參數(shù)資料
型號: SI2439-A-GM
廠商: Silicon Laboratories Inc
文件頁數(shù): 51/70頁
文件大小: 0K
描述: IC ISOMODEM 33.6KBPS 38-QFN
標(biāo)準(zhǔn)包裝: 364
系列: *
Si2494/39
Rev. 1.0
55
7. Pin Descriptions: Si2494/39
Table 16. Si2494/39 Pin Descriptions
Pin #
Pin Name
Description
1GPIO1
General Purpose Input Output #1.
2
FSYNC
Frame Sync/Data Bit.
Frame Sync output to codec in serial mode.
3CLKOUT
Clock Output.
Clock output in serial mode.
4NC
No Connect.
5VDD
Digital Supply Voltage.
Provides the 3.3V supply voltage to the Si2494/39.
6GND
Ground.
Connects to the system digital ground.
7VREG
Regulator Voltage Reference.
Connects to an external capacitor and serves as the reference for the internal
voltage regulator.
8SDI
Serial Data In.
Serial Data In (to codec) output in serial mode.
9SDO
Serial Data Out.
Serial Data Output (from codec) input in serial mode.
10
EESDI
EEPROM Serial Data Input.
Serial Data In to SPI EEPROM.
11
EESDO
EEPROM Serial Data Output.
Serial Data Out from SPI EEPROM.
N/C
GPIO24, D4
GPIO25, D3
GP
IO
16,
D
2
GP
IO
17,
D
1
GP
IO
18,
D
0
IN
T
CL
KI
N/
XT
A
L
I
XTAL
O
N/C
EE
CL
K
VDD
ESC, D5
DCD, D6
GND
N/C
RTS, SS, D7
TXD, MOSI, WR
RXD, MISO, RD
CTS, SCLK, CS
C1
A
C2
A
AO
UT
b
RI
EECS
FSYNC
CLKOUT
VDD
GND
RES
E
T
SDI
SDO
EESDI
EESDO
Si2494/39
5 x 7 mm
QFN
31
38
1
2
3
4
5
6
7
8
9
10
11
19
18
17
16
15
14
13
12
30
29
28
27
26
25
24
23
22
21
20
GPIO1
GPIO11, A0
VREG
AO
UT
37 36 35 34 33 32
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