Texas Instruments DLP LightCrafter Dual DLPC900 Manual

DLPC900 Programmer's Guide
Programmer’s Guide
Literature Number: DLPU018G
OCTOBER 2014 – REVISED APRIL 2022

Read This First...........................................................................................................................................................................9
About This Manual................................................................................................................................................................... 9
Related Documents from Texas Instruments........................................................................................................................... 9
If You Need Assistance............................................................................................................................................................ 9
1 Interface Protocol..................................................................................................................................................................11
1.1 I2C Interface..................................................................................................................................................................... 11
1.1.1 I2C Transaction Structure...........................................................................................................................................11
1.1.1.1 I2C START Condition...........................................................................................................................................11
1.1.1.2 I2C STOP Condition............................................................................................................................................ 11
1.1.1.3 DLPC900 I2C Secondary Controller Address .....................................................................................................11
1.1.1.4 DLPC900 I2C Sub-Address and Data Bytes.......................................................................................................12
1.1.2 Example I2C Read Command Sequence.................................................................................................................. 12
1.1.2.1 I2C Read Command Example with Parameters..................................................................................................13
1.1.3 Example I2C Write Command Sequence.................................................................................................................. 13
1.2 USB Interface...................................................................................................................................................................14
1.2.1 USB Transaction Sequence...................................................................................................................................... 14
1.2.2 USB Read Transaction Sequence Example..............................................................................................................16
1.2.3 USB Write Transaction Sequence Example.............................................................................................................. 17
1.3 INIT_DONE Signal........................................................................................................................................................... 17
2 DLPC900 Control Commands..............................................................................................................................................19
2.1 DLPC900 Status Commands........................................................................................................................................... 19
2.1.1 Hardware Status........................................................................................................................................................20
2.1.2 System Status........................................................................................................................................................... 21
2.1.3 Main Status................................................................................................................................................................21
2.1.4 Retrieve Firmware Version........................................................................................................................................ 22
2.1.5 Reading Hardware Configuration and Firmware Tag Information............................................................................. 22
2.1.6 Read Error Code....................................................................................................................................................... 23
2.1.7 Read Error Description.............................................................................................................................................. 23
2.2 DLPC900 Firmware Programming Commands................................................................................................................24
2.2.1 Read Status...............................................................................................................................................................24
2.2.2 Enter Program Mode................................................................................................................................................. 27
2.2.3 Exit Program Mode....................................................................................................................................................27
2.2.4 Read Control............................................................................................................................................................. 28
2.2.5 Start Address.............................................................................................................................................................28
2.2.6 Erase Sector..............................................................................................................................................................29
2.2.7 Download Flash Data Size........................................................................................................................................ 29
2.2.8 Download Data.......................................................................................................................................................... 29
2.2.9 Calculate Checksum..................................................................................................................................................30
2.2.10 Controller Enable/Disable Command...................................................................................................................... 30
2.3 Chipset Control Commands............................................................................................................................................. 31
2.3.1 Chipset Configuration Commands.............................................................................................................................31
2.3.1.1 Power Mode........................................................................................................................................................31
2.3.1.2 DMD Park/Unpark...............................................................................................................................................33
2.3.1.3 Curtain Color.......................................................................................................................................................33
2.3.2 Parallel Interface Configuration................................................................................................................................. 34
2.3.2.1 Parallel Port Configuration.................................................................................................................................. 34
2.3.2.2 Input Data Channel Swap................................................................................................................................... 35
