DM300004-1 Microchip Technology, DM300004-1 Datasheet - Page 82

• Manufacturer Part Number: DM300004-1
• Description: BOARD DEMO DSPICDEM.NET 1
• Manufacturer: Microchip Technology
• Series: dsPIC™r
• Type: Microcontrollerr

Specifications of DM300004-1

• Contents: *
• Mcu Supported Families: DsPIC30F
• Supported Devices: DsPIC30F6014
• For Use With: PIC30F5013
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: FCC/JATE PSTN, Ethernet NIC
• Lead Free Status / RoHS Status: na, Lead free / RoHS Compliant
• Other names: DM300004-1R; DM300004-1R

PICDEM.net™ 1 and dsPICDEM.net 2 Connectivity Dev Board User’s Guide
6.6
DS51471A-page 78
DESCRIPTION OF dsPIC30F SOFT MODEM
The Microchip data modem library includes ITU-T compliant algorithms for V.21, V.22,
V.22bis, V.23, V.32 and V.32bis modem recommendations as well as Bell standard 103.
These are the important parameters:
• V.21, V.23 and Bell 103 are Frequency Shift Keying (FSK) modems.
• V.32, V.32bis and V.22bis are Quadrature Amplitude Modulated (QAM) modems.
• V.22 is a Phase Shift Keyed (PSK) modem.
• V.21, V.22, V.22bis, V.32 and V.32bis are two-wire, full-duplex modems.
• V.23 is full-duplex when it operates with a 75-bps backwards channel.
• V.22bis includes fallback to V.22, V.23 and V.21 standards.
• V.32bis optionally falls back to V.22bis, V.22, V.23 and V.21 standards.
These key parameters are further detailed in Table 6-1.
TABLE 6-1:
V.21/Bell 103
V.22/V.22bis
V.23
V.32
v.32BIS
v.42
DP + V.42 API
AT Command Set
Note 1:
Algorithm
(4)
2:
3:
4:
Data pump modules, V.21, V.22, V.22bis, V.23, V.32, V.32bis and Bell 103 are
implemented in Assembly language. V.42, Data Pump and AT Command APIs are
implemented in C language.
The program/data memory usage for the V-series data pumps is NOT cumulative,
due to the sharing of components internally.
Memory size does not account for application which combines data pump, V.42 and
AT commands (if required).
V.21/Bell 103 and V.23 data pumps do not require V.42.
(4)
(1)
SOFT MODEM FEATURES AND PERFORMANCE
Data Rate
14400
(bps)
1200
2400
1200
9600
4800
1200
9600
7200
4800
300
600
Performance
Half/Full
Duplex
Half
Full
Full
Full
Full
n/a
n/a
n/a
Modulation
QAM/TCM
QAM/TCM
PSK/QAM
Data
FSK
FSK
Memory
Program
 2004 Microchip Technology Inc.
13
22
15
31
36
14
7
7
(2)
(Kbytes)
Data
0.15
1.0
1.7
1.0
3.2
3.6
2.0
1.2
MIPS
4.5
4.5
1.5
12
15
7
-
-