Table of Contents
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Features
SpaceWire Router
Logical to Physical addressing translation
Priority Management
Header Deletion Capability
Eight Bidirectional SpaceWire links
Full duplex communication
Data rate from 2 up to 200 Mbit/s in each direction
Two External Interfaces
Dedicated Input and Output FIFOs
9-bit wide Interface
Configuration Port
Read/Write Accesses to internal registers
Accessible from both the spacewire links (8 channels) and the external interfaces
Remote Memory Access Protocol (RMAP) support
Time Code Interface
Master/Slave Capability
Error/Status Interface
Operating range
Voltages
3V to 3.6V
Temperature
- 55°C to +125°C
Maximum Power consumption
All spacewire links active at 200Mbit/s : 4W
Radiation Performance
Total dose tested successfully up to 300 Krad (Si)
No single event latchup below a LET of 80 MeV/mg/cm2
ESD better than 2000V
Quality Grades
QML-Q or V with SMD
Package: 196pins MQFPF
Mass: 12grams
AT7910E
SpW-10X SpaceWire Router
DATASHEET
7796G AERO 02/13
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Summary of Contents for Atmel AT7910E
- Page 1 AT7910E SpW-10X SpaceWire Router DATASHEET Features SpaceWire Router Logical to Physical addressing translation Priority Management Header Deletion Capability Eight Bidirectional SpaceWire links Full duplex communication Data rate from 2 up to 200 Mbit/s in each direction Two External Interfaces Dedicated Input and Output FIFOs...
- Page 2 Dundee (Scotland). It is manufactured using the SEU hardened cell library from Atmel MH1RT CMOS 0.35µm radiation hardened sea of gates technology. For any technical question relative to the functionality of the AT7910E please contact Atmel technical support at assp-applab.hotline@nto.atmel.com.
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Page 3: Table Of Contents
Embedded router ....................8 3. PLL Filter ................... 9 4. LVDS Interface ................. 10 AT7910E Limitation ..................10 AT7910E Compatibility with LVDS receiver Standards ........11 5. Package Information ................ 12 Package Outline ....................12 5.1.1 MQFPF 196 ..................12 Pin Description .................... -
Page 4: Functional Description
An external time-code interface comprising tick_in, tick_out and current tick count value Internal status/error registers accessible via the configuration port External status/error signals A block diagram of the routing switch is given in the following figure: Figure 1. SpaceWire Router Block Diagram AT7910E [DATASHEET] 7796G AERO 02/13... -
Page 5: Spacewire Ports
The AT7910E provides a routing capability between eight SpaceWire links according to the SpaceWire Standard ECSS- E-50-12A. In addition for use as a node interface, the AT7910E integrates other interfaces such as: External ports Configuration port Time-code interface Control/Status interface... -
Page 6: Routing Control Logic And Crossbar
The control and status registers in the SpaceWire router provide the means to control the operation of the router, set the router configuration and parameters or monitor the status of the device. The registers are accessed using RMAP command packets received by the configuration port. AT7910E [DATASHEET] 7796G AERO 02/13... -
Page 7: Typical Applications
SpaceWire interface or a mixed configuration of the two previous ones. Stand-alone router The AT7910E SpaceWire Router may be used as a stand-alone router with up to eight SpaceWire links connected to it. Configuration of the routing tables etc. may be done by sending SpaceWire packets containing configuration commands to the router. -
Page 8: Embedded Router
Figure 2-2. AT7910E as SpaceWire node interface Embedded router The SpaceWire Router device can also be used to provide a node with an embedded router. In this case the external ports are used to provide the local connections to the node and the SpaceWire ports are used to make connections to other ports in the network. -
Page 9: Pll Filter
PLL Filter The AT7910E uses an internal PLL to provide the base transmit clock signal for the SpaceWire interfaces. External components are required to implement the PLL loop filter and to provide a bias for the PLL VCO. Note that RVCO, C and C0 are all connected to a quiet common ground track. -