2.3.3 Input Source Commands...........................................................................................................................................35
2.3.3.1 Port and Clock Configuration.............................................................................................................................. 35
2.3.3.2 Input Source Configuration................................................................................................................................. 36
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2.3.3.3 Input Pixel Data Format...................................................................................................................................... 37
2.3.3.4 Internal Test Pattern Select.................................................................................................................................37
2.3.3.5 Internal Test Patterns Color................................................................................................................................ 38
2.3.3.6 Load Image......................................................................................................................................................... 39
2.3.4 Image Flip..................................................................................................................................................................39
2.3.4.1 Long-Axis Image Flip.......................................................................................................................................... 39
2.3.4.2 Short Axis Image Flip..........................................................................................................................................40
2.3.5 IT6535 Power Mode.................................................................................................................................................. 40
2.3.6 Gamma Configuration and Enable............................................................................................................................ 41
2.3.7 LED Driver Commands..............................................................................................................................................43
2.3.7.1 LED Enable Outputs........................................................................................................................................... 43
2.3.7.2 LED Driver Current............................................................................................................................................. 45
2.3.7.3 Minimum LED Pulse Width in microseconds (µs)............................................................................................... 46
2.3.7.4 Minimum LED Pulse Width in nanoseconds (ns)................................................................................................46
2.3.7.5 Get Minimum LED Pattern Exposure in microseconds (µs)................................................................................46
2.3.7.6 Get Minimum LED Pattern Exposure in nanoseconds (ns)................................................................................ 46
2.3.8 GPIO Commands...................................................................................................................................................... 48
2.3.8.1 GPIO Configuration.............................................................................................................................................48
2.3.8.2 GPIO Clock Configuration...................................................................................................................................49
2.3.8.3 GPIO Busy.......................................................................................................................................................... 49
2.3.9 Pulse Width Modulated (PWM) Control.....................................................................................................................49
2.3.9.1 PWM Setup.........................................................................................................................................................50
2.3.9.2 PWM Enable....................................................................................................................................................... 50
2.3.10 Batch File Commands............................................................................................................................................. 51
2.3.10.1 Batch File Name............................................................................................................................................... 51
2.3.10.2 Batch File Execute............................................................................................................................................ 51
2.3.10.3 Batch File Delay................................................................................................................................................51
2.3.10.4 Batch File Example........................................................................................................................................... 52
2.4 Display Mode Commands................................................................................................................................................ 52
2.4.1 Display Mode Selection............................................................................................................................................. 57
2.4.1.1 Video Mode Resolution.......................................................................................................................................58
2.4.1.2 Input Display Resolution..................................................................................................................................... 58
2.4.1.3 DMD Block Load................................................................................................................................................. 58
2.4.1.4 Minimum Exposure Times...................................................................................................................................59
2.4.1.5 DMD Idle Mode................................................................................................................................................... 60
2.4.2 Image Header............................................................................................................................................................61
2.4.3 Pattern Image Compression......................................................................................................................................61
2.4.3.1 Run-Length Encoding......................................................................................................................................... 61
2.4.3.2 Enhanced Run-Length Encoding........................................................................................................................ 62
2.4.4 Pattern Display Commands.......................................................................................................................................63
2.4.4.1 Trigger Commands............................................................................................................................................. 63
2.4.4.2 LED Enable Delay Commands........................................................................................................................... 66
2.4.4.3 Pattern Display Commands................................................................................................................................ 68
2.4.4.4 Pattern On-The-Fly Commands..........................................................................................................................73
2.4.4.5 I2C Pass Through Commands............................................................................................................................ 76
