CSR Compare Register, CSR compare | Texas Instruments TSB12LV26

4.5 CSR Compare Register

The CSR compare register is used to access the bus management CSR registers from the host through compare-swap operations. This register contains the data to be compared with the existing value of the CSR resource.

Bit

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

Name

CSR compare

Type

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

Default

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

Bit

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

0

Name

CSR compare

Type

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

Default

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

Register:

CSR compare

Type:

Read-only

Offset:

10h

Default:

XXXX XXXXh

4.6 CSR Control Register

The CSR control register is used to access the bus management CSR registers from the host through compare-swap operations. This register is used to control the compare-swap operation and to select the CSR resource. See Table 4±5 for a complete description of the register contents.

Bit		31		30	29			28		27	26	25	24		23		22	21	20	19	18	17	16

Name													CSR control

Type		RU		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	0	0	0	0	0	0

Bit		15		14	13			12		11	10	9	8		7		6	5	4	3	2	1	0

Name													CSR control

Type		R		R	R			R		R	R	R	R		R		R	R	R	R	R	R/W	R/W

Default		0		0	0			0		0	0	0	0		0		0	0	0	0	0	X	X
		Register:			CSR control
		Type:			Read/Write, Read/Update, Read-only
		Offset:			14h
		Default:			8000 000Xh
									Table 4±5. CSR Control Register Description

BIT		FIELD NAME					TYPE									DESCRIPTION

31		csrDone					RU		This bit is set by the TSB12LV26 when a compare-swap operation is complete. It is cleared whenever
31		csrDone					RU		this register is written.
									this register is written.

30±2		RSVD					R		Reserved. Bits 30±2 return 0s when read.

									This field selects the CSR resource as follows:
										00 = BUS_MANAGER_ID
1±0		csrSel					R/W			01 = BANDWIDTH_AVAILABLE
										10 = CHANNELS_AVAILABLE_HI
										11 = CHANNELS_AVAILABLE_LO

4±7

Image 45

Texas Instruments TSB12LV26 manual CSR Compare Register, CSR Control Register, CSR compare, CSR control

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.

