STSMIA832 STMicroelectronics, STSMIA832 Datasheet

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STSMIA832

Manufacturer Part Number
STSMIA832
Description
1.8v/2.8v High Speed Dual Differential Line Receivers, Standard Mobile Imaging Architecture Smia Decoder Deserializer
Manufacturer
STMicroelectronics
Datasheet

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Feature summary
Order codes
May 2006
STSMIA832TBR
standard mobile imaging architecture (SMIA) decoder deserializer
Part number
Sub-low voltage differential signaling inputs:
V
High signaling rate:
f
f
f
Very high speed strobe to clock:
tp
Operating voltage range:
V
V
Symmetrical output impedance (D1-D8, H-
SYNC, V-SYNC, CLK):
II
Low power dissipation (DISABLED: EN=Gnd):
I
SMIA specification compliant
CLASS 0 and CLASS 1,2 supported (config by
CLASS_SEL)
CMOS logic input threshold
(EN, SYNC_SEL, CLASS_SEL):
V
V
3.6V tolerant on inputs
(EN, SYNC_SEL, CLASS_SEL)
32 BIT synchronization codes (SOF, EOF,
SOL, EOL)
Leadfree µTFBGA package
(RoHS Restriction of hazardous substances)
IN
OUT
OUT
SOFF
OH
ID
DD
L
IL
IH
LH
(OPR) =1.65V to 1.95V
= 650 Mbps MAX (D+,D-,STRB+,STRB-)
= 0.3xV
= 100mV MIN. with R
I=I
= 0.7xVL; V
~tp
(OPR) = 2.65V to 3.6V
= 82 Mbps MAX (for each data line D1-D8)
= 82 MHz MAX (CLK)
= I
OL
HL
DD
=4mA (MIN) at V
=5.2ns (TYP) at V
L
+ I
; V
L
L
L
= 10 µA (Max)
Temperature
= 1.65V to 1.95V
-40 to 85 °C
= 1.65V to 1.95V
Range
1.8V/2.8V High speed dual differential line receivers,
T
DD
= 100 , C
DD
=2.65V;V
=2.8V; V
µTFBGA25 3x3mm (TAPE & REEL)
L
L
=1.8V
= 10pF
L
=1.8V
Rev. 2
Package
Description
The STSMIA832 receiver converts the subLVDS
clock/datastream (up to 650 Mbps throughput
bandwidth) back into parallel 8 bits of
CMOS/LVTTL. The device recognizes the SMIA
32 bit start of frame (SOF), end of frame (EOF),
start of line (SOL) and end of line (EOL)
sequences to generate the H-SYNC and V-SYNC
signals. Output LVTTL clock (up to 82 MHz) is
transmitted in parallel with data. Output data are
rising-edge strobes. This chipset is an ideal
means to link mobile camera modules to
Baseband processors. In order to minimize static
current consumption, it is possible to shut down
the device when the interface is not being used by
a power-down (EN) pin that reduces the
Maximum Current Consumption to 10 µA making
this device ideal for portable applications like
Mobile Phone and Portable Battery Equipment. A
configurable input (Class_Sel) is provided to
select different CLASS (0 or 1,2) mode inside the
SMIA STD specifications.
The STSMIA832 is offered in a µTFBGA package
to optimize PCB space. All inputs and outputs are
equipped with protection circuits against static
discharge, giving them ESD immunity from
transient excess voltage. The STSMIA832 is
characterized for operation over the commercial
temperature range -40°C to 85°C.
µTFBGA25
STSMIA832
3000 parts per reel
Packaging
www.st.com
1/23
23

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STSMIA832 Summary of contents

Page 1

... Mobile Phone and Portable Battery Equipment. A configurable input (Class_Sel) is provided to select different CLASS (0 or 1,2) mode inside the SMIA STD specifications. The STSMIA832 is offered in a µTFBGA package to optimize PCB space. All inputs and outputs are equipped with protection circuits against static discharge, giving them ESD immunity from transient excess voltage ...

Page 2

... Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3.2 Power down mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3.3 Power saving at the inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 3.4 Switching off digital blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 3.5 Disabling the outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 3.6 Load capacitance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 3.7 Board layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 3.8 Decoupling capacitors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 4 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 5 Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 6 Frame structure Timing diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 8 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 2/ STSMIA832 ...

Page 3

... STSMIA832 1 Schematic diagram Figure 1. Simplified application block diagram Figure 2. Block diagram Schematic diagram 3/23 ...

Page 4

... Differential strobe receiver inputs (Class_Sel = VL) Differential clock receiver inputs (Class_Sel = GND) Receivers enable input Clock output Horizontal sync output Vertical sync output Ground (Digital I/O reference) Ground (Analog subLVDS part) Core supply voltage Digital I/O supply voltage Select sync input Select CLASS input STSMIA832 ...

Page 5

... CLASS_SEL pin selection mode, Data/Clock signaling or Data/Strobe signaling modes are activated. D1-D8, CLK STSMIA832 output data and clock lines. Parallel 8 bits of CMOS/LVTTL data is output at a maximum data rate of 82Mbps per line. Output LVTTL clock is transmitted in parallel with the data at 82MHz Max. SYNC-SEL ...

Page 6

... CCP2 is based on signaling scheme called SubLVDS, which is current mode differential low voltage signaling method modified from the IEEE 1596.3 LVDS standard for reduced power consumption. STSMIA832 operates in a data/strobe signaling mode. The use of data-strobe coding together with SubLVDS enables the use of high data rates with low EMI ...

