Table 3−2. PC Card—Card Detect and Voltage Sense Connections

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CD2//CCD2

CD1//CCD1

 

VS2//CVS2

VS1//CVS1

Key

Interface

 

VCC

VPP/VCORE

 

Ground

 

Ground

 

Open

 

Open

5 V

16-bit PC Card

 

5 V

Per CIS (VPP)

 

Ground

 

Ground

 

Open

 

Ground

5 V

16-bit PC Card

 

5 V and 3.3 V

Per CIS (VPP)

 

Ground

 

Ground

 

Ground

 

Ground

5 V

16-bit PC Card

 

5 V, 3.3 V, and

Per CIS (VPP)

 

 

 

 

 

X.X V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ground

 

Ground

 

Open

 

Ground

LV

16-bit PC Card

 

3.3 V

Per CIS (VPP)

 

Ground

 

Connect to

 

Open

 

Connect to

LV

CardBus PC Card

 

3.3 V

Per CIS (VPP)

 

 

CVS1

 

 

CCD1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ground

 

Ground

 

Ground

 

Ground

LV

16-bit PC Card

 

3.3 V and X.X V

Per CIS (VPP)

 

Connect to

 

Ground

 

Connect to

 

Ground

LV

CardBus PC Card

 

3.3 V and X.X V

Per CIS (VPP)

 

CVS2

 

 

CCD2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Connect to

 

Ground

 

Ground

 

Connect to

LV

CardBus PC Card

 

3.3 V, X.X V,

Per CIS (VPP)

 

CVS1

 

 

 

CCD2

 

and Y.Y V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ground

 

Ground

 

Ground

 

Open

LV

16-bit PC Card

 

X.X V

Per CIS (VPP)

 

Connect to

 

Ground

 

Connect to

 

Open

LV

CardBus PC Card

 

3.3 V

1.8 V (VCORE)

 

CVS2

 

 

CCD2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ground

 

Connect to

 

Connect to

 

Open

LV

CardBus PC Card

 

X.X V and Y.Y V

Per CIS (VPP)

 

 

CVS2

 

CCD1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Connect to

 

Ground

 

Open

 

Connect to

LV

CardBus PC Card

 

Y.Y V

Per CIS (VPP)

 

CVS1

 

 

 

CCD2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ground

 

Connect to

 

Ground

 

Connect to

LV

UltraMedia

 

Per query terminals

 

 

CVS1

 

 

CCD1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ground

 

Connect to

 

Connect to

 

Ground

 

Reserved

 

Reserved

 

 

CVS2

 

CCD1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3.5.4Flash Media Card Detection

The PCI7x21/PCI7x11 controller detects an MMC/SD card insertion through the MC_CD_0 terminal. When this terminal is 0, an MMC/SD card is inserted in the socket. The PCI7x21/PCI7x11 controller debounces the MC_CD_0 signal such that instability of the signal does not cause false card insertions. The debounce time is approximately 50 ms. The MC_CD_0 signal is not debounced on card removals. The filtered MC_CD_0 signal is used in the MMC/SD card detection and power control logic.

The MMC/SD card detection and power control logic contains three main states:

Socket empty, power off

Card inserted, power off

Card inserted, power on

The PCI7x21/PCI7x11 controller detects a Memory Stick card insertion through the MC_CD_1 terminal. When this terminal is 0, a Memory Stick card is inserted in the socket. The PCI7x21/PCI7x11 controller debounces the MC_CD_1 signal such that instability of the signal does not cause false card insertions. The debounce time is approximately 50 ms. The MC_CD_1 signal is not debounced on card removals. The filtered MC_CD_1 signal is used in the Memory Stick card detection and power control logic.

The Memory Stick card detection and power control logic contains three main states:

Socket empty, power off

Card inserted, power off

Card inserted, power on

3−7

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Texas Instruments PCI7421 Flash Media Card Detection, 2. PC Card-Card Detect and Voltage Sense Connections, Vcc Vpp/Vcore