EV8810 Evaluation Kit
EV8810
Test Points
Test
point
TP1
TP2
Signal name
DISC_FB
ALERTPC
Description
Feedback taken from the CMX88x discriminator input amplifier.
Interrupt line from the PIC to the parallel port. When the CMX88x pulls its
IRQN low the PIC produces an interrupt, which comprises a positive (rising)
edge transition.
An EPP cycle can be initiated when this signal is low, and completed when
high.
This signal is taken low when an EPP data transfer cycle is in progress.
Digital ground connection.
Digital ground connection.
Digital ground connection.
Analogue ground connection.
Analogue ground connection.
Analogue ground connection.
This signal is taken low to put the PIC microcontroller into low voltage
programming mode.
Feedback taken from the CMX88x input 2 amplifier.
Feedback taken from the CMX88x microphone input amplifier.
TP3
TP4
TP5
TP6
TP7
TP8
TP9
TP10
TP11
TP12
TP13
WAITN
XFERN
DVSS
DVSS
DVSS
AVSS
AVSS
AVSS
PGMODE
INPUT_2_F
B
MIC_FB
Notes:
S/C = Short Circuit
O/C = Open circuit
Bi = Bi directional
©
2003 CML Microsystems Plc
9
UM8810/1
CMLMICRO [ CML MICROCIRCUITS ]
