
AVDD
= 3.0V to 3.6V, V
IOVDD
= 1.7V to 3.6V, R
L
= 100I
Q1%
(differential), EP connected to PCB ground (GND),
T
A
= -40NC to +105NC, unless otherwise noted. Typical values are at V
DVDD
= V
AVDD
= V
IOVDD
= 3.3V, T
A
= +25NC.)
PARAMETER
POWER SUPPLY
V
BWS
= V
GND
,
f
PCLKOUT
= 16.6MHz
2% spread
spectrum active
Spread spectrum
disabled
2% spread
spectrum active
Spread spectrum
disabled
2% spread
spectrum active
Spread spectrum
disabled
2% spread
spectrum active
Spread spectrum
disabled
113
105
122
110
137
120
159
135
80
V
PWDN
= V
GND
19
166
155
181
165
mA
211
188
247
214
130
70
FA
FA
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
V
BWS
= V
GND
,
f
PCLKOUT
= 33.3MHz
Worst-Case Supply Current
(Figure 3)
I
WCS
V
BWS
= V
GND
,
f
PCLKOUT
= 66.6MHz
V
BWS
= V
GND
,
f
PCLKOUT
= 104MHz
Sleep-Mode Supply Current
Power-Down Supply Current
I
CCS
I
CCZ
AC ELECTRICAL CHARACTERISTICS
(V
DVDD
= V
AVDD
= 3.0V to 3.6V, V
IOVDD
= 1.7V to 3.6V, R
L
= 100I
Q1%
(differential), EP connected to PCB ground (GND),
T
A
= -40NC to +105NC, unless otherwise noted. Typical values are at V
DVDD
= V
AVDD
= V
IOVDD
= 3.3V, T
A
= +25NC.)
PARAMETER
SYMBOL
CONDITIONS
V
BWS
= V
GND
, V
DRS
= V
IOVDD
Clock Frequency
f
PCLKOUT
V
BWS
= V
GND
, V
DRS
= V
GND
V
BWS
= V
IOVDD
, V
DRS
= V
IOVDD
V
BWS
= V
IOVDD
, V
DRS
= V
GND
Clock Duty Cycle
Clock Jitter
I
2
C/UART PORT TIMING
Output Rise Time
Output Fall Time
Input Setup Time
Input Hold Time
t
R
t
F
t
SET
t
HOLD
30% to 70%, C
L
= 10pF to 100pF, 1kI
pullup to IOVDD
70% to 30%, C
L
= 10pF to 100pF, 1kI
pullup to IOVDD
I
2
C only (Figure 5)
I
2
C only (Figure 5)
20
20
100
0
150
150
ns
ns
ns
ns
DC
t
J
t
HIGH
/t
T
or t
LOW
/t
T
(Figure 4)
Period jitter, RMS, spread off, 3.125Gbps,
PRBS pattern, UI = 1/f
PCLKOUT
MIN
8.33
16.66
6.25
12.5
40
50
0.05
TYP
MAX
16.66
104
12.5
78
60
%
UI
MHz
UNITS
PARALLEL CLOCK OUTPUT (PCLKOUT)
4
______________________________________________________________________________________
Gigabit Multimedia Deserializer with Spread
Spectrum and Full-Duplex Control Channel
AC ELECTRICAL CHARACTERISTICS (continued)
(V
DVDD
= V
AVDD
= 3.0V to 3.6V, V
IOVDD
= 1.7V to 3.6V, R
L
= 100I
Q1%
(differential), EP connected to PCB ground (GND),
T
A
= -40NC to +105NC, unless otherwise noted. Typical values are at V
DVDD
= V
AVDD
= V
IOVDD
= 3.3V, T
A
= +25NC.)
PARAMETER
SWITCHING CHARACTERISTICS
20% to 80%,
V
IOVDD
= 1.7V to 1.9V
PCLKOUT Rise-and-Fall Time
t
R
, t
F
20% to 80%,
V
IOVDD
= 3.0V to 3.6V
V
DCS
= V
IOVDD
,
C
L
= 10pF
V
DCS
= V
GND
,
C
L
= 5pF
V
DCS
= V
IOVDD
,
C
L
= 10pF
V
DCS
= V
GND
,
C
L
= 5pF
V
DCS
= V
IOVDD
,
C
L
= 10pF
V
DCS
= V
GND
,
C
L
= 5pF
V
DCS
= V
IOVDD
,
C
L
= 10pF
V
DCS
= V
GND
,
C
L
= 5pF
0.4
0.5
0.25
0.3
0.5
0.6
0.3
0.4
2.2
2.8
ns
1.7
2.0
3.1
3.8
ns
2.2
2.4
2880
750
1500
1000
2500
180
180
400
400
Bits
Fs
Fs
ns
ns
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MAX9270
20% to 80%,
V
IOVDD
= 1.7V to 1.9V
Parallel Data Rise-and-Fall Time
(Figure 6)
t
R
, t
F
20% to 80%,
V
IOVDD
= 3.0V to 3.6V
Deserializer Delay
Lock Time
Power-Up Time
Reverse Control-Channel Output
Rise Time
Reverse Control-Channel Output
Fall Time
I
2
S OUTPUT TIMING
t
SD
t
LOCK
t
PU
t
R
t
F
Spread spectrum enabled (Figure 7)
Spread spectrum disabled (Figure 7)
Spread spectrum enabled (Figure 8)
Spread spectrum off (Figure 8)
(Figure 9)
No high-speed transmission (Figure 1)
No high-speed transmission (Figure 1)
WS Jitter
t
AJ-WS
t
WS
= 1/f
WS
, rising
(falling) edge to
f
WS
= 96kHz
falling (rising) edge
(Note 3)
f
WS
= 192kHz
f
WS
= 48kHz or
44.1kHz
0.4e - 3 0.5e - 3
x t
WS
x t
WS
0.8e - 3
x t
WS
1.6e - 3
x t
WS
1e - 3
x t
WS
2e - 3
x t
WS
ns
SCK Jitter
t
AJ-SCK
t
SCK
= 1/f
SCK
, ris-
ing edge to rising
edge
n
WS
= 16 bits,
f
WS
= 48kHz or 44.1kHz
n
WS
= 24 bits,
f
WS
= 96kHz
n
WS
= 32 bits,
f
WS
= 192kHz
13e - 3 16e - 3
x t
SCK
x t
SCK
39e - 3 48e - 3
x t
SCK
x t
SCK
0.1
x t
SCK
0.13
x t
SCK
ns
_______________________________________________________________________________________
5
51单片机
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
