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CY7C68034-56LTXC Datasheet(PDF) 4 Page - Cypress Semiconductor

Part # CY7C68034-56LTXC
Description  EZ-USB NX2LP-Flex Flexible USB NAND Flash Controller
Download  34 Pages
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Manufacturer  CYPRESS [Cypress Semiconductor]
Direct Link  http://www.cypress.com
Logo CYPRESS - Cypress Semiconductor

CY7C68034-56LTXC Datasheet(HTML) 4 Page - Cypress Semiconductor

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CY7C68033, CY7C68034
Document #: 001-04247 Rev *F
Page 4 of 34
Buses
The NX2LP-Flex features an 8- or 16-bit ‘FIFO’ bidirectional data bus, multiplexed on I/O ports B and D.
The default firmware image implements an 8-bit data bus in GPIF Master mode. It is recommended that additional interfaces added
to the default firmware image use this 8-bit data bus.
Enumeration
During the startup sequence, internal logic checks for the presence of NAND Flash with valid firmware. If valid firmware is found, the
NX2LP-Flex loads it and operates according to the firmware. If no NAND Flash is detected, or if no valid firmware is found, the
NX2LP-Flex uses the default values from internal ROM space for manufacturing mode operation. The two modes of operation are
described in the section Normal Operation Mode and Manufacturing Mode on page 5.
Table 1. Special Function Registers
x
8x
9x
Ax
Bx
Cx
Dx
Ex
Fx
0
IOA
IOB
IOC
IOD
SCON1
PSW
ACC
B
1SP
EXIF
INT2CLR
IOE
SBUF1
2DPL0
MPAGE
INT4CLR
OEA
3DPH0
OEB
4
DPL1
OEC
5
DPH1
OED
6
DPS
OEE
7PCON
8
TCON
SCON0
IE
IP
T2CON
EICON
EIE
EIP
9
TMOD
SBUF0
ATL0
AUTOPTRH1
EP2468STAT
EP01STAT
RCAP2L
BTL1
AUTOPTRL1
EP24FIFOFLGS
GPIFTRIG
RCAP2H
CTH0
RESERVED
EP68FIFOFLGS
TL2
DTH1
AUTOPTRH2
GPIFSGLDATH
TH2
E
CKCON
AUTOPTRL2
GPIFSGLDATLX
F
RESERVED
AUTOPTRSET-UP
GPIFSGLDATLNOX
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