RB5C396 Ricoh Corporation, RB5C396 Datasheet - Page 54

• Manufacturer Part Number: RB5C396
• Description: PC Card Controller Compliant With Pcmcia 2.1/jeida 4.2
• Manufacturer: Ricoh Corporation

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3. Connections to PCMCIA Slot
3.1 Pull-up Resistor
pins should be pulled up on the PC card slots. Besides these pins,there are some pins which must be pulled up on
the system side. They are listed in the table below.
requires no external pull-up resistor while the other pins listed above require an external pull-up resistor. For
details, see “3.2 5VDET/GPI and VSI# Pins”.
card from the PC card slot and therefore be confined to the VCC_CORE or the VCC_AT.
be pulled up to, the VCC_AT.
3.2 5VDET/GPI and VS1# Pins
upon occurrence of any input change. The VS1# pin is connected to the GND pin on the 3.3V PC card and no con-
nection pin on any other card. The 5VDET/GPI pin, which is internally pulled up as described before, can be con-
nected to the VS1# pin as shown in the figure below to identify whether the PC card supply voltage is 5 or 3.3V.
The 5VDET/GPI pin must be connected to the VS1# pin in consideration of the following :
Register, see “6. Access to Internal Registers” in “FUNCTIONAL DESCRIPTION”.
RF5C296/RF5C396L/RB5C396/RF5C396
· An inverted signal from the 5VDET/GPI pin is read back to bit7 in the Interface Status Register.
· Bit2 (GPI Enable Bit) must always be set to “0” in the Card Detect and Control Register.
The Personal Computer Memory Card Industry Association (PCMCIA) standard requires that some types of
For the RF5C296 and the RF5C396, the VSI# pin, which is connected to the 5VDET/GPI pin internally pulled up,
Basically, the CD1# and CD2# pins should be pulled by a power supply which survives after removal of the PC
For the RF5C296 and the RF5C396, in particular, the CD1# and CD2# pins are powered by, and should therefore
Originally, the 5VDET/GPI pin is used as a general-purpose input (GPI) pin capable of generating interrupts
For details on bit7 in the Interface Status Register and bit2 (GPI Enable Bit) in the Card Detect and Control
RDY/BSY#,INPACK#,WAIT#,
Pins which must be pulled up
CD1#,CD2#,VS1#
WP,BVD1,BVD2
RF5C296/RF5C396
VCCSLOT#
5VDET/GPI
VCC3EN#
VCC5EN#
Power Control
Circuits
Power supply to which pins are pulled up
(VCC common to card power supply)
Card Slot
PCMCIA
VCC
VS1#
VCC_AT