GL422 Genesys Logic, GL422 Datasheet - Page 24

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GL422

Manufacturer Part Number
GL422
Description
USB 2.0 +sd/mmc-controller Combo Solution
Manufacturer
Genesys Logic
Datasheet
QFN56
Pin#
4.6.4 Flash Interface
©2000-2006 Genesys Logic Inc. - All rights reserved.
NC
NC
31
32
33
34
30
35
29
19
20
21
22
The flash interface is used to access AND/NAND flash, defined as Table 4.4. It is also shared with USB test
interface, refers to Table 4.7.
VFBGA
Pin#
G5
54
C4
B4
A5
B5
A4
C5
B3
G4
D6
E5
F3
F4
Pin Name
BUSY_
CE0_
CE1_
WE_
WP_
CLE
ALE
DA0
DA1
DA2
DA3
RE_
GL422/GL423 USB 2.0 +SD/MMC-controller Combo Solution
Pad#
Table 4.4 – Flash Interface
35
36
37
65
66
67
68
64
69
63
71
44
45
46
47
PAD_HDATA6
PAD_UDATA7
PAD_HDATA7
PAD_BUSY_B
PAD_CE0_B
PAD_CE1_B
Pad Name
PAD_WE_B
PAD_WP_B
PAD_RE_B
PAD_ALE
PAD_DA0
PAD_DA1
PAD_DA2
PAD_DA3
PAD_CLE
Type
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
MMC mode: HDATA6 from/to
HOST.
(Double Bonding)
MMC mode: HDATA7 from/to USB
reader.
(Double Bonding)
MMC mode: HDATA7 from/to
HOST.
(Double Bonding)
‘0’ for FLASH chip 0 to select active
(low-active).
‘0’ for FLASH chip 1 to select active
(low-active).
FLASH command latch enable
FLASH address latch enable
FLASH read enable (low active)
FLASH write enable (low active)
FLASH ready when high, busy when
low.
FLASH write protect (low active)
FLASH bus bit0
FLASH bus bit1
FLASH bus bit2
FLASH bus bit3
Description
Page 24

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