CMX878 查看數據表（PDF） - CML Microsystems Plc
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CMX878 Datasheet PDF : 61 Pages
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CMX878
CMX878
D1/D6/E1
packages
Pin No.
20
21
22
23
24
25
26
27
28
Signal
Description
Name
GP OP1
GP OP2
GP OP3
CSN
CMD DATA
SERIAL
CLOCK
REPLY DATA
IRQN
DVDD
Type
O/P
O/P
O/P
I/P
I/P
I/P
T/S
O/P
Power
A General Purpose logic output. An example
use would be as an enable for a second
regulator in circuits with a battery.
A General Purpose logic output. An example
use would be as a line voltage measurement
divider enable in circuits where this function is
required separately from the regulator.
A General Purpose logic output. An example
use would be as a control to inhibit the ring
signal in systems where the application is in
series with a phone.
The C-BUS chip select input from the µC.
The C-BUS serial data input from the µC.
The C-BUS serial clock input from the µC.
A 3-state C-BUS serial data output to the µC.
This output is high impedance when not sending
data to the µC.
A ‘wire-ORable’ output for connection to a µC
Interrupt Request input. This output is pulled
down to VSS when active and is high impedance
when inactive. An external pullup resistor is
required ie R1 of Figure 2
The positive supply rail for the digital on-chip
blocks.
Notes:
I/P
=
O/P =
BI
=
T/S =
NC =
Input
Output
Bidirectional
3-state Output
No Connection
© 2002 Consumer Microcircuits Limited
7
D/878/2
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