GL422/GL423 USB 2.0 +SD/MMC-controller Combo Solution
4.6 PAD/PIN Descripton
4.6.1 USB Interface
Table 4.1- USB Interface
VFBG
QFN56
A54
Pin Name Pad# Pad Name
Type
Description
Pin#
Pin#
Analog 3.3V power
96
97
AVDD2
AVDD1
RREF
P
P
A
P
P
(Double Bonding)
Analog 3.3V power
(Double Bonding)
Reference resistor, normal 680ohm
(1%) between RREF and GND
Analog ground
46
C2
C3
E3
AVDD
RREF
AGND
47
48
98
99
AGND2
AGND1
(Double Bonding)
Analog ground
100
(Double Bonding)
USB D-
49
50
D1
D2
D3
E3
DM
DP
101
102
103
104
105
DM
DP
B
B
P
P
P
USB D+
51
AVDD
AGND
¾
AVDD3
AGND3
VBUS
Analog 3.3V power
Analog ground
52
NC
NC
(No Bonding)
Digital ground.
53
53
E3
E3
NC
E3
AGND
AGND
¾
106
107
108
109
DGND2
DGND1
DVDD1
AVSS2
P
P
P
P
(Tri-bonding)
Digital ground.
(Tri-bonding)
Digital power
NC
53
(No Bonding)
Analog ground
AGND
(Tri-bonding)
54
55
E1
E2
XI
110
111
XI
I
Crystal driver input
Crystal driver output
Analog 3.3V power
(Double Bonding)
(No Bonding)
XO
XO
O
56
-
F1
-
AVDD
-
112
-
AVDD2
P
-
CUTCELL
©2000-2006 Genesys Logic Inc. - All rights reserved.
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