GuidePort: System Manual
27. November 2000
Seite 12
2.3
Receiver
2.3.1
Description
The
GuidePort Receiver
automatically reacts to the magnetic fields created by
Identifier Transmitters
(see 2.4). These Identifiers transmit a number which is related
to a certain audio event. When receiving this number, the receiver will transfer the
corresponding audio information to the Mollie System. Mollie then decides on the action
to be taken, for example to play the audio information. The GuidePort Receiver uses a
prestored assignment table for translating the numbers into the correct action.
2.3.2
Mollie Interface
The physical interface consists of:
Function
No. of lines
Direction
Analog:
Analog audio signals (L, R)
2
from GP receiver to Mollie
3.3 V power line, digital
1
from Mollie to GP receiver
5 V power line, analog
1
from Mollie to GP receiver
Analog ground
1 or more
Digital:
Parallel data
8
bi-directional
'Interrupt_1' (Active Low)
1
from Mollie to GP receiver
'Read/Write'
1
from Mollie to GP receiver
'Reset' (Active Low)
1
from Mollie to GP receiver
'Frame Clock'
1
from GP receiver to Mollie
'Interrupt_2'
1
from GP receiver to Mollie
Digital ground
1 or more