Page 7

... STSMIA832 . Figure 5. Data-Strobe signaling Data is sent byte-wise LSB first. The state of the data and strobe signals at the beginning of transmission are fixed i.e. the state of data is logic high and the state of strobe is logic low. The number of clock cycles between synchronization codes has to be even, both between SOL (or SOF) – ...

Page 8

... X = channel number 8/23 Synchronization Codes FFH 00H 00H X0H FFH 00H 00H X1H FFH 00H 00H X2H FFH 00H 00H X3H STSMIA832 Notes Line Start Code Line End Code Frame Start Code Frame End Code DMA Channel Identifier from Channel ...

Page 9

... EN pin. The maximum quiescent supply current gets reduced to I initiated by applying a low-level pulse to the EN input of STSMIA832 device. The device remains state, drawing minimal power, until EN goes High, at which point it returns to full operation. ...

Page 10

... A reduced external capacitance leads to reduced current consumption and also reduced rise time and fall time. The parallel output driving capacitance in STSMIA832 is 10pF and the rise time and fall times for the LVTTL parallel outputs are 2.2ns maximum. ...

Page 11

... STSMIA832 . Figure 9. STSMIA832 Load capacitance and rise and fall time of LVTTL parallel outputs 3.7 Board layout To obtain the maximum benefit from the noise and EMI reductions of subLVDS, attention should be paid to the layout of differential lines. Lines of a differential pair should always be adjacent to eliminate noise interference from other signals and take full advantage of the noise canceling of the differential signals ...

Page 12

... CLK SMIA disabled H Start of Frame L End of Frame See Detailed H Timing Diagram L D+, D- See Disabled Sync data in Detailed (D1-D8 will get L parallel Timing out data, including mode Diagram CLASS_SEL Data/Clock GND Data/Strobe Data/Strobe STSMIA832 FUNCTION Start of Line End of Line Sync Code ...

Page 13

... STSMIA832 4 Maximum ratings Table 5. Absolute maximum ratings Symbol V Main Supply Voltage DD V Secondary Supply Voltage L V SubLVDS Data Bus Input Voltage (D+, D SubLVDS Clock Bus Input Voltage (STRB+, STRB-) STRB V DC Input Voltage (SYNC_SEL, CLASS_SEL, EN Output Voltage (D1-D8, H-SYNC, V-SYNC, CLK) ...

Page 14

... 2.65V to 3. 1.65V to 1.95V 0.7xV 0.3xV -4mA +4mA OL Test Conditions V ( 1.65V to 1.95V, L 2. GND STSMIA832 Min. Typ. Max. 0.5 0.9 1.3 -25 +25 ±10 ±10 3.5 9.0 DD, 10 0.7xV 3. 0.3xV L ±10 ±10 1.25 0.30 Value T = 25°C A Min. Typ. Max. ...

Page 15

... STSMIA832 Table 9. Switching characteristics (R = 100 ± 1 noted. Typical values are referred to T Symbol Parameter Rise Time LVTTL Output Voltage t r (10% to 90%) Fall Time LVTTL Output Voltage t f (90% to 10%) Propagation Delay Time (STRB to t pLH V-SYNC, H-SYNC) Low to High Propagation Delay Time (STRB to ...

Page 16

... Frame structure. 6 Frame structure Figure 11. Frame structure in VGA case (allowed synchronization codes sequence) Figure 12. Bit order in synchronization codes and data, LSB first (example start of frame), image frame structure 1. LSB (bytewise Least Significant Bit first) 16/23 . STSMIA832 ...

Page 17

... STSMIA832 7 Timing diagram (unless otherwise specified T Figure 13. Disabled Sync Mode (SYNC_SEL = GND) (D1-D8 will transmit the input data DIN, including SYNC CODE) and CLASS_SEL = V 1. Note: DATA_IN and STROBE are the input signals, CLKH is an internal signal i.e internal extracted clock having half frequency respect to the external clock. All others are output signals. ...

Page 18

... Figure 14. Enabled sync mode (SYNC_SEL = VDD) (D1-D8 will transmit the input data DIN, excluding SYNC CODE) and CLASS_SEL = V 1. Note: DATA_IN and STROBE are the input signals, CLKH is an internal signal i.e internal extracted clock having half frequency respect to the external clock. All others are output signals. 18/23 L STSMIA832 ...

Page 19

... STSMIA832 8 Package mechanical data In order to meet environmental requirements, ST offers these devices in ECOPACK packages. These packages have a Lead-free second level interconnect. The category of second Level Interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label ...

Page 20

... Package mechanical data DIM. MIN 0.78 b 0. 20/23 TFBGA25 MECHANICAL DATA mm. TYP MAX. 1.1 1.16 0.25 0.86 0.30 0.35 3.0 3.1 2 3.0 3.1 2 0.5 0.25 STSMIA832 mils MIN. TYP. MAX. 39.4 43.3 30.7 9.8 11.8 114.2 118.1 122.0 78.8 114.2 118.1 122.0 78.8 19.7 9.8 7539979/A 45.7 9.8 33.9 13.8 ...

Page 21

... STSMIA832 Tape & Reel TFBGA25 MECHANICAL DATA DIM. MIN 12 3.9 P 7.9 mm. TYP MAX. MIN. 330 13.2 0.504 0.795 2.362 14.4 3.3 3.3 1.60 4.1 0.153 8.1 0.311 Package mechanical data inch TYP. MAX. 12.992 0.519 0.567 0.130 0.130 0.063 0.161 0.319 21/23 ...

Page 22

... Revision history 9 Revision history Table 10. Revision history Date Revision 13-Mar-2006 1 3-May-2006 2 22/23 Initial release. Mistake on table 3 - Output. STSMIA832 Changes ...

Page 23

... STSMIA832 Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...

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