SI2414 SILABS [Silicon Laboratories], SI2414 Datasheet - Page 40

• Manufacturer Part Number: SI2414
• Manufacturer: SILABS [Silicon Laboratories]

Si2456/Si2433/Si2414
S-Registers
The S command allows reading (Sn?) or writing (Sn=x) the S-registers. The S-registers store values for functions
that typically are rarely changed, such as timers or counters, and the ASCII values of control characters, such as
carriage return. Table 20 summarizes the S-register set.
40
S-Register
(Decimal)
10
12
14
0
1
2
3
4
5
6
7
8
9
Automatic answer—Number of rings the Si2456/33/14
must detect before answering a call. 0 disables auto
answer.
Ring counter.
ESC code character.
Carriage return character.
Line feed character.
Backspace character.
Dial tone wait timer—Number of seconds the Si2456/
33/14 waits before blind dialing. Only applicable if blind
dialing is enabled (X0, X1, X3).
Carrier wait timer—Number of seconds the Si2456/33/
14 waits for carrier before timing out. This register also
sets the number of seconds the modem waits for ring-
back when originating a call before hanging up.
Dial pause timer for , and < dial command modifiers.
Carrier presence timer—Time after a loss of carrier
that a carrier must be detected before reactivating
DCD. S9 is referred to as “carrier loss debounce time.”
Carrier loss timer—Time the carrier must be lost
before the Si2456/33/14 disconnects. Setting 255 dis-
ables disconnect entirely. If S10 is less than S9, even
a momentary loss of carrier causes a disconnect.
Escape code guard timer—Minimum guard time
required before and after “+++” for the Si2456/33/14 to
recognize a valid escape sequence.
Wait for dial tone delay value (in relation to the W dial
modifier). Starts when “W” is executed in the dial
string.
Function
Table 20. S-Register Description
Definition
Rev. 0.9
(Decimal)
13 (CR)
Default
08 (BS)
10 (LF)
43 (+)
02
60
02
06
14
50
12
0
0
Range
0–255
0–255
0–255
0–255
0–255
0–255
0–255
0–255
0–255
1–255
1–255
1–255
0–255
0.02 second
0.1 second
0.1 second
seconds
seconds
seconds
seconds
ASCII
ASCII
Rings
Rings
ASCII
ASCII
Units