Table 15. Pin State Table—PC Card Socket A
Signal Name
[Alternate
Function]
Max
Load Supply
(pF)
Power
Down Note 5 V
Group
Pin
#
Output
Drive
Reset
State Operation
Normal
Suspend
State
Type
1,2
BVD1_A
BVD2_A
CD_A
V1
R3
R2
M3
N3
I
I
VCC
VCC
VCC
I-PU
I-PU
I-PU
L
I-PPU
I-PPU
I-PPU
O
I-PPUD
I-PPUD
G
G
G
G
G
S
S
S
S
S
1, 2
1, 2
1, 2
1, 2
I
I-PPUD
ICDIR
O
B
B
50
50
VCC
VCC
H[TS-PD][TS]
H[TS-PD][TS]
MCEH_A
O
H
O
[[BNDSCN_TMS]]
[[I]]
[I-PD]
1, 2
MCEL_A
[[BDNSCN_TCK]]
P2
O
[[I]]
B
B
50
50
VCC
H
O
[I-PD]
H[TS-PD][TS]
G
S
1, 2
1, 2
1, 2
OE
P1
P3
M2
O
I
VCC
VCC
VCC
H
I-PU
H
O
H[TS-PD][TS]
I-PPUD
G
G
G
S
S
S
RDY_A
I-PPU
REG_A
[[BNDSCN_TDO]]
O
[[O]]
B
B
50
50
O
[O]
H[TS-PD][TS]
1, 2
RST_A
R1
O
VCC
O
O
L[TS-PD]
G
S
[[BNDSCN_TDI]]
[[I]]
[I-PD]
1, 2
1, 2
1, 2
WAIT_AB
WE
U1
N2
T2
I
O
I
VCC
VCC
VCC
I-PU
H
I-PPU
O
I-PPUD
H[TS-PD][TS]
I-PPUD
G
G
G
S
S
S
B
50
WP_A
I-PU
I-PPU
Notes:
1. On the ÉlanSC400 microcontroller only, the PC Card control signals for Socket A:
The pullup resistors for the input signals are built in and can be disabled if external pullups are necessary (the external pullups
can be on a different power plane).
In Suspend mode, the signals can be configured for: a card not plugged in (inputs terminated with internal resistors), a card
plugged in and powered (the output signals drive out inactive), a card plugged in and powered and at 5 V (the inactive High
output signals are three-stated and pullup resistors should be put on the board), and a card plugged in and powered off (the
signals terminated with pulldown resistors) (Power-Down Group G).
Summary: The outputs are built-in pulldown resistors that are invoked by:
–Suspend and PC Card Socket A is programmed to be powered off in Suspend (Power-Down Group G).
–These are not pulldowns for normal operation. These are driven outputs.
Summary: The inputs are built-in pullup and pulldown resistors that are invoked by:
–Reset invokes pullups.
–During normal operation, the pullup resistors can be disabled by a register bit.
–During Suspend mode, the inputs will have pulldowns if the PC Card Socket A interface is programmed to be powered off
in Suspend mode (Power-Down Group G). If the socket is not programmed to be powered off in Suspend mode, the inputs
have the same state as when operating: the pullups are programmable to be enabled or not.
2. The PC Card signals MCEL_A, MCEH_A, RST_A, REG_A, CD_A, RDY_A, BVD1_A, BVD2_A, WP_A, WAIT_AB, OE, WE,
and ICDIR are not supported on the ÉlanSC410 microcontroller.
Élan™SC400 and ÉlanSC410 Microcontrollers Data Sheet
55
AMD [ AMD ]