Page 10: Lvds Interface
LVDS Interface The AT7910E provides 8 SpaceWire link based on LVDS IOs that should comply with the EIA-644 standard requirements. The basic LVDS interface consists in a single differential link interconnected between a transmiter and a receiver. Such a link requires a termination resistor on the receiver side to allow high frequency transfer usage. The nominal resistor value for the termination resistor 100 ohms. -
Page 11: At7910E Compatibility With Lvds Receiver Standards
AT7910E Compatibility with LVDS receiver Standards The LVDS driver produces a differential voltage across a 100-Ω load in the range of 247mV to 550mV with a typical offset voltage of 1.2V relative to ground. The recommended voltage applied to the LVDS receiver is between ground and 2.4 V with a common mode range of 0.05V to 2.35V. -
Page 12: Package Information
Package Information Package Outline 5.1.1 MQFPF 196 Here is a presentation of the mechanical outline of the 196 pins Ceramic Quad Flat Pack (CQFP 196) package used for the AT7910E. Figure 5-1. MQFPF 196 package AT7910E [DATASHEET] 7796G AERO 02/13... - Page 13 VDDB EXTOUTEMPTY9 EXTINWRITE10 STATMUXOUT5 DOUT+2 SOUT-6 EXTOUTREAD9 VSSA STATMUXOUT6 DIN+3 SOUT+6 EXTINDATA9_0 VDDA STATMUXOUT7 DIN-3 DOUT-6 EXTINDATA9_1 VSSB VSSB SIN+3 DOUT+6 EXTINDATA9_2 VDDB SIN-3 DIN+7 EXTINDATA9_3 EXTTICKIN SOUT-3 DIN-7 EXTINDATA9_4 EXTTIMEIN0 SOUT+3 SIN+7 EXTINDATA9_5 EXTTIMEIN1 AT7910E [DATASHEET] 7796G AERO 02/13...
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Page 14: Pin Description
VCOBias Bias for the PLL VCO (Rvco) LoopFilter Internal PLL filter System Clock - Provides the reference clock for all the CMOS3V3 AT7910E modules except the SpaceWire interface receivers RST* Asynchronous active low system reset CMOS3V3 FEEDBDIV[2:0] PLL feedback divider configuration - Set the internal PLL... - Page 15 CMOS3V3 TESTIOEN Shall be tied to ground CMOS3V3 Notes: Groups of pins represent busses where the highest number is the MSB. O = Output; I = Input; I/O = Input/Output XXX* = active low signal AT7910E [DATASHEET] 7796G AERO 02/13...
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Page 16: Electrical Characteristics
Operation Mode Power consumption [W] ICCSB - Standby ICCOP - SpaceWire links On Notes: Dynamic power with all interfaces active including external ports. Clock Frequency @ 3.12MHz, all SpW links active @3.12Mbps, no data transfert. AT7910E [DATASHEET] 7796G AERO 02/13... -
Page 17: Ac Electrical Characteristics
AC Electrical Characteristics The following table gives the worst case timings measured by Atmel on the 3.0V to 3.6V operating range Table 5-5. 3.3V operating range timings Parameter Symbol Min. Max. Unit Propagation delay CLK Low to DOUT0 High Propagation delay CLK Low to DOUT1 High... - Page 18 PLL . Then, the timing figures are not applicable under application conditions. For guaranteed timings refer to the “Switching Characteristics” section of the ‘SpW-10X SpaceWire Router User Manual’. AT7910E [DATASHEET] 7796G AERO 02/13...
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Page 19: Ordering Information
AT7910EKB-E MQFPF196 25°C Engineering sample 5962-09A0301QXC MQFPF196 -55°C to +125°C QML_Q 5962-09A0301VXC MQFPF196 -55°C to +125°C QML_V 5962R09A0301VXC MQFPF196 -55°C to +125°C QMLV-RHA (*) according to Atmel Quality flow document 4288, see Atmel web site AT7910E [DATASHEET] 7796G AERO 02/13... -
Page 20: Revision History
Corrected ICCop Value.See Table 7-3 on page 14 07-2009 Removing untested ICCop Value.See Table 7-3 on page 14 07-2009 SMD Part numbers added. 08-2009 Remove Atmel Part numbers. 02-2013 Template update Addition of VOS min/max Addition of VOD min/max AT7910E [DATASHEET]... - Page 21 Other terms and product names may be trademarks of others. Disclaimer: The information in this document is provided in connection with Atmel products. No license, express or implied, by estoppel or otherwise, to any intellectual property right is granted by this document or in connection with the sale of Atmel products.
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