SI2438FT18-EVB Silicon Laboratories Inc, SI2438FT18-EVB Datasheet - Page 81
![no-image](/images/manufacturer_photos/0/6/609/silicon_laboratories_inc_sml.jpg)
SI2438FT18-EVB
Manufacturer Part Number
SI2438FT18-EVB
Description
BOARD EVAL SI2438+SI3018 24PIN
Manufacturer
Silicon Laboratories Inc
Datasheet
1.SI3050-E-FM.pdf
(128 pages)
Specifications of SI2438FT18-EVB
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
- Current page: 81 of 128
- Download datasheet (888Kb)
Register 24. Ring Validation Control 3
Reset settings = 0001_1001
Register 25. Resistor Calibration
Reset settings = xx0x_xxxx
Bit
5:0
Bit
3:0
7
6
7
6
5
4
Name
Name
Type
Type
Bit
Bit
RCAL[3:0] Always write back the value read. Result of resistor calibration. Do not modify this value.
Reserved
RCALM
RCALS
RCALD
Reserved
Name
RAS[5:0]
RNGV
Name
RCALS
RNGV
R/W
D7
D7
R
Resistor Auto Calibration.
0 = Resistor calibration is not in progress.
1 = Resistor calibration is in progress.
Manual Resistor Calibration.
0 = No calibration.
1 = Initiate manual resistor calibration. (After a manual calibration has been initiated, this bit
must be cleared within 1 ms.)
Resistor Calibration Disable.
0 = Internal resistor calibration enabled.
1 = Internal resistor calibration disabled.
This bit can be written to a 0 or 1.
Ring Validation Enable.
0 = Ring validation feature is disabled.
1 = Ring validation feature is enabled in both normal operating mode and low-power
mode.
This bit must always be written to 0.
Ring Assertion Time.
These bits set the minimum ring frequency for a valid ring signal. During ring qualification,
a timer is loaded with the RAS[5:0] field upon a TIP/RING event and decrements at a reg-
ular rate. If a second or subsequent TIP/RING event occurs after the timer has timed out
then the frequency of the ring is too low and the ring is invalidated. The difference between
RAS[5:0] and RMX[5:0] identifies the minimum duration between TIP/RING events to qual-
ify as a ring, in binary-coded increments of 2.0 ms (nominal). A TIP/RING event typically
occurs twice per ring tone period. At 20 Hz, TIP/RING events would occur every
1/(2 x 20 Hz) = 25 ms. To calculate the correct RAS[5:0] value for a frequency range
[f_min, f_max], the following equation should be used:
RCALM
R/W
D6
D6
RCALD
R/W
D5
D5
Rev. 1.4
RAS 5:0
D4
D4
Function
Function
Si3050 + Si3011/18/19
------------------------------------------ -
2 f_min
D3
D3
RAS[5:0]
1
R/W
2 ms
D2
D2
RCAL[3:0]
R/W
D1
D1
D0
D0
81
Related parts for SI2438FT18-EVB
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![SI2438-A-FT](/images/manufacturer_photos/0/6/609/silicon_laboratories_inc_tmb.jpg)
Part Number:
Description:
IC ISOMODEM FAX SYS-SIDE 24TSSOP
Manufacturer:
Silicon Laboratories Inc
Datasheet:
![SI2438-A-FTR](/images/manufacturer_photos/0/6/609/silicon_laboratories_inc_tmb.jpg)
Part Number:
Description:
TSSOP 24/0 TO 70 OC/33.6 KBPS DATA/FAX/VOICE ISOMODEM SYSTEM-SIDE - LEAD-FR
Manufacturer:
Silicon Laboratories Inc
![SI2438-A-GT](/images/manufacturer_photos/0/6/609/silicon_laboratories_inc_tmb.jpg)
Part Number:
Description:
IC ISOMODEM FAX SYS-SIDE 24TSSOP
Manufacturer:
Silicon Laboratories Inc
Datasheet:
![500SAAB8M00000ACF](/images/manufacturer_photos/0/6/609/silicon_laboratories_inc_tmb.jpg)
Part Number:
Description:
SMD/C/SINGLE-ENDED OUTPUT SILICON OSCILLATOR
Manufacturer:
Silicon Laboratories Inc
![SI3210MFT](/images/manufacturer_photos/0/6/609/silicon_laboratories_inc_tmb.jpg)
Part Number:
Description:
Manufacturer:
Silicon Laboratories Inc
Datasheet:
![4010-DAAKF_868](/images/manufacturer_photos/0/6/609/silicon_laboratories_inc_tmb.jpg)
Part Number:
Description:
N/A N/A/SI4010 AES KEYFOB DEMO WITH LCD RX
Manufacturer:
Silicon Laboratories Inc
Datasheet:
![4010-DASKF_868](/images/manufacturer_photos/0/6/609/silicon_laboratories_inc_tmb.jpg)
Part Number:
Description:
N/A N/A/SI4010 SIMPLIFIED KEY FOB DEMO WITH LED RX
Manufacturer:
Silicon Laboratories Inc
Datasheet:
![4432-SEB1 C 915](/images/manufacturer_photos/0/6/609/silicon_laboratories_inc_tmb.jpg)
Part Number:
Description:
N/A/-40 TO 85 OC/EZLINK MODULE; F930/4432 HIGH BAND (REV E/B1)
Manufacturer:
Silicon Laboratories Inc
![4432-SEB1 D 470](/images/manufacturer_photos/0/6/609/silicon_laboratories_inc_tmb.jpg)
Part Number:
Description:
EZLink Module; F930/4432 Low Band (rev e/B1)
Manufacturer:
Silicon Laboratories Inc
![4460-TCE10D434-EK](/images/manufacturer_photos/0/6/609/silicon_laboratories_inc_tmb.jpg)
Part Number:
Description:
I/4460 10 DBM RADIO TEST CARD 434 MHZ
Manufacturer:
Silicon Laboratories Inc
![4461-TSQ14D868-EK](/images/manufacturer_photos/0/6/609/silicon_laboratories_inc_tmb.jpg)
Part Number:
Description:
I/4461 14 DBM RADIO TEST CARD 868 MHZ
Manufacturer:
Silicon Laboratories Inc
![4463-TCE20C460-EK](/images/manufacturer_photos/0/6/609/silicon_laboratories_inc_tmb.jpg)
Part Number:
Description:
I/4463 20 DBM RFSWITCH RADIO TEST CARD 460 MHZ
Manufacturer:
Silicon Laboratories Inc
![4463-TCE20C868-EK](/images/manufacturer_photos/0/6/609/silicon_laboratories_inc_tmb.jpg)
Part Number:
Description:
I/4463 20 DBM RADIO TEST CARD 868 MHZ
Manufacturer:
Silicon Laboratories Inc