Texas Instruments TSB12LV26 Device ID Register, Command Register, BIT Field Name Type Description

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3.3 Device ID Register

The device ID register contains a value assigned to the TSB12LV26 by Texas Instruments. The device identification for the TSB12LV26 is 8020h.

Bit

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Name

 

 

 

 

 

 

 

Device ID

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Type

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Default

1

0

0

0

0

0

0

0

0

0

1

0

0

0

0

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Register: Device ID

Type: Read-only

Offset: 02h

Default: 8020h

3.4 Command Register

The command register provides control over the TSB12LV26 interface to the PCI bus. All bit functions adhere to the definitions in the PCI Local Bus Specification, as seen in the bit descriptions of Table 3±3.

Bit

15

 

14

13

 

12

 

 

11

 

10

 

9

 

8

7

 

6

5

4

 

3

 

2

 

1

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Name

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Command

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Type

R

 

R

R

 

R

 

R

 

R

 

R

 

R/W

R

 

R/W

R

R/W

R

R/W

R/W

 

R

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Default

0

 

0

0

 

0

 

 

0

 

0

 

0

 

0

0

 

0

0

0

 

0

 

0

 

0

0

 

 

Register:

Command

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Type:

 

Read/Write, Read-only

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Offset:

 

04h

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Default:

 

0000h

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Table 3±3. Command Register Description

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BIT

 

FIELD NAME

 

TYPE

 

 

 

 

 

 

 

 

 

DESCRIPTION

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

15±10

 

RSVD

 

 

R

 

 

Reserved. Bits 15±10 return 0s when read.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

9

 

FBB_ENB

 

 

R

 

 

Fast back-to-back enable. The TSB12LV26 does not generate fast back-to-back transactions, thus

 

 

 

 

 

this bit returns 0 when read.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

enable. When this bit is set, the TSB12LV26

 

 

driver is enabled.

 

 

 

 

can

8

 

SERR_ENB

 

R/W

 

 

PCI_SERR

PCI_SERR

PCI_SERR

 

 

 

 

be asserted after detecting an address parity error on the PCI bus.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7

 

STEP_ENB

 

R

 

 

Address/data stepping control. The TSB12LV26 does not support address/data stepping, thus this bit

 

 

 

 

is hardwired to 0.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Parity error enable. When this bit is set, the TSB12LV26 is enabled to drive

 

 

 

 

response to

6

 

PERR_ENB

 

R/W

 

 

PCI_PERR

 

 

 

 

parity errors through the PCI_PERR signal.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

 

VGA_ENB

 

R

 

 

VGA palette snoop enable. The TSB12LV26 does not feature VGA palette snooping. This bit returns 0

 

 

 

 

when read.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Memory write and invalidate enable. When this bit is set, the TSB12LV26 is enabled to generate MWI

4

 

MWI_ENB

 

 

R/W

 

 

PCI bus commands. If this bit is cleared, then the TSB12LV26 generates memory write commands

 

 

 

 

 

 

 

 

 

 

instead.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

 

SPECIAL

 

 

R

 

 

Special cycle enable. The TSB12LV26 function does not respond to special cycle transactions. This bit

 

 

 

 

 

returns 0 when read.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

 

MASTER_ENB

 

R/W

 

 

Bus master enable. When this bit is set, the TSB12LV26 is enabled to initiate cycles on the PCI bus.

 

 

 

 

 

 

 

 

 

 

 

1

 

MEMORY_ENB

 

R/W

 

 

Memory response enable. Setting this bit enables the TSB12LV26 to respond to memory cycles on the

 

 

 

 

PCI bus. This bit must be set to access OHCI registers.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

 

IO_ENB

 

 

R

 

 

I/O space enable. The TSB12LV26 does not implement any I/O mapped functionality; thus, this bit re-

 

 

 

 

