pca9698 NXP Semiconductors, pca9698 Datasheet - Page 4

• Manufacturer Part Number: pca9698
• Description: 40-bit Fm+ I2c-bus Advanced I/o Port With Reset, Oe And Int
• Manufacturer: NXP Semiconductors

Philips Semiconductors
PCA9698_2
Product data sheet
Fig 2. Simplified schematic of the I/Os (IO0_0 to IO4_7)
shift register
write pulse
data from
On power-up or RESET, all registers return to default values.
D
CK
write configuration
FF
Q
write polarity
shift register
shift register
read pulse
data from
data from
OCH
pulse
pulse
STOP
pulse
I/O
configuration
register
output port
register
D
CK
D
CK
FF
FF
Q
Q
Q
40-bit Fm+ I
Rev. 02 — 19 July 2006
OUTx
2
OEPOL
C-bus advanced I/O port with RESET, OE and INT
input port
register
polarity inversion
register
D
CK
D
CK
OE
FF
FF
Q
Q
configuration port register data (Cx[y])
output port register data (Ox[y])
Mx[y]
MANAGEMENT
INTERRUPT
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
V
DD
PCA9698
IOx_y
INT
input port
register data
(Ix[y])
polarity inversion
register data
(Px[y])
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