si2401 Silicon Laboratories, si2401 Datasheet - Page 44

• Manufacturer Part Number: si2401
• Description: V.22bis Isomodem With Integrated Global Daa
• Manufacturer: Silicon Laboratories

Si2401
Reset settings = 0000_0000 (0x00)
44
S09 (INTS). Interrupt Status
Bit
7
6
5
4
3
2
1
0
Name
Type
Bit
Name
WOR
OCD
NVD
PPD
REV
CID
CD
RI
R/W
CD
D7
Carrier Detect (sticky).
Active high bit indicates carrier detected (equivalent to inverse of CD pin). Clears on :1
read.
Wake-on-Ring (sticky).
Wake-on-ring has occurred. Clears on :I read.
Parallel Phone Detect (sticky).
Parallel phone detected since last off-hook event. Clears on :I read.
No Phone Line Detect (sticky).
No line phone detected. Clears on :I read.
Ring Indicator (sticky).
Active high bit when the Si2403 is on-hook, indicates ring event has occurred. Clears on
:I read.
Caller ID (sticky).
Caller ID preamble has been detected; data soon follows. Clears on :I read.
Overcurrent Detect (sticky).
Overcurrent condition has occurred. Clears on :I read.
V.23 Reversal Detect (sticky).
V.23 reversal condition has occurred. Clears on :I read.
WOR
R/W
D6
PPD
R/W
D5
Rev. 1.0
NVD
R/W
D4
Function
R/W
D3
RI
R/W
CID
D2
OCD
R/W
D1
REV
R/W
D0