si2439-a-gm Silicon Laboratories, si2439-a-gm Datasheet - Page 55

• Manufacturer Part Number: si2439-a-gm
• Description: V.92 And V.34 Isomodem With Global Daa
• Manufacturer: Silicon Laboratories

7. Pin Descriptions: Si2494/39
Pin #
10
11
1
2
3
4
5
6
7
8
9
Pin Name
CLKOUT
EESDO
FSYNC
GPIO1
EESDI
VREG
GND
SDO
VDD
SDI
NC
General Purpose Input Output #1.
Frame Sync/Data Bit.
Frame Sync output to codec in serial mode.
Clock Output.
Clock output in serial mode.
No Connect.
Digital Supply Voltage.
Provides the 3.3V supply voltage to the Si2494/39.
Ground.
Connects to the system digital ground.
Regulator Voltage Reference.
Connects to an external capacitor and serves as the reference for the internal
voltage regulator.
Serial Data In.
Serial Data In (to codec) output in serial mode.
Serial Data Out.
Serial Data Output (from codec) input in serial mode.
EEPROM Serial Data Input.
Serial Data In to SPI EEPROM.
EEPROM Serial Data Output.
Serial Data Out from SPI EEPROM.
CLKOUT
Table 16. Si2494/39 Pin Descriptions
EESDO
FSYNC
GPIO1
EESDI
VREG
EECS
GND
SDO
VDD
N/C
SDI
10
11
12
1
2
3
4
5
6
7
8
9
38
13
37 36 35 34 33 32
14
Si2494/39
5 x 7 mm
15
QFN
16
17
Rev. 1.0
18
19
31
30
29
28
27
26
25
24
23
22
21
20
GPIO25, D3
GPIO24, D4
ESC, D5
DCD, D6
N/C
VDD
GND
RTS, SS, D7
TXD, MOSI, WR
RXD, MISO, RD
CTS, SCLK, CS
GPIO11, A0
Description
Si2494/39
55