Manuals / Cypress / Computer Equipment / Computer Hardware

Cypress CY7C1917CV18 TAP Controller State Diagram, State diagram for the TAP controller follows

Models: CY7C1321CV18 CY7C1917CV18 CY7C1319CV18 CY7C1317CV18

1 31

Download 31 pages 16.97 Kb

Page 15

Image 15

CY7C1317CV18, CY7C1917CV18

CY7C1319CV18, CY7C1321CV18

TAP Controller State Diagram

The state diagram for the TAP controller follows. [9]

TEST-LOGIC RESET

TEST-LOGIC/ IDLE

1		1	1
1	SELECT	1	SELECT
	DR-SCAN		IR-SCAN
	0		0
	1		1

CAPTURE-DR		CAPTURE-IR
0		0
SHIFT-DR	0	SHIFT-IR	0
1		1
EXIT1-DR	1	EXIT1-IR	1
EXIT1-DR		EXIT1-IR
0		0
PAUSE-DR	0	PAUSE-IR	0
1		1
0		0
EXIT2-DR		EXIT2-IR
1		1
UPDATE-DR		UPDATE-IR
1		1
0		0

Note

9. The 0/1 next to each state represents the value at TMS at the rising edge of TCK.

Document Number: 001-07161 Rev. *D

Page 15 of 31

[+] Feedback

Page 15

Image 15

Cypress CY7C1917CV18, CY7C1321CV18, CY7C1319CV18 TAP Controller State Diagram, State diagram for the TAP controller follows

CY7C1321CV18, CY7C1917CV18, CY7C1319CV18, CY7C1317CV18 specifications

Cypress Semiconductor Corporation, a leading provider of advanced embedded memory solutions, offers a series of high-performance SRAM (Static Random Access Memory) devices ideal for a variety of applications. Among these devices are the CY7C1317CV18, CY7C1319CV18, CY7C1917CV18, and CY7C1321CV18. These components are designed to meet the growing demands for non-volatile memory in consumer electronics, automotive systems, telecommunications, and industrial applications.

The CY7C1317CV18 and CY7C1319CV18 are both 256K-bit static RAMs with distinct features. The CY7C1317CV18 offers a dual-port architecture, enabling concurrent access from multiple sources, which substantially enhances performance in data-intensive applications. On the other hand, the CY7C1319CV18 is designed for single-port access, making it ideal for simpler applications that do not require simultaneous data reads and writes.

Further extending Cypress's SRAM portfolio, the CY7C1917CV18 provides a 2M-bit memory configuration with fast access times, high-density storage, and low power consumption. It is particularly well-suited for applications needing quick data retrieval while maintaining efficiency. The architecture of the CY7C1917CV18 allows it to be integrated seamlessly into systems requiring reliable and robust data storage.

Completing the lineup is the CY7C1321CV18, which features an innovative 1M-bit SRAM design. This SRAM is known for its low latency and high speed, making it an excellent choice for high-performance computing applications. It supports a wide operating voltage range and provides a reliable solution for volatile memory needs, especially in fast caching scenarios.

These SRAM devices utilize advanced CMOS technology to achieve high speed and low power characteristics, making them competitive choices in the market. Their robust performance ensures that they satisfy the stringent requirements of various applications, including high-speed networking, graphics processing, and instrumentation.

In terms of reliability, all four devices are built to endure challenging operating conditions and provide excellent data retention. They are offered in compact packages that facilitate easy integration into PCBs, optimizing space and enhancing design flexibility. The combination of performance, low power consumption, and scalability makes Cypress's SRAM products particularly advantageous for next-generation applications across multiple industries.

Contents

Selection Guide FeaturesConfigurations Functional Description CLK Logic Block Diagram CY7C1317CV18Logic Block Diagram CY7C1917CV18 Doff Logic Block Diagram CY7C1319CV18 Logic Block Diagram CY7C1321CV18BWS CY7C1917CV18 2M x Pin ConfigurationBall Fbga 13 x 15 x 1.4 mm Pinout CY7C1317CV18 2M x CY7C1321CV18 512K x CY7C1319CV18 1M x Pin Definitions Pin Name Pin DescriptionSynchronous Read/Write Input. When TDO for Jtag Power Supply Inputs to the Core of the DevicePower Supply Inputs for the Outputs of the Device Referenced with Respect to Functional Overview Depth Expansion Programmable ImpedanceEcho Clocks Operation Application ExampleSRAM#1 ZQ SRAM#2 Comments Write Cycle Descriptions Device. D80 and D3518 remains unaltered Write cycle description table for CY7C1321CV18 followsDevice Into the device. D359 remains unaltered Ieee 1149.1 Serial Boundary Scan Jtag Idcode State diagram for the TAP controller follows TAP Controller State Diagram TAP Electrical Characteristics TAP Controller Block Diagram TAP Timing and Test Conditions TAP AC Switching Characteristics Register Name Bit Size Identification Register DefinitionsScan Register Sizes Instruction Codes Bit # Bump ID Boundary Scan Order Power Up Sequence in DDR-II Sram Power Up SequenceDLL Constraints Electrical Characteristics DC Electrical CharacteristicsMaximum Ratings AC Electrical Characteristics Input High Voltage Vref +Input LOW Voltage Vref Document Number 001-07161 Rev. *D Parameter Description Test Conditions Fbga Unit CapacitanceThermal Resistance Parameter Description Test Conditions Max Unit Parameter Min Max DLL Timing Parameter Min Max Output Times DON’T Care Undefined Switching Waveforms Ordering Information 250 167 Ball Fbga 13 x 15 x 1.4 mm Package Diagram Worldwide Sales and Design Support Products PSoC Solutions Sales, Solutions, and Legal Information