CF4320H_09 Datasheet, PDF (3/29 Pages) Texas Instruments – CompactFlash™ BUS-INTERFACE CHIP WITH ±15-kV ESD PROTECTION, TRANSLATION, AND CARD-DETECT CIRCUITRY

www.ti.com
CF4320H
CompactFlash™ BUS-INTERFACE CHIP
WITH ±15-kV ESD PROTECTION, TRANSLATION, AND CARD-DETECT CIRCUITRY
SCES655A – APRIL 2006 – REVISED AUGUST 2006
Data Bits
The CF4320H has 16 data lines organized as two groups of 8 bits each. The ENL signal controls the lower 8
bits (D07–D00), while the ENH signal controls the upper 8 bits (D15–D08).
MASTER_EN
L
L
L
H
LOWER 8-BIT DATA BUS TRANSCEIVERS⁽¹⁾
(D07–D00, SD07–SD00)
INPUTS
ENL
L
L
H
X
DIR (S/CF)
H
L
X
X
OPERATION
SD data to D bus
D data to SD bus
Isolation. D07–D00 and SD07–SD00 inputs can float.
Isolation, low-power mode
(1) X = H or L
MASTER_EN
L
L
L
H
UPPER 8-BIT DATA BUS TRANSCEIVERS⁽¹⁾
(D15–D08, SD15–SD08)
INPUTS
ENH
L
L
H
X
DIR (S/CF)
H
L
X
X
OPERATION
SD data to D bus
D data to SD bus
Isolation. D15–D08 and SD15–SD08 inputs can float.
Isolation, low-power mode
(1) X = H or L
Address Bits
The CF4320H has 11 unidirectional address bits flowing from the system to the CF card.
ADDRESS BUS BUFFERS⁽¹⁾
INPUTS
MASTER_EN BUF_EN
SA
L
L
H
L
L
L
L
H
X
H
X
X
OUTPUT
A
H
L
Z, SA inputs can float.
Z, low-power mode
(1) X = H or L
Submit Documentation Feedback
3