CY7C43683-10AC 查看數據表（PDF） - Cypress Semiconductor
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CY7C43683-10AC Datasheet PDF : 29 Pages
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CY7C43643
CY7C43663
CY7C43683
Table 2. Flag Programming[2]
SPM
FS1/SEN
H
H
H
H
H
L
H
L
L
H
L
H
L
L
L
L
Table 3. Port A Enable Function
FS0/SD
H
L
H
L
L
H
H
L
MRS1/MRS2
↑
↑
↑
↑
↑
↑
↑
↑
X and Y Registers[3]
64
16
8
Parallel programming via Port A
Serial programming via SD
Reserved
Reserved
Reserved
CSA
W/RA
ENA
MBA
H
X
X
X
L
H
L
X
L
H
H
L
L
H
H
H
L
L
L
L
L
L
H
L
L
L
L
H
L
L
H
H
Table 4. Port B Enable Function
CLKA
X
X
↑
↑
X
↑
X
↑
A0–35 Outputs
In high-impedance state
In high-impedance state
In high-impedance state
In high-impedance state
Active, Mail2 register
Active, Mail2 register
Active, Mail2 register
Active, Mail2 register
Port Function
None
None
FIFO write
Mail1 write
None
None
None
Mail2 read (set MBF2 HIGH)
CSB
H
W/RB
X
ENB
X
MBB
X
CLKB
B0–35 Outputs
X In high-impedance state
L
L
L
X
X In high-impedance state
L
L
H
L
↑ In high-impedance state
L
L
H
H
↑ In high-impedance state
L
H
L
L
X Active, FIFO output register
L
H
H
L
↑ Active, FIFO output register
L
H
L
H
X Active, Mail1 register
L
H
H
H
↑ Active, Mail1 register
Table 5. FIFO Flag Operation (CY Standard and FWFT Modes)[2]
Port Function
None
None
None
Mail2 write
None
FIFO read
None
Mail1 read (set MBF1 HIGH)
Number of Words in FIFO Memory[4, 5, 6, 7]
Synchronized to CLKB Synchronized to CLKA
CY7C43643
CY7C43663
CY7C43683
EF/OR
AE
AF
FF/IR
0
0
0
L
L
H
H
1 TO X1
1 TO X1
1 TO X1
H
L
H
H
(X1+1) to [1024–(Y1+1)] (X1+1) to [4096–(Y1+1)] (X1+1) to [16384–(Y1+1)]
H
H
H
H
(1024–Y1) to 1023
(4096–Y1) to 4095
(16384–Y1) to 16383
H
H
L
H
1024
4096
16384
H
H
L
L
Notes:
3. X register holds the offset for AE; Y register holds the offset for AF.
4. X is the Almost Empty offset for FIFO used by AE. Y is the Almost Full offset for FIFO used by AF. Both X and Y are selected during a FIFO reset or port A
programming.
5. When a word loaded to an empty FIFO is shifted to the output register, its previous FIFO memory location is free.
6. Data in the output register does not count as a “word in FIFO memory”. Since in FWFT Mode, the first word written to an empty FIFO goes unrequested to the
output register (no read operation necessary), it is not included in the FIFO memory count.
7. The OR and IR functions are active during FWFT mode; the EF and FF functions are active in CY Standard Mode.
Document #: 38-06021 Rev. *B
Page 11 of 29
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