SI2400-FS Silicon Laboratories Inc, SI2400-FS Datasheet - Page 67

• Manufacturer Part Number: SI2400-FS
• Description: 2400 BPS ISOMODEM EM SYSTEM-SIDE
• Manufacturer: Silicon Laboratories Inc
• Type: Chipsetr

Specifications of SI2400-FS

• Package / Case: 16-SOIC (3.9mm Width)
• Data Format: V.21, V.22, V.23, Bell 103, Bell 212A
• Baud Rates: 2.4k
• Interface: UART
• Voltage - Supply: 3 V ~ 5.25 V
• Mounting Type: Surface Mount
• Product: Modem Module
• Supply Voltage (min): 3 V
• Supply Current: 28 mA
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 336-1166 - BOARD EVAL FOR SI2400 ISOMODEM
• Lead Free Status / Rohs Status: Supplier Unconfirmed

SE4 (CF5). Chip Functions 5
Reset settings = 0000_0000
*Note: GPE and TRSP are mutually exclusive. Only one can be set at any one time, and they override the settings in registers
Name
Type
Bit
5:4
Bit
7
6
3
2
1
0
GPIO2 and GPIO1. Once TXD2 and RXD2 are enabled through TRSP
longer function and pins TXD2 and RXD2 control the Si2400. This feature allows a second microcontroller to control
the Si2400.
NBCK
Reserved
D7
TRSP*
R
Name
NBCK
SBCK
GPE*
APO
DRT
SBCK
D6
R
9600 Baud Clock (Read Only).
600 Baud Clock (Read Only).
Data Routing (See Figure 10).
00 = Data mode, DSP output transmitted to line, line received by DSP input.
01 = Voice mode, selected AIN transmitted to line, line received by AOUT.
10 = Loopback mode, RXD through microcontroller (DSP) to TXD. AIN looped to AOUT.
11 = Codec mode, data from DSPOUT to AOUT, AIN to DSPIN.
GPIO1 Enable.
0 = Disable.
1 = Enable GPIO1 to be HDLC end-of-frame flag.
Read returns zero.
Analog Power On.
0 = Disable.
1 = Power on analog ADC and DAC.
TXD2/RXD2 Serial Port.
0 = Disable.
1 = Enable TXD2/RXD2 serial port so that RXD2 is GPIO1 and TXD2 is GPIO2.
b
(0x00)
D5
DRT
R/W
D4
GPE
R/W
D3
Rev. 1.3
D2
Function
APO
R/W
D1
=
1
b
, the primary serial port TXD and RXD no
TRSP
R/W
D0
Si2400
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