Texas Instruments Dual/Single Socket CardBus and UntraMedia Controller PCI7621 - Manual (Page 63)

3−7
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
X.X V
Per CIS (VPP)
Ground Ground Open Ground LV 16-bit PC Card 3.3 V Per CIS (VPP)
Ground
Connect to
CVS1
Open
Connect to
CCD1
LV CardBus PC Card 3.3 V Per CIS (VPP)
Ground Ground Ground Ground LV 16-bit PC Card 3.3 V and X.X V Per CIS (VPP)
Connect to
CVS2
Ground
Connect to
CCD2
Ground LV CardBus PC Card 3.3 V and X.X V Per CIS (VPP)
Connect to
CVS1
Ground Ground
Connect to
CCD2
LV CardBus PC Card
3.3 V, X.X V,
and Y.Y V
Per CIS (VPP)
Ground Ground Ground Open LV 16-bit PC Card X.X V Per CIS (VPP)
Connect to
CVS2
Ground
Connect to
CCD2
Open LV CardBus PC Card 3.3 V 1.8 V (VCORE)
Ground
Connect to
CVS2
Connect to
CCD1
Open LV CardBus PC Card X.X V and Y.Y V Per CIS (VPP)
Connect to
CVS1
Ground Open
Connect to
CCD2
LV CardBus PC Card Y.Y V Per CIS (VPP)
Ground
Connect to
CVS1
Ground
Connect to
CCD1
LV UltraMedia Per query terminals
Ground
Connect to
CVS2
Connect to
CCD1
Ground Reserved Reserved
3.5.4 Flash 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