3 DLPC900 Fault Status...........................................................................................................................................................79
3.1 DLPC900 FAULT_STATUS Location(s)........................................................................................................................... 79
3.2 DLPC900 FAULT_STATUS Interpretation........................................................................................................................79
4 Power-Up and Power-Down and Initialization Considerations.........................................................................................81
4.1 Power-Up......................................................................................................................................................................... 81
4.2 Power-Down.....................................................................................................................................................................81
4.3 Power-Up Auto-Initialization.............................................................................................................................................81
5 Command Examples............................................................................................................................................................ 83
5.1 Video Pattern Mode Example...........................................................................................................................................83
5.2 Pre-Stored Pattern Mode Example.................................................................................................................................. 83
5.3 Pattern On-The-Fly Example........................................................................................................................................... 85
5.4 I2C Pass Through Write Example.................................................................................................................................... 85
5.5 I2C Pass Through Read Example.................................................................................................................................... 85
A Register Quick Reference................................................................................................................................................... 87
A.1 I2C Register Quick Reference..........................................................................................................................................87
A.2 Command Guide..............................................................................................................................................................89
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B Batch File Command Descriptors.......................................................................................................................................91
B.1 Command Descriptors..................................................................................................................................................... 91
C Revision History...................................................................................................................................................................93
List of Figures
Figure 1-1. I2C Read Command Waveform Diagram................................................................................................................ 12
Figure 1-2. I2C Read Data Waveform Diagram......................................................................................................................... 13
Figure 1-3. I2C Write Command Waveform Diagram.................................................................................................................13
Figure 1-4. USB HID Protocol....................................................................................................................................................14
Figure 1-5. USB Multi-Transfer Transaction.............................................................................................................................. 15
Figure 2-1. Image Long-Axis Flip Example................................................................................................................................40
Figure 2-2. Image Short-Axis Flip Example............................................................................................................................... 40
Figure 2-3. Gamma Chart..........................................................................................................................................................42
Figure 2-4. DLPC900 Single Controller System Block Diagram................................................................................................54
Figure 2-5. DLPC900 Dual Controller System Block Diagram.................................................................................................. 55
Figure 2-6. Bit-Planes of a 24-Bit RGB Image...........................................................................................................................56
Figure 2-7. Bit Partition in a Frame for an 8-Bit Monochrome Image........................................................................................ 56
Figure 2-8. Video Pattern Mode Timing Diagram Example....................................................................................................... 64
Figure 2-9. Pre-Stored Pattern Mode Timing Diagram Example............................................................................................... 64
Figure 3-1. DLPC900 FAULT_STATUS Format.........................................................................................................................79
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Trademarks
LightCrafter™ and E2E™ are trademarks of Texas Instruments.
DLP® is a registered trademark of Texas Instruments.
All trademarks are the property of their respective owners.
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About This Manual
This document specifies the command and control interface to the DLPC900 controller and defines all applicable
commands, default settings, and control register bit definitions.
Related Documents from Texas Instruments
• DLPC900 Data Sheet, DLPS037
• DLP500YX Data Sheet, DLPS193
• DLP6500FLQ Data Sheet, DLPS040
• DLP6500FYE Data Sheet, DLPS053
• DLP670S Data Sheet, DLPS194
• DLP9000 Data Sheet, DLPS036
• DLP® LightCrafter™ Single DLPC900 Controller Evaluation Module (EVM) User's Guide, DLPU101
• DLP® LightCrafter™ Dual DLPC900 Controller Evaluation Module (EVM) User's Guide, DLPU102
If You Need Assistance
Visit the TI E2E™ support forums at DLP Products and MEMS TI E2E Community.
Preface
Read This First
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This chapter describes the interface protocol between the DLPC900 and a host processor. The DLPC900
supports two host interface protocols: I2C and USB 1.1 interfaces.
1.1 I2C Interface
The DLPC900 controller uses the I2C protocol to exchange commands and data with a host processor. The
I2C protocol is a two-wire serial data bus. One wire, SCL, serves as a serial clock, while the second wire,
SDA, serves as serial data. Several different devices can be connected together in an I2C bus. Each device is
software addressable by a unique address. Communication between devices occurs in a simple I2C "primary-to-
secondary" relationship.
1.1.1 I2C Transaction Structure
All I2C transactions are composed of a number of bytes, combined in the following order:
START Condition, 7-Bit Secondary Address Byte + 1 R/W Bit, Sub-Address Byte, N-Data Bytes, STOP
Condition
Where N in N-Data Bytes varies based on the sub-address.
1.1.1.1 I2C START Condition
All I2C transactions begin with a START condition. A START condition is defined by a high-to-low transition on
the SDA line, followed by a high-to-low transition on the SCL line.
