
Introduction
37
September 2005
SCPS110
Table 216. CardBus PC Card Address and Data Terminals
External components are not applicable for the 16-bit PC Card address and data terminals. If any CardBus
PC Card address and data terminal is unused, then the terminal may be left floating.
TERMINAL
DESCRIPTION
I/O
INPUT
OUTPUT
POWER
NAME
NO.
DESCRIPTION
I/O
TYPE
INPUT
OUTPUT
POWER
RAIL
CAD31
CAD30
CAD29
CAD28
CAD27
CAD26
CAD25
CAD24
CAD23
CAD22
CAD21
CAD20
CAD19
CAD18
CAD17
CAD16
CAD15
CAD14
CAD13
CAD12
CAD11
CAD10
CAD9
CAD8
CAD7
CAD6
CAD5
CAD4
CAD3
CAD2
CAD1
CAD0
C10
A10
F11
E11
C11
B13
C13
A14
B14
B15
E14
A16
D19
E17
F15
H19
J17
J15
J18
K15
K17
K18
L15
L18
L19
M17
M18
N19
M15
N17
N18
P19
CardBus address and data. These signals make up the multiplexed CardBus address and data
bus on the CardBus interface. During the address phase of a CardBus cycle, CAD31CAD0
contain a 32-bit address. During the data phase of a CardBus cycle, CAD31CAD0 contain
data. CAD31 is the most significant bit.
I/O
PCII7
PCIO7
VCCCB
CC/BE3
CC/BE2
CC/BE1
CC/BE0
E13
E18
H18
L17
CardBus bus commands and byte enables. CC/BE3CC/BE0 are multiplexed on the same
CardBus terminals. During the address phase of a CardBus cycle, CC/BE3CC/BE0 define
the bus command. During the data phase, this 4-bit bus is used as byte enables. The byte
enables determine which byte paths of the full 32-bit data bus carry meaningful data. CC/BE0
applies to byte 0 (CAD7CAD0), CC/BE1 applies to byte 1 (CAD15CAD8), CC/BE2 applies
to byte 2 (CAD23CAD16), and CC/BE3 applies to byte 3 (CAD31CAD24).
I/O
PCII7
PCIO7
VCCCB
CPAR
H14
CardBus parity. In all CardBus read and write cycles, the controller calculates even parity
across the CAD and CC/BE buses. As an initiator during CardBus cycles, the controller outputs
CPAR with a one-CCLK delay. As a target during CardBus cycles, the controller compares its
calculated parity to the parity indicator of the initiator; a compare error results in a parity error
assertion.
I/O
PCII7
PCIO7
VCCCB
These terminals are reserved for the PCI7402 and PCI8402 controllers.