Silicon Laboratories ISOMODEM Si2401, Руководство пользователя

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Si2401
42 Preliminary Rev. 0.9
Reset settings = 0000_0000 (0x00)
S09 (INTS). Interrupt Status
Bit D7 D6 D5 D4 D3 D2 D1 D0
Name CD WOR PPD NVD RI CID OCD REV
Type R/W R/W R/W R/W R/W R/W R/W R/W
Bit Name Function
7 CD Carrier Detect (sticky).
Active high bit indicates carrier detected (equivalent to inverse of CD pin). Clears on :1
read.
6 WOR Wake-on-Ring (sticky).
Wake-on-ring has occurred. Clears on :I read.
5 PPD Parallel Phone Detect (sticky).
Parallel phone detected since last off-hook event. Clears on :I read.
4 NVD No Phone Line Detect (sticky).
No line phone detected. Clears on :I read.
3 RI Ring Indicator (sticky).
Active high bit when the Si2403 is on-hook, indicates ring event has occurred. Clears on
:I read.
2 CID Caller ID (sticky).
Caller ID preamble has been detected; data soon follows. Clears on :I read.
1 OCD Overcurrent Detect (sticky).
Overcurrent condition has occurred. Clears on :I read.
0 REV V.23 Reversal Detect (sticky).
V.23 reversal condition has occurred. Clears on :I read.