1.1.1.2 I2C STOP Condition
All I2C transactions end with a STOP condition. A STOP condition is defined by a low-to-high transition on the
SDA line, followed by a low-to-high transition on the SCL line.
1.1.1.3 DLPC900 I2C Secondary Controller Address
The DLPC900 offers a programmable Secondary controller address. Refer to the App Defaults Settings found
in the DLPC900 LightCrafter GUI Firmware tab to set a different Secondary controller address. The default I2C
settings are shown in Table 1-1. The Write Secondary Address must be an even 7-bit address, and the Read
Secondary Address must be the Write Secondary Address plus 1.
Table 1-1. I2C Secondary Controller Settings
ADDRESSING
MODE DEFAULT WRITE ADDRESS DEFAULT READ ADDRESS MAXIMUM CLOCK RATE (kHz)
7-bit 0x34 0x35 400
Chapter 1
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1.1.1.4 DLPC900 I2C Sub-Address and Data Bytes
The DLPC900 I2C sub-address corresponds to the byte address of the DLPC900 commands described in
Appendix A. Most I2C sub-addresses have a Read and Write command pair where the Write command equals
the Read command with the most significant bit set. For example, Table 1-2 and Table 1-4 show the Input
Data Channel Swap sub-address command pair is (0x04,0x84), where the Write sub-address command 0x84 is
the Read sub-address command 0x04 with the most significant bit set. Each sub-address command requires a
certain number of data bytes, and each command is followed by variable length data where the least significant
byte is first for each parameter.
Note
The DLPC900 I2C command data is formatted with the least significant byte first for each parameter in
the data maintaining the same format as the USB protocol.
The DLPC900 internal command buffer has a maximum of 512 bytes and it is shared between the Read and
Write commands; therefore, whenever a Read command is executed it must be followed by I2C operation
with the Read Secondary Address to retrieve the data otherwise the data is overwritten by the next command
executed. See Section 1.1.2 for a Read command example.
1.1.2 Example I2C Read Command Sequence
To execute a command to read the Input Data Channel Swap setting, the host builds a sequence of bytes
containing the Secondary address, the sub-address, and the data (if any), and performs the following steps:
1. The host performs the required START condition followed by sending the sequence of bytes.
2. The DLPC900 holds the SCL line low to indicate it is busy.
3. The host waits for the DLPC900 to release the SCL line.
4. Once the SCL line goes high, the host performs a STOP condition.
5. The host then performs a START condition followed by sending the Read Secondary Address (0x35), and
then reads the required number of bytes and concludes with a STOP condition.
An example of the above read command sequence is shown in Table 1-2, and a waveform diagram of a host
executing this read sequence is shown in Figure 1-1 and Figure 1-2.
Table 1-2. Read Command Sequence Example(1)
SECONDARY
ADDRESS SUB-ADDRESS DATA
34 04
35 03
(1) All values shown are in HEX notation.
SDA
SCL
0x34 0x04
START Secondary Write Address Sub-addressACK ACK SCL held low by
DLPC900
STOP
Figure 1-1. I2C Read Command Waveform Diagram
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SDA
SCL
0x35 0x03
START Secondary Read Address DataACK ACK STOP
Figure 1-2. I2C Read Data Waveform Diagram
1.1.2.1 I2C Read Command Example with Parameters
Some Read sub-address commands require a parameter(s) to be included in the sequence. For example, the
command in Section 2.3.8.1 has multiple GPIO to choose from. Therefore, the GPIO selection parameter must
be included in the Read byte sequence in order to retrieve the configuration for the GPIO chosen. Table 1-3
shows the two I2C operations, where the first row contains the parameter data 06 which indicates GPIO 6. The
second row is the returned data of 06 03, where 06 was the chosen GPIO 6 and has a configuration of 03.
