GL422/GL423 USB 2.0 +SD/MMC-controller Combo Solution
4.6.3 Card Interface
VFBGA
Table 4.3 – Card Interface
QFN56
54
Pin Name Pad#
Pad Name
Type
Description
Pin#
Pin#
Controller clock signal from USB
reader to card (rising edge)
Controller clock signal from HOST
Only to card (rising edge)
SD/MMC mode: HCMD from/to
USB reader
11
H5
J5
UCLK
HCLK
26
27
PAD_UCLK
PAD_HCLK
B
B
12
19
20
21
29
PAD_UCMD
PAD_HCMDx
PAD_HCMDy
PAD_UDATA0
B
B
B
B
SPI mode: Data-in signal from USB
reader(Double Bonding)
SD/MMC mode: HCMD from/to
HOST
8
J4
H3
J6
UCMD
SPI mode: Data-in signal from
HOST
(Double Bonding)
SD/MMC mode: HCMD from/to
HOST
9
HCMD
SPI mode: Data-in signal from
HOST
SD/MMC mode: HDATA0 from/to
USB reader
SPI mode: Data-out signal to USB
reader
(Double Bonding)
14
HDATA0
SD/MMC mode: HDATA0 from/to
HOST.
30
38
PAD_HDATA0
PAD_UDATA1
B
B
SPI mode: Data-out signal to HOST
(Double Bonding)
SD/MMC mode: HDATA1 from/to
USB reader.
16
F6
HDATA1
SPI mode: not connected
(Double Bonding)
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