SI3015-KS Silicon Laboratories Inc, SI3015-KS Datasheet - Page 40

• Manufacturer Part Number: SI3015-KS
• Description: IC SI2400 LINE-SIDE DAA 16SOIC
• Manufacturer: Silicon Laboratories Inc
• Type: Enhanced Global Direct Access Arrangementr

Specifications of SI3015-KS

• Package / Case: 16-SOIC (0.154", 3.90mm Width)
• Data Format: V.90
• Interface: Serial
• Voltage - Supply: 3.3 V ~ 5 V
• Mounting Type: Surface Mount
• Product: Modem Module
• Supply Current: 0.3 mA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Baud Rates: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Contains lead / RoHS non-compliant
• Other names: 336-1094

Si2400
7. Low Level DSP Control
Although not necessary for most applications, the DSP
low-level control functions are available for users with
very specific applications requiring direct DSP control.
7.1. DSP Registers
Several DSP registers are accessible through the
Si2400 microcontroller via S-registers SE5, SE6, SE7
and SE8. SE5 and SE6 are used as conduits to write
data to specific DSP registers and read status. SE8
defines the function of SE5 and SE6 depending on
whether they are being written to or read from. Care
must be exercised when writing to DSP registers. DSP
registers can only be written while the Si2400 is on-
hook and in the Command mode. Writing to any register
address not listed in Tables 24 and 25 or writing out-of-
range values is likely to cause the DSP to exhibit
unpredictable behavior.
The DSP register address is 16-bits wide and the DSP
data field is 14-bits wide. DSP register addresses and
data are written in hexadecimal. To write a value to a
DSP register, the register address is written then the
data is written. When SE8 = 0x00, SE5(DADL) is written
40
DSP Reg. Addr.
0x0002
0x0003
0x0004
0x0005
0x0006
0x0007
0x0008
0x0009
0x000A
0x000B
UDFD1 User-defined frequency detector 1. Center
UDFD2 User-defined frequency detector 2. Center
UDFD3 User-defined frequency detector 3. Center
UDFD4 User-defined frequency detector 4. Center
DTMT DTMF twist ratio (low/high), default = –2 dBm Level = 20log
UFRQ User-defined transmit tone frequency. See
Name
XMTL DAA modem full scale transmit level,
DTML DTMF high tone transmit level,
CPDL Call progress detect level (see Figure 13),
TGNL Tone generation level associated with TONC
default = –10 dBm
default = –5.5 dBm
register SE5 (SE8=0x02 (Write Only))
default = –43 dBm
frequency for detector 1.
frequency for detector 2.
frequency for detector 3.
frequency for detector 4.
(SE5 (SE8 = 0x02) Write Only Definition),
default = –10 dBm
Table 24. Low-Level DSP Parameters
Description
Rev. 1.3
with the low bits [7:0] of the DSP register address and
SE6 (DADH) is written with the high bits [15:8] of the
DSP address. When SE8 = 0x01, SE5 (DDL) is written
with the low bits [7:0] of the DSP data word
corresponding to the previously written address and
SE6 (DDH) is written with the high bits [15:8] of the data
word corresponding to the previously written address.
Example 1 below illustrates the proper procedure for
writing to DSP registers.
Example1: The user would like to program call
progress filter coefficient A2_k0 (0x15) to be 309
(0x135).
Host
ATSE8=00SE6=00SE5=15SE8=01SE6=01SE5=35SE8=00
In the command above, ATSE8=00 sets up registers
SE5 and SE6 as DSP address registers. SE6=00 sets
the high bits of the address, and SE5=15 sets the low
bits. SE8=01 sets up registers SE5 and SE6 as DSP
data registers for the previously written DSP address
(0x15). SE6=01 sets the high 6 bits of the 14-bit data
word, and SE5=35 sets the low 8 bits of the 14-bit data
word.
Level = 20log
–10 dBm
Level = 20log
–5.5 dBm
2 dB
f = (9600/512) UFRQ (Hz)
Level = 20log
–43 dBm
UDFD1 = 8192 cos (2 π f/9600)
UDFD2 = 8192 cos (2 π f/9600)
UDFD3 = 8192 cos (2 π f/9600)
UDFD4 = 8192 cos (2 π f/9600)
Level = 20log
– 10 dBm
Function
10
10
10
10
10
(XTML/4096)
(DTML/4868)
(DTMT/3277) –
(4096/CPDL)
(TGNL/2896)
Command:
Default
(dec)
4096
4868
3277
4096
4987
4987
2896
536
536
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