Table 1-3. Read Command with Parameter Sequence Example (1)
SECONDARY
ADDRESS SUB-ADDRESS DATA
34 44 06
35 06 03
(1) All values shown are in HEX notation.
1.1.3 Example I2C Write Command Sequence
To execute a command to set the Input Data Channel Swap value, the host builds a sequence of bytes
containing the Secondary address, the sub-address, and the data, and performs the following steps.
1. The host performs the required START condition followed by sending the sequence of bytes.
2. The host performs a STOP condition.
An example of the above write command sequence is shown in Table 1-4, and a waveform diagram of a host
executing this write sequence is shown in Figure 1-3.
Table 1-4. Write Command Sequence Example(1)
SECONDARY
ADDRESS SUB-ADDRESS DATA
34 84 02
(1) All values shown are in HEX notation.
SDA
SCL
0x34 0x84
START Secondary Write Address Sub-addressACK ACK STOP
0x02
Data ACK
Figure 1-3. I2C Write Command Waveform Diagram
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1.2 USB Interface
The DLPC900 controller also supports the USB 1.1 human interface device (HID) to exchange commands and
data with a host processor. The USB commands are variable length data packets that are sent with the least
significant byte first for each parameter.
1.2.1 USB Transaction Sequence
The USB 1.1 HID protocol has the structure shown in Figure 1-4. The host must build a stream of bytes that
consist of the Report ID, Header, and the payload. The following is a description of these three parts.
Report ID: The Report ID is always set to 0 and always the leading byte of all transfers.
Header: The header consists of four bytes.
1) Flag Byte: Shown in Figure 1-4 and described in the Read and Write examples in Section 1.2.2 and Section
1.2.3.
2) Sequence Byte: The sequence byte can be a rolling counter and is used primarily when the host wants a
response from the DLPC900. The DLPC900 responds with the same sequence byte that the host sent. The
host can then match the sequence byte from the command it sent with the sequence byte from the DLPC900
response.
3) Length: Two bytes in length, this denotes the number of data bytes in the Payload only.
Payload Bytes: The payload bytes consist of the USB command followed by the data that is associated with the
command.
Header Bytes
Report ID = 0 Flag Byte Sequence Byte Length LSB
Payload Bytes
USB Command
LSB MSB Data...
R/W Reply Error Reserved Destination
Byte 0 Byte 1 Byte 2 Byte 3 Byte 4 Bytes 5 ...N
USB Transaction Sequence
Bit 7 Bit 6 Bit 5 Bit 4:3 Bit 2:0
Length MSB
Figure 1-4. USB HID Protocol
During a Write operation, the host transmits the entire transaction sequence to the DLPC900, and the DLPC900
performs the operation associated with the Write command. During a Read operation, the host transmits the
entire transaction sequence to the DLPC900, and the DLPC900 performs the operation associated with the
Read command. Therefore, both Write and Read transactions are considered writes to the DLPC900 where the
host performs an API level Writefile to the HID driver. The difference is when the DLPC900 executes a Read
operation, where the DLPC900 places the response into its internal buffer and waits for the host to perform an
API level Readfile to the HID driver and only then does the DLPC900 transmit the response data back to the
host.
The DLPC900 internal command buffer has a maximum of 512 bytes and it is shared between both the Write
and Read operations; therefore, whenever the host performs a Read operation, it must be followed by the
Readfile to the HID driver to get the response otherwise the response data is overwritten by the next Write or
Read operation.
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The HID protocol is limited to 64 byte transfers in both directions. Therefore, commands that are larger than
64 bytes require multiple transfers. Whenever such a command is used, only the very first transfer requires the
Header and the USB Command. The Report ID is always the leading byte of all transfers. Figure 1-5 shows
an example of a Write command that contains 76 bytes and requires two transfers. Notice that the first transfer
contains 65 bytes, which is correct. The host hardware level HID driver extracts the Report ID before transmitting
or receiving the data over the USB bus.