 

turns 0 when read.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3±4

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Contents Data Manual SLLS366A TSB12LV26 Important Notice Contents Page Mechanical Information List of Illustrations List of Tables ViiViii Features DescriptionRelated Documents Ordering InformationOrdering Number Name Voltage Package OHCI-Lynx PCI-Based Ieee 1394 Host ControllerPZ Package TOP View Vccp Pciclkrun Pciinta 3.3 VCCVccp CCP±1. Signals Sorted by Terminal Number Terminal Name±2. Signal Names Sorted Alphanumerically to Terminal Number ±3. Power Supply TerminalsTerminal Description Name ±4. PCI System Terminals PCIRST, terminalPciclk As open-drainDuring the data phase, AD31±AD0 contain data ±5. PCI Address and Data Terminals±6. PCI Interface Control Terminals Pcic BE0Irdy Pcitrdy±7. Ieee 1394 PHY/Link Terminals ±8. Miscellaneous TerminalsPage ±1. Bit Field Access Tag Descriptions Access TAG Name Meaning±1. TSB12LV26 Block Diagram PCI Configuration Registers ±2. PCI Configuration Register MapVendor ID Register Register Name OffsetCommand Register Command±3. Command Register Description Device ID RegisterStatus Register Status±4. Status Register Description Latency Timer and Class Cache Line Size Register Latency timer and class cache line sizeClass Code and Revision ID Register Class code and revision IDHeader Type and Bist Register Ohci Base Address RegisterTI Extension Base Address Register Subsystem Identification RegisterTI extension base address Subsystem identificationPower Management Capabilities Pointer Register Register Power management capabilities pointerInterrupt Line and Pin Register Register Interrupt line and pinMingnt and Maxlat Register Ohci Control RegisterCapability ID and Next Item Pointer Register Register Capability ID and next item pointerNextitem CapabilityidPower Management Capabilities Register Register Power management capabilities±14. Power Management Capabilities Register Description Power Management Control and Status Register Power Management Extension RegisterPower management control and status Power management extensionMiscellaneous Configuration Register Miscellaneous configuration±17. Miscellaneous Configuration Register Link Enhancement Control Register Link enhancement control±18. Link Enhancement Control Register Description Subsystem Access Register Subsystem access±19. Subsystem Access Register Description SubdevidGpio Control Register Gpio control±20. Gpio Control Register Description ±18 ±1. Ohci Register Map DMA Context Register Name Abbreviation OffsetGuid ROM Guidrom IsoRecvIntEventClear Isochronous receive interrupt mask IsoRecvIntMaskSetPhysicalRequestFilterHiClear Physical request filter low PhysicalRequestFilterLoSetIsochronous transmit context command Isochronous receive context commandCommandPtr 40Ch + 32*n Pointer Context match ContextMatch Asynchronous context control ContextControlSetOhci Version Register Ohci version±2. Ohci Version Register Description Guid ROM Register ±3. Guid ROM Register DescriptionGuid ROM RSUAsynchronous Transmit Retries Register CSR Data RegisterAsynchronous transmit retries ±4. Asynchronous Transmit Retries Register DescriptionCSR Compare Register CSR Control RegisterCSR compare CSR controlConfiguration ROM Header Register Configuration ROM header±6. Configuration ROM Header Register Description Bus Identification RegisterBus Options Register Bus options±7. Bus Options Register Description Guid High Register Guid Low RegisterGuid high Guid lowConfiguration ROM Mapping Register Configuration ROM mapping±8. Configuration ROM Mapping Register Description Posted Write Address Low RegisterPosted Write Address High Register Posted write address high±9. Posted Write Address High Register Description Vendor IDHost Controller Control Register Host controller control±10. Host Controller Control Register Description Self-ID Buffer Pointer Register Self-ID Count RegisterSelf ID-buffer pointer Self-ID countIsochronous Receive Channel Mask High Register Isochronous receive channel mask highIsochronous Receive Channel Mask Low Register Isochronous receive channel mask lowInterrupt Event Register Interrupt event±14. Interrupt Event Register Description Arrs Rscu Arrq RscuInterrupt Mask Register Interrupt mask±15. Interrupt Mask Register Description Rscu RSCIsochronous Transmit Interrupt Event Register Isochronous transmit interrupt eventIsochronous Transmit Interrupt Mask Register Isochronous transmit interrupt mask±21 Isochronous transmit interrupt maskIsochronous Receive Interrupt Event Register Isochronous Receive Interrupt Mask RegisterIsochronous receive interrupt event Isochronous receive interrupt maskFairness Control Register Fairness control±18. Fairness Control Register Description Fairness controlLink Control Register Link control±19. Link Control Register Description Node Identification Register Node identification±20. Node Identification Register Description CPSPHY Layer Control Register PHY layer control±21. PHY Control Register Description Isochronous Cycle Timer Register Isochronous cycle timer±22. Isochronous Cycle Timer Register Description 24±12Asynchronous Request Filter High Register Asynchronous request filter high±23. Asynchronous Request Filter High Register Description ±29 Asynchronous Request Filter Low Register Asynchronous request filter low±24. Asynchronous Request Filter Low Register Description ±30Physical Request Filter High Register Physical request filter high±25. Physical Request Filter High Register Description Are accepted±32 Physical Request Filter Low Register Physical request filter low±26. Physical Request Filter Low Register Description Physical request filter lowPhysical Upper Bound Register Optional Register Physical upper boundPhysical upper bound ±34Asynchronous Context Control Register Asynchronous context control±27. Asynchronous Context Control Register Description Rscu RSUAsynchronous Context Command Pointer Register Asynchronous context command pointer31±4 DescriptorAddress Isochronous Transmit Context Control Register Isochronous transmit context controlRSC RSU Isochronous Transmit Context Command Pointer Register Isochronous transmit context command pointerIsochronous Receive Context Control Register Isochronous receive context controlCycleMatchEnable Reserved. Bits 27±16 return 0s when readMultiChanMode Match register see .43 is ignoredIsochronous Receive Context Command Pointer Register Isochronous receive context command pointerIsochronous receive context command pointer ±40When the command descriptor w field is set to 11b Isochronous Receive Context Match RegisterIsochronous receive context match ±31. Isochronous Receive Context Match Register Description±42 Gpio Interface Page ±1. Registers and Bits Loadable through Serial ROM ROM Offset OHCI/PCI Offset Register Bits Loaded From ROM13h PCI register 40h PCI Ohci register ±2. Serial ROM Map Byte Byte Description AddressRsvd PME Electrical Characteristics Absolute Maximum Ratings Over Operating Temperature Ranges²Recommended Operating Conditions Operation MIN NOMUnit Switching Characteristics for PCI Interface§ Switching Characteristics for PHY-Link Interface§Operation Test MIN MAX Unit Conditions Parameter Measured MIN TYP MAX UnitPage Mechanical Information PZ S-PQFP-G100Page Important Notice

