參數(shù)資料
型號(hào)： GT3200-JN
廠商： STANDARD MICROSYSTEMS CORP
元件分類(lèi)： 網(wǎng)絡(luò)接口
英文描述： USB2.0 PJY IC
中文描述： DATACOM, INTERFACE CIRCUIT, PQFP64
封裝： 7 X 7 MM, 1.40 MM HEIGHT, TQFP-64
文件頁(yè)數(shù)： 12/51頁(yè)
文件大小： 1462K
代理商： GT3200-JN
USB2.0 PHY IC
Revision 1.3 (10-05-04)
7
SMSC GT3200, SMSC USB3250
DATASHEET
Note 4.1
A Ferrite Bead (with DC resistance <.5 Ohms) is recommended for filtering between both
the VDD3.3 and VDDA3.3 supplies and the VDD1.8 and VDDA1.8 Supplies. See
Figure 8.9 Application Diagram for 64-pin TQFP Package on page 40
.
Note 4.2
56-pin QFN package will down-bond all VSS and VSSA to exposed pad under IC.
Exposed pad must be connected to solid GND plane on printed circuit board.
Table 4.3 USB I/O Signals
NAME
DIRECTION
ACTIVE
LEVEL
DESCRIPTION
DP
I/O
N/A
USB Positive Data Pin
.
DM
I/O
N/A
USB Negative Data Pin
.
Table 4.4 Biasing and Clock Oscillator Signals
NAME
DIRECTION
ACTIVE
LEVEL
DESCRIPTION
RBIAS
Input
N/A
External 1% bias resistor
. Requires a 12K
resistor to ground.
Used for setting HS transmit current level and on-chip termination
impedance.
XI/XO
Input
N/A
External crystal
. 12MHz crystal connected from XI to XO.
Table 4.5 Power and Ground Signals
NAME
DIRECTION
ACTIVE
LEVEL
DESCRIPTION
VDD3.3
N/A
N/A
3.3V Digital Supply
. Powers digital pads. See
Note 4.1
VDD1.8
N/A
N/A
1.8V Digital Supply
. Powers digital core.
VSS
N/A
N/A
Digital Ground
. See
Note 4.2
VDDA3.3
N/A
N/A
3.3V Analog Supply
. Powers analog I/O and 3.3V analog
circuitry.
VDDA1.8
N/A
N/A
1.8V Analog Supply
. Powers 1.8V analog circuitry. See
Note 4.1
VSSA
N/A
N/A
Analog Ground
. See
Note 4.2
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