Transcend Information Transcend CF 80X TS32M~1GCF80 - Manual (Page 17)

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80X CompactFlash Card
Transcend Information Inc.
V1.1
17
3.4 Signal Interface
Electrical specifications shall be maintained to ensure data reliability.
Item Signal Card
10
Host
10
Control Signal
-CE1
-CE2
-REG
-IORD
-IOWR
Pull-up to V
CC
500 K
Ω ≧ R≧ 50 KΩ and
shall be sufficient to keep inputs inactive
when the pins are not connected at the host.
1
-OE
-WE
Pull-up to V
CC
500 K Ω ≧ R ≧ 50 KΩ . 1,2
RESET Pull-up to V
CC
500 K
Ω ≧ R ≧ 50 KΩ . 1,2,9,
Status Signal
READY
-WAIT
WP
Pull-up to V
CC
R
≧ 10 KΩ . 3
-INPACK
In PCMCIA PC Card modes Pull-up to V
CC
R ≧ 10 KΩ . 4
In True IDE mode, if DMA operation is
supported by the host, Pull-down to Gnd R
≧ 5.6 KΩ .
5
PC Card / True IDE hosts switch the pull-up
to pull down in True IDE mode if DMA
operation is supported.
The PC Card mode Pull-up may be left
active during True IDE mode if True IDE
DMA operation is not supported.
Address
A[10:00]
-CSEL
Data Bus D[15:00]
1.
Card Detect -CD[2:1] Connected to GND in the card
Voltage Sense
-VS1
-VS2
Pull-up to Vcc 10 K
Ω ≦ R ≦ 100KΩ .
Battery/Detect BVD[2:1] Pull-up R ≧ 50 KΩ . 3.6
Notes: 1) Control Signals: each card shall present a load to the socket no larger than 50 pF
10
at a DC current of 700 μ A low
state and 150 μ A high state, including pull-resistor. The socket shall be able to drive at least the following load
10
while meeting all AC timing requirements: (the number of sockets wired in parallel) multiplied by (50 pF with DC
current 700 μ A low state and 150 μ A high state per socket).
2) Resistor is optional.
3) Status Signals: the socket shall present a load to the card no larger than 50 pF 10 at a DC current of 400 μ A low state
and 100 μ A high state, including pull-up resistor. The card shall be able to drive at least the following load
10
while
meeting all AC timing requirements: 50 pF at a DC current of 400 μ A low state and 100 μ A high state.
4) Status Signals: the socket shall present a load to the card no larger than 50 pF 10 at a DC current of 400 μ A low state
and 100 μ A high state, including pull-up resistor. The card shall be able to drive at least the following load
10
while