Header Bytes
Report ID = 0 0x00 0x17 0x4C
Payload Bytes
USB Command
0x12 0x20 0x12 0x83 ««««...
Byte 0 Byte 1 Byte 2 Byte 3 Byte 4 Bytes 5 - 64
Multiple USB Transaction Transfers
0x00
Payload Bytes
0x45 0xAE 0xF7 «««««««..0x3B 0x1D 0xC5
Bytes 66 - 83
Report ID = 0
Byte 65
First transfer
Second transfer
Figure 1-5. USB Multi-Transfer Transaction
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1.2.2 USB Read Transaction Sequence Example
To perform a Read operation on the DLPC900, the host must assemble a sequence of bytes that corresponds to
the command being used. The following Table 1-5 shows an example on how to read the curtain color intensity
of each color.
Table 1-5. Read Operation Example (1)
REPORT ID
BYTE
FLAG
BYTE
SEQUENCE
BYTE LENGTH (2) USB COMMAND (2)
00 C0 11 02 00 00 11
(1) All values shown are in HEX notation.
(2) LSB precedes the MSB for each parameter.
1. Report ID byte: Always set to 0.
2. Flag byte. Where:
• Bits 2:0 are set to 0x0 for regular DLPC900 operation.
• Bit 6 is set to 0x1 to indicate the host wants a reply from the device.
• Bit 7 is set to 0x1 to indicate a read transaction.
3. Sequence byte: The sequence byte can be a rolling counter and is used primarily when the host wants a
response from the DLPC900. The DLPC900 responds with the same sequence byte that the host sent. The
host can then match the sequence byte from the command it sent with the sequence byte from the DLPC900
response.
4. Length: Two bytes in length, denotes the number of data bytes in the sequence but excludes the number of
bytes in steps 1 through 4. The length denotes the total number of bytes sent in step 5 (command bytes).
5. USB Command: Two byte USB command.
6. Once the host transmits the data over the USB interface, the DLPC900 responds to the Read operation by
placing the response data in its internal buffer. The host must then perform a HID driver read operation.
Table 1-6 shows the response data sent back from the DLPC900.
a. Report ID: Always set to 0.
b. Flag byte: The same as was sent plus error bit. The host may check the error flag (bit 5) as follows.
i. 0 = No errors.
ii. 1 = Command not found or command failed.
c. Sequence byte: The same as was sent. The host may match the sent sequence byte with the response
sequence byte.
d. Length: Number of data bytes. The host must assemble the data according to the definition of the
command.
Table 1-6. Read Response Example (1)
REPORT ID
BYTE
FLAG
BYTE
SEQUENCE
BYTE LENGTH (2) DATA (2)
00 C0 11 06 00 FF 01 FF 01 FF 01
(1) All values shown are in HEX notation.
(2) LSB precedes the MSB for each parameter.
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1.2.3 USB Write Transaction Sequence Example
To perform a Write operation on the DLPC900, the host must assemble a sequence of bytes that corresponds to
the command being used. The following Table 1-7 shows an example on how to set the curtain color intensity of
each color to 511.
Table 1-7. Write Operation Example (1)
REPORT ID
BYTE
FLAG
BYTE
SEQUENCE
BYTE LENGTH (2) USB COMMAND (2) DATA (2)
00 00 12 08 00 00 11 FF 01 FF 01 FF 01
(1) All values shown are in HEX notation.
(2) LSB precedes the MSB for each parameter.
1. Report ID byte: Always set to 0.
2. Flag byte. Where:
• Bits 2:0 are set to 0x0 for regular DLPC900 operation.
• Bit 6 is set to 0x0 to indicate the host does not want a reply from the device. This bit is set to 0x1 only if a
reply is needed, which is usually not required.
• Bit 7 is set to 0x0 to indicate a write transaction.
3. Sequence byte: The sequence byte can be a rolling counter and is used primarily when the host wants a
response from the DLPC900. Normally during a write operation, the DLPC900 does not respond; however,
the host can continue to increment the sequence byte for the next command operation.
