參數(shù)資料
型號(hào)： LF3304QC15
廠商： LOGIC DEVICES INC
元件分類： 存儲(chǔ)器
英文描述： Circular Connector; Body Material:Aluminum; Series:PT02; No. of Contacts:23; Connector Shell Size:16; Connecting Termination:Crimp; Circular Shell Style:Box Mount Receptacle; Circular Contact Gender:Socket; Insert Arrangement:16-99
中文描述： SPECIALTY MEMORY CIRCUIT, PQFP100
封裝： PLASTIC, QFP-100
文件頁數(shù)： 4/12頁
文件大?。?/td> 130K
代理商： LF3304QC15
DEVICES INCORPORATED
LF3304
Dual Line Buffer/FIFO
4
Video Imaging Products
08/16/2000–LDS.3304-F
LDB — RAM Array B Load
When LDB is LOW, data on BIN
11-0
is
latched in the LF3304 on the rising
edge of WCLKB.
WENA — Write Enable A
If WENA is LOW, data on AIN
11-0
is
written to the device on the rising edge
of WCLKA. When RAM Array A is
full, WENA is ignored.
RENA — Read Enable A
If RENA is LOW, data from RAM Array
A is read and presented on AOUT
11-0
after
t
D
has elapsed from the rising
edge of RCLKA if the output port is
enabled. If RENA goes HIGH, the last
value loaded in the RAM Array A
output register will remain unchanged.
When RAM Array A is empty, RENA is
ignored.
WENB — Write Enable B
If WENB is LOW, data on BIN
11-0
is
written to the device on the rising edgle
of WCLKB. When RAM Array B is full,
WENB is ignored.
RENB — Read Enable B
If RENB is LOW, data from RAM Array
B is read and presented on BOUT
11-0
after tD has elapsed from the rising
edge of RCLKB if the output port is
enabled. If RENB goes HIGH, the last
value loaded in the RAM Array B
output register will remain unchanged.
When RAM Array B is empty, RENB is
ignored.
RWA — Reset Write A
The write address pointer is reset to the
first physical location when RWA is set
LOW. After power up, the LF3304
requires a Reset Write for initialization
because the write address pointer is not
defined at that time.
RRA — Reset Read A
The read address pointer is reset to the first
physical location when RRA is set LOW.
After power up, the LF3304 requires a Reset
Read for initialization because the read
address pointer is not defined at that time.
RWB — Reset Write B
See RWA Description.
RRB — Reset Read B
See RRA description.
OEA — Output Enable A
When OEA is LOW, AOUT
11-0
is
enabled for output. When OEA is
HIGH, AOUT
11-0
is placed in a high-
impedence state. The flag outputs are
not affected by OEA.
OEB — Output Enable B
When OEB is LOW, BOUT
11-0
is
enabled for output. When OEB is
HIGH, BOUT
11-0
is placed in a high-
impedence state. The flag outputs are
not affected by OEB.
Outputs
AOUT
11-0
— Data Output A
AOUT
11-0
is the 12-bit registered data
output port.
BOUT
11-0
— Data Output B
BOUT
11-0
is the 12-bit registered data
output port.
FFA — Full Flag A
FFA goes LOW when RAM Array A is
full of data. When FFA is LOW, RAM
Array A can not be written to. The Full
Flag is synchronized to the rising edge
of WCLKA.
EFA — Empty Flag A
EFA goes LOW when the read pointer is
equal to the write pointer, indicating that
RAM Array A is empty. When EFA is
LOW, read operations can not be
performed. The Empty Flag is synchro-
nized to the rising edge of RCLKA.
FFB — Full Flag B
FFB goes LOW when RAM Array B is full
of data. When FFB is LOW, RAM Array B
can not be written to. The Full Flag is
synchronized to the rising edge of WCLKB.
EFB — Empty Flag B
EFB goes LOW when the read pointer
is equal to the write pointer, indicating
that RAM Array B is empty. When EFB
is LOW, read operations can not be
performed. The Empty Flag is synchro-
nized to the rising edge of RCLKB.
PAFA — ProgrammableAlmost-Full Flag A
PAFA goes LOW when the write
pointer is (Full – N) locations ahead of
the read pointer. N is the value stored
in the PAFA register and has no default
value. PAFA is synchronized to the
rising edge of WCLKA.
PAEA — ProgrammableAlmost-Empty Flag A
PAEA goes HIGH when the write
pointer is (N + 1) location ahead of the
read pointer. N is the value stored in
the PAEA register and has no default
value. PAEA is synchronized to the
rising edge of RCLKA.
PAFB — ProgrammableAlmost-Full Flag B
PAFB goes LOW
when
the write pointer
is (Full – N) locations ahead of the read
pointer. N is the value stored in the
PAFB register and has no default value.
PAFB is synchronized to the rising
edge of WCLKB.
PAEB — ProgrammableAlmost-Empty Flag B
PAEB goes HIGH when the write
pointer is (N + 1) location ahead of the
read pointer. N is the value stored in
the PAEB register and has no default
value. PAEB is synchronized to the
rising edge of RCLKB.
相關(guān)PDF資料
PDF描述
LF3320 Horizontal Digital Image Filter(水平數(shù)字圖像濾波器)
LF3320QC12 Horizontal Digital Image Filter
LF3320QC15 Horizontal Digital Image Filter
LF3330 Vertical Digital Image Filter(垂直數(shù)字圖像濾波器)
LF3338 8-Bit Vertical Digital Image Filter(8位垂直數(shù)字圖像濾波器)
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LF3310QC15 制造商:LOGIC 制造商全稱:LOGIC 功能描述:Horizontal / Vertical Digital Image Filter
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