Contents

Data Manual SLLS366A TSB12LV26 Important Notice Contents Page Mechanical Information List of Illustrations Vii List of Tables Viii Description Features Ordering Information Related DocumentsOrdering Number Name Voltage Package OHCI-Lynx PCI-Based Ieee 1394 Host Controller Vccp Pciclkrun Pciinta 3.3 VCC PZ Package TOP ViewVccp CCP Terminal Name ±1. Signals Sorted by Terminal Number ±2. Signal Names Sorted Alphanumerically to Terminal Number ±3. Power Supply TerminalsTerminal Description Name PCIRST, terminal ±4. PCI System TerminalsPciclk As open-drain ±5. PCI Address and Data Terminals During the data phase, AD31±AD0 contain data Pcic BE0 ±6. PCI Interface Control TerminalsIrdy Pcitrdy ±8. Miscellaneous Terminals ±7. Ieee 1394 PHY/Link TerminalsPage Access TAG Name Meaning ±1. Bit Field Access Tag Descriptions ±1. TSB12LV26 Block Diagram ±2. PCI Configuration Register Map PCI Configuration RegistersVendor ID Register Register Name Offset Command Command Register±3. Command Register Description Device ID Register Status Register Status±4. Status Register Description Latency timer and class cache line size Latency Timer and Class Cache Line Size RegisterClass Code and Revision ID Register Class code and revision ID Ohci Base Address Register Header Type and Bist Register Subsystem Identification Register TI Extension Base Address RegisterTI extension base address Subsystem identification Register Power management capabilities pointer Power Management Capabilities Pointer RegisterInterrupt Line and Pin Register Register Interrupt line and pin Ohci Control Register Mingnt and Maxlat Register Register Capability ID and next item pointer Capability ID and Next Item Pointer RegisterNextitem Capabilityid Power Management Capabilities Register Register Power management capabilities±14. Power Management Capabilities Register Description Power Management Extension Register Power Management Control and Status RegisterPower management control and status Power management extension Miscellaneous Configuration Register Miscellaneous configuration±17. Miscellaneous Configuration Register Link Enhancement Control Register Link enhancement control±18. Link Enhancement Control Register Description Subsystem access Subsystem Access Register±19. Subsystem Access Register Description Subdevid Gpio Control Register Gpio control±20. Gpio Control Register Description ±18 ±1. Ohci Register Map DMA Context Register Name Abbreviation OffsetGuid ROM Guidrom Isochronous receive interrupt mask IsoRecvIntMaskSet IsoRecvIntEventClearPhysicalRequestFilterHiClear Physical request filter low PhysicalRequestFilterLoSet Isochronous receive context command Isochronous transmit context commandCommandPtr 40Ch + 32*n Pointer Context match ContextMatch Asynchronous context control ContextControlSet Ohci Version Register Ohci version±2. Ohci Version Register Description ±3. Guid ROM Register Description Guid ROM RegisterGuid ROM RSU CSR Data Register Asynchronous Transmit Retries RegisterAsynchronous transmit retries ±4. Asynchronous Transmit Retries Register Description CSR Control Register CSR Compare RegisterCSR compare CSR control Configuration ROM header Configuration ROM Header Register±6. Configuration ROM Header Register Description Bus Identification Register Bus Options Register Bus options±7. Bus Options Register Description Guid Low Register Guid High RegisterGuid high Guid low Configuration ROM mapping Configuration ROM Mapping Register±8. Configuration ROM Mapping Register Description Posted Write Address Low Register Posted write address high Posted Write Address High Register±9. Posted Write Address High Register Description Vendor ID Host Controller Control Register Host controller control±10. Host Controller Control Register Description Self-ID Count Register Self-ID Buffer Pointer RegisterSelf ID-buffer pointer Self-ID count Isochronous receive channel mask high Isochronous Receive Channel Mask High Register Isochronous receive channel mask low Isochronous Receive Channel Mask Low Register Interrupt Event Register Interrupt event±14. Interrupt Event Register Description Arrq Rscu Arrs Rscu Interrupt mask Interrupt Mask Register±15. Interrupt Mask Register Description Rscu RSC Isochronous transmit interrupt event Isochronous Transmit Interrupt Event Register Isochronous transmit interrupt mask Isochronous Transmit Interrupt Mask Register±21 Isochronous transmit interrupt mask Isochronous Receive Interrupt Mask Register Isochronous Receive Interrupt Event RegisterIsochronous receive interrupt event Isochronous receive interrupt mask Fairness control Fairness Control Register±18. Fairness Control Register Description Fairness control Link Control Register Link control±19. Link Control Register Description Node identification Node Identification Register±20. Node Identification Register Description CPS PHY Layer Control Register PHY layer control±21. PHY Control Register Description Isochronous cycle timer Isochronous Cycle Timer Register±22. Isochronous Cycle Timer Register Description 24±12 Asynchronous Request Filter High Register Asynchronous request filter high±23. Asynchronous Request Filter High Register Description ±29 Asynchronous request filter low Asynchronous Request Filter Low Register±24. Asynchronous Request Filter Low Register Description ±30 Physical request filter high Physical Request Filter High Register±25. Physical Request Filter High Register Description Are accepted ±32 Physical request filter low Physical Request Filter Low Register±26. Physical Request Filter Low Register Description Physical request filter low Physical upper bound Physical Upper Bound Register Optional RegisterPhysical upper bound ±34 Asynchronous context control Asynchronous Context Control Register±27. Asynchronous Context Control Register Description Rscu RSU Asynchronous 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 Isochronous Transmit Context Command Pointer RegisterIsochronous Receive Context Control Register Isochronous receive context control Reserved. Bits 27±16 return 0s when read CycleMatchEnableMultiChanMode Match register see .43 is ignored Isochronous receive context command pointer Isochronous Receive Context Command Pointer RegisterIsochronous receive context command pointer ±40 Isochronous Receive Context Match Register When the command descriptor w field is set to 11bIsochronous 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 Absolute Maximum Ratings Over Operating Temperature Ranges² Electrical Characteristics Recommended Operating Conditions Operation MIN NOMUnit Switching Characteristics for PHY-Link Interface§ Switching Characteristics for PCI Interface§Operation Test MIN MAX Unit Conditions Parameter Measured MIN TYP MAX UnitPage PZ S-PQFP-G100 Mechanical InformationPage Important Notice