4. Length: Two bytes in length, this denotes the number of data bytes in the sequence but excludes the number
of bytes in steps 1 through 4. The length denotes the total number of bytes sent in steps 5 (command bytes)
and 6 (data bytes).
5. USB Command: Two byte USB command.
6. Data: The data appropriate to the command.
1.3 INIT_DONE Signal
The DLPC900 does not have a dedicated INIT_DONE signal output to indicate that it has completed its power-
up initialization and is ready to accept commands. The user may configure one of the nine GPIOs available as
an INIT_DONE signal output simply by adding the GPIO configuration into the default batch file that is executed
at power-up. A 10-kΩ pull-down resistor must be connected to the GPIO that is used.
The following is an example of adding the configuration for GPIO_08 to a batch file, where GPIO_08 is
configured as an output and the signal is set high. When this command is added to the top of the batch file, the
GPIO output goes high in approximately 800 ms from the time POSENSE goes high:
GPIO_CONFIG: 0x8 0x3
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This chapter lists the DLPC900 control commands.
The following sections list the supported control commands of the DLPC900. In the Type column, ‘wr’ type
is a writeable field through I2C or USB write transactions. Data can also be read through I2C or USB read
transactions for ‘wr’ type bits. Type r is read-only. Write transactions to read-only fields are ignored.
The Reset column in all of the following command tables is the default value after power up. These values may
be overwritten after power up.
Note
Reserved bits and registers. When writing to valid command bit fields, set all bits marked as unused
or reserved to 0, unless specified otherwise.
Note
Momentary Image Corruption During Command Writes. Certain commands may cause brief visual
artifacts in the display image under some circumstances. Command data values may always be read
without impacting displayed image. To avoid momentary image corruption due to a command, disable
the LEDs prior to the command write, then re-enable the LEDs after all commands have been issued.
Note
Writing or reading from undocumented registers is NOT recommended.
2.1 DLPC900 Status Commands
The DLPC900 has the following set of status commands:
Hardware Status
System Status
Main Status
Retrieve Firmware Version
Read Error Codes
Chapter 2
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2.1.1 Hardware Status
The hardware status command provides status information on the sequencer, digital micromirror device (DMD)
controller, and initialization of DLPC900.
Table 2-1. Hardware Status Command
I2C USB
Read 0x1A0A
0x20
Table 2-2. Hardware Status Command Definition
BYTE BITS DESCRIPTION RESET TYPE
0
0
Internal Initialization
d1 r0 = Error
1 = Successful
1
0 = No Error
d0 r
1 = Incompatible Controller or DMD
Note
This error also occurs if the wrong firmware for the system has
been loaded.
2
DMD Reset Controller Error
d0 r
0 = No error has occurred
1 = Multiple overlapping bias or reset operations are accessing the same DMD
block.
3
Forced Swap Error
d0 r0 = No error has occurred.
1 = Forced Swap Error occurred.
4(1)
0 = No Secondary Controller Present d0 (single
controller
DMD)
d1 (dual
controller
DMD)
r
1 = Secondary Controller Present and Ready
5 Reserved d0 r
6
Sequencer Abort Status Flag
d0 r0 = No error has occurred
1 = Sequencer has detected an error condition that caused an abort
7
Sequencer Error
d0 r0 = No error has occurred.
1 = Sequencer detected an error.
(1) When the DLPC900 is combined with a single controller DMD, this bit is 0. When two DLPC900 controllers are combined with a dual
controller DMD, this bit must be 1 for proper operation. If the bit is 0 and the DLPC900 is combined with a dual controller DMD, this
indicates a malfunction in one or both controllers.
Note
Any error condition indicates a fault condition and it must be corrected.
DLPC900 Control Commands www.ti.com
20 DLPC900 Programmer's Guide DLPU018G – OCTOBER 2014 – REVISED APRIL 2022
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