CY7C68003 Ver la hoja de datos (PDF) - Cypress Semiconductor

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Fabricante

CY7C68003

MoBL-USB™ TX2UL USB 2.0 ULPI Transceiver

Cypress Semiconductor 

CY7C68003

Operation Modes

There are six operation modes available in TX2UL. They are:

■ Normal operation mode

■ Configuration mode

■ ULPI low power mode

■ Sleep mode

■ Carkit UART pass through mode

■ Tristate ULPI interface output mode (only available in 24-pin

QFN package)

When changing the operation modes, if the current and changing

modes are not the normal operation Mode, TX2UL first changes

to the normal operation mode. For example, to change from

ULPI low power mode to Sleep mode, TX2UL changes to normal

operation mode first, and then to Sleep mode. The Mode Change

State diagram in Figure 3 shows the mode change path of

TX2UL. The entries of the six operations modes (20-pin CSP

package has five operation modes) are listed in Table 4 and

Table 5. There are three mode change transactions that require

the RESET_N assert or deassert with tSTATE (see Table 21 on

page 21 for tSTATE). The three mode change transactions are:

■ Change from normal operation mode to configuration mode;

RESET_N is required to assert with tSTATE

■ Change from configuration mode to normal operation mode;

RESET_N is required to de-assert with tSTATE

■ Change from normal operation mode to sleep mode; RESET_N

is required to assert with tSTATE

Figure 3. Mode Change State Diagram

Sleep Mode

Carkit UART Pass Through

Mode

Tristate ULPI Interface Output

Mode (available in 24-pin QFN

package only)

Normal Operation Mode

Configuration Mode

ULPI Low Power Mode

Table 4. TX2UL 20-Pin CPS Package Operation Modes

RESET_N

Mode

0 (Low) Sleep mode

1 (High) Normal operation mode

1 (High) Enter into ULPI low power mode by setting

SuspendM register bit (in Function Control

Register) to 0 during the normal operation mode.

1 (High) Enter into Carkit UART pass through mode by

setting Carkit mode register bit (in Interface Control

Register) to 1 during the normal operation mode.

0 (Low) Enter into Configuration Mode

when

Power On

(VCC On)

Table 5. TX2UL 24-Pin QFN Package Operation Modes

CS_N

0 (Low)

0 (Low)

0 (Low)

0 (Low)

RESET_N

0 (Low)

1 (High)

1 (High)

1 (High)

Mode

Sleep mode

Normal operation mode

Enter into ULPI low power mode by

setting SuspendM register bit (in

Function Control Register) to 0

during the normal operation mode.

Enter into Carkit UART pass

through mode by setting Carkit

Mode register bit (in Interface

Control Register) to 1 during the

normal operation mode.

1 (High)

0 (Low) Configuration mode

1 (High) 1 (High) Tristate ULPI interface output pins

Document Number: 001-15775 Rev. *L

Page 5 of 30

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