PSB4596 Siemens Semiconductor Group, PSB4596 Datasheet - Page 80
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PSB4596
Manufacturer Part Number
PSB4596
Description
Analog Line Interface Solution ALIS
Manufacturer
Siemens Semiconductor Group
Datasheet
1.PSB4596.pdf
(104 pages)
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DIN:
DOUT:
10.3.2 Storage and Reading of Caller ID
The storage of the decoded caller ID is enabled after the first space following the mark
state. This event will be indicated by the caller ID interrupt. The maximum storage size
is 4096 bits. Start, stop-bit and check-sum decoding must be performed by the host.
Figure 37 CID Input Timing
When the RAM is read with the CAO command, the received bits will be sent from ALIS
in the following order:
b0 is the first caller ID data bit after the ’0’ which ends the marker sequence, b1 the
second, b2 the third etc. ...
The host can read the caller ID RAM at any time. Note that the read data may be
erroneous when caller ID data is received at the same time, as old and new data might
be mixed. However, the received caller ID bits are stored correctly in the RAM!
-> Try not to read the RAM while the caller ID is being received!
Semiconductor Group
TIP/RING
CAO-
com-
mand
id_byte
Ringing
First
channel
seizure
80
CID FSK
Analog Line Interface Solution
mark
state
DATA
PSB 4595 / PSB 4596
Modem Functions
Data Sheet 06.98
Second
Ringing
...