TSB12LV26 specifications

The Texas Instruments TSB12LV26 is a high-performance, low-voltage transceiver designed for Serial Bus applications. It is widely recognized for its robust features and versatility, making it a popular choice among engineers and designers in various industries. One of the primary features of the TSB12LV26 is its support for high-speed data transmission, enabling it to operate at speeds up to 400 Mbps. This capability is essential for applications that demand rapid data transfer, such as in multimedia and communication systems.

The TSB12LV26 is part of the IEEE 1394 standard, also known as FireWire, which is widely used for connecting devices like digital cameras, external hard drives, and printers. The chip operates within a voltage range of 2.7V to 3.6V, making it suitable for low-power applications where energy efficiency is critical. The integration of advanced Low-Voltage Differential Signaling (LVDS) technology within the TSB12LV26 enhances signal integrity and reduces electromagnetic interference, resulting in more reliable performance over longer distances.

In terms of its physical characteristics, the TSB12LV26 is available in a compact 48-pin HTQFP package, which is beneficial for space-constrained designs. The device features a comprehensive set of input and output pins, allowing for flexible connectivity options. Additionally, the TSB12LV26 includes advanced power management features, including low-power modes that help extend battery life in portable devices.

Another significant advantage of the TSB12LV26 is its capability for peer-to-peer communication, enabling devices to connect and communicate directly without the need for a central controller. This functionality supports a wide range of device configurations and simplifies system architecture. Furthermore, the transceiver offers built-in support for asynchronous and isochronous data transfer, making it adaptable for various application requirements.

The TSB12LV26 also adheres to stringent EMI and ESD protection standards, ensuring reliable operation in challenging environments. With a rich feature set, excellent performance characteristics, and compliance with industry standards, the Texas Instruments TSB12LV26 remains an ideal choice for engineers looking to implement high-speed and reliable communication in their designs. Overall, it represents a significant advancement in the field of data transmission technology, making it a preferred component for numerous electronic applications.
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