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| 型号： | SI2493FS18-EVB |
| 厂商： | Silicon Laboratories Inc |
| 文件页数： | 10/36页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL SI2493 + SI3018 16PIN |
| 标准包装： | 1 |
| 系列： | ISOmodem® |
| 主要目的： | 电信，数据采集装置（DAA） |
| 已用 IC / 零件： | Si2493 |
| 已供物品： | 板，CD |
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Si2493/57/34/15/04
Global ISOmodem-EVB
VDD
N O T E : D6 (PIN 4) MUST NOT HAVE PULLDOWN RESISTOR
C50
U3
C52
DCDb
ESC
AOUT
INTb
RIb
RTSb
RXD
TXD
CTSb
24
23
22
15
4
16
17
18
3
8
9
10
11
EECLK/D5
DCD/D4
ESC/D3
AOUT/INT
D6
INT/D0
RI/D1
EESD/D2
CLKOUT/EECS/A0
RTS/D7
RXD/RD
TXD/WR
CTS/CS
CLKIN/XTALI
XTALO
C1A
C2A
1
2
14
13
XTALI
XTALO
C1A
C1B
RESETb
12
RESET
Si2493/57/34/15/04
C51
C53
VDD
R61
C66
0.1 uF
0
C68
0 . 1 uF
VDD
SPKR_R
MIC_BIAS
HDST
1
2
3
4
5
SPKR_R
MIC_BIAS
HDST
SDI
SDO
SPKR_L
LINEO
GND
VA
VD
16
15
14
13
12
SPKR_L
LINEO
R62
47 k
R63
47 k
6
7
FSYNC
MCLK
LINEI
MIC_IN
11
10
LINEI
M I C _IN
8
SCLK
RESET
9
Si3000
Figure 10. Circuit Connection between the Si2493/57/34/15/04 and the Si3000
To use voice mode register U71 and data memory location 0x0059 must be properly configured.
Setting data memory 0x0059 = 0x0001 enables the Si24XX TDMA interface. When U71 is set to the value 0x0011
a 16-bit voice sample will be transmitted from the Si3000 through the Si2493/57/34/15/04 and DAA to the remote
device. Likewise, an analog signal from the remote device will pass through the DAA where it is converted to a 16-
bit voice sample, the Si24XX and finally the Si3000 where it is converted back to the analog receive signal.
In this example, the Si3000 has its digital TDMA interface configured as the Slave Serial Mode by adding a 50 k ?
pull-down resistor to SDO pin and a pull-up 50 k ? resistor to SCLK pin. In this mode, the Si3000’s MCLK is driven
by the 2048 kHz clock from Si2493/57/34/15/04. The FSYNC has an 8 kHz pulse input. The bit clock is 2048/
8 = 256 bits per frame sync. Refer to the Si3000 documentation for further details.
To send control information to the Si3000, the Si2493/57/34/15/04 modem chip provides a PCM control port
0x004B that allows the user to send control words across by using the AT memory write command. See Table 4. for
details. Wait for the “OK” (approximately 300 ms after each command). When a connection is established, the “AT.”
command is used to generate the DTMF tone of a number; For example, AT.3<CR> will generate a number 3
DTMF tone without the need for an external DTMF generator. See “Voice Mode Example” for details.
10
Rev. 0.6
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相关代理商/技术参数 |
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| Si2494-A-FM18-EVB | 功能描述:网络开发工具 38pin Si2494+ Si3018 ISOmodem Eval Board RoHS:否 制造商:Rabbit Semiconductor 产品:Development Kits 类型:Ethernet to Wi-Fi Bridges 工具用于评估:RCM6600W 数据速率:20 Mbps, 40 Mbps 接口类型:802.11 b/g, Ethernet 工作电源电压:3.3 V |
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