SI2404-D-FS Silicon Laboratories Inc, SI2404-D-FS Datasheet - Page 115
SI2404-D-FS
Manufacturer Part Number
SI2404-D-FS
Description
IC ISOMODEM SYSTEM-SIDE 16SOIC
Manufacturer
Silicon Laboratories Inc
Specifications of SI2404-D-FS
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
- Current page: 115 of 304
- Download datasheet (5Mb)
U77 is a bit-mapped register that controls parameters relating to intrusion detection and overcurrent detection. U77
resets to 0x401E with a power-on or manual reset (see Table 75).
Bits 15:12 (IST) set the delay between the time the modem goes off-hook and the intrusion detection algorithm
begins. This register has 250 ms increments, and the default value is 4 (1 sec).
Bit 11 (HOI) determines whether the host or modem responds to an intrusion. HOI = 0 (default) prevents the
modem from hanging-up in response to an intrusion without host intervention. In this case, the host monitors
U70 [2] (PPD) and takes the appropriate action when PPD is asserted indicating an intrusion. If HOI = 1, the
modem hangs up immediately and will not go off-hook and dial when an intrusion is detected without host
intervention. If %V
Bit 9 (AOC) = 0 (default) disables AutoOvercurrent. If enabled and an overcurrent condition is detected, the dc
termination switches to 800 , thus, reducing the current. If AOC = 0, the overcurrent condition is only reported by
U70 [3] (OCD).
Bits 8:0 (OHT) set the delay between the time the modem goes off-hook and LVCS is read for an overcurrent
condition. The default value for this register is 30 ms (see Table 75).
U78 is a bit-mapped register that controls intrusion detection blocking and intrusion suspend. U78 resets to 0x0000
with a power-on or manual reset (see Table 76).
Bits 15:14 (IB) controls intrusion blocking after dialing has begun. Table 76 defines the bit values and intrusion
blocking.
Bits 7:0 (IS) set the delay between the start of dialing and the start of the intrusion algorithm when IB = 10 (see
Table 76).
15:12
15:9
7:5
4:0
8:0
Bit
Bit
11
10
8
9
Reserved Read returns zero.
OHT[8:0]
OHSR
Name
Name
FACL
AOC
DCL
ACL
HOI
IST
N
commands are set, HOI also causes the LINE IN USE result code upon PPD interrupt.
Function
Off-Hook Sample Rate for Intrusion Detection (40 ms units).
(1 second default)
Force ACL.
0 = While off-hook, ACL is automatically updated with LVCS value.
1 = While off-hook, ACL saves previously written value.
Differential Current Level (3 mA units, 6 mA default)
Absolute Current Level (3 mA units, 0 mA default)
Function
Intrusion Settling Time (250 ms units) 1 second default.
Hang-Up On Intrusion.
0 = ISOmodem does not automatically hang up after an off-hook PPD interrupt.
1 = ISOmodem automatically hangs up after an off-hook PPD interrupt.
AutoOvercurrent.
0 = Disable.
1 = Enable.
Off-Hook Time (1 ms units) 30 ms default.
Table 75. U77 Bit Map
Table 74. U76 Bit Map
Rev. 1.3
AN93
115
Related parts for SI2404-D-FS
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
SOIC 16/C°/2400 BPS ISOMODEM WITH ERROR CORRECTION 16-PIN SYSTEM-SIDE - LEA
Manufacturer:
Silicon Laboratories Inc
Part Number:
Description:
TSSOP 24/C°/2400 BPS ISOMODEM WITH ERROR CORRECTION SYSTEM-SIDE
Manufacturer:
Silicon Laboratories Inc
Part Number:
Description:
TSSOP 24/I°/2400 BPS ISOMODEM WITH ERROR CORRECTION SYSTEM-SIDE
Manufacturer:
Silicon Laboratories Inc
Part Number:
Description:
RF Wireless Misc CONTACT SILICON LABS FOR AVAILABILITY
Manufacturer:
Silicon Laboratories Inc
Part Number:
Description:
IC ISOMODEM W/ERROR CORR 16SOIC
Manufacturer:
Silicon Laboratories Inc
Datasheet:
Part Number:
Description:
IC ISOMODEM W/ERROR CORR 24TSSOP
Manufacturer:
Silicon Laboratories Inc
Datasheet:
Part Number:
Description:
IC ISOMODEM W/ERROR CORR 24TSSOP
Manufacturer:
Silicon Laboratories Inc
Datasheet:
Part Number:
Description:
IC ISOMODEM SYSTEM-SIDE 24TSSOP
Manufacturer:
Silicon Laboratories Inc
Datasheet:
Part Number:
Description:
SMD/C°/SINGLE-ENDED OUTPUT SILICON OSCILLATOR
Manufacturer:
Silicon Laboratories Inc
Part Number:
Description:
Manufacturer:
Silicon Laboratories Inc
Datasheet:
Part Number:
Description:
N/A N/A/SI4010 AES KEYFOB DEMO WITH LCD RX
Manufacturer:
Silicon Laboratories Inc
Datasheet:
Part Number:
Description:
N/A N/A/SI4010 SIMPLIFIED KEY FOB DEMO WITH LED RX
Manufacturer:
Silicon Laboratories Inc
Datasheet:
Part Number:
Description:
N/A/-40 TO 85 OC/EZLINK MODULE; F930/4432 HIGH BAND (REV E/B1)
Manufacturer:
Silicon Laboratories Inc