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LF4460 Datasheet(PDF) 10 Page - LUXPIA

No. de pieza LF4460
Descripción Electrónicos  Video Memory / FIFO
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Fabricante Electrónico  LUXPIA [LUXPIA]
Página de inicio  http://www.luxpialed.com
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LF4460 Datasheet(HTML) 10 Page - LUXPIA

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LOGIC Devices Incorporated
www.logicdevices.com
January 23, 2008 LDS-44xx-A
High Performance Memory Product
10
MEMORY
FRAME
Video Memory / FIFO
LF4460
LF4430
LF4415
PRELIMINARY
Power
Clocks
Data Input
Ports
Detailed Signal Definitions
VCC
INT - Internal Core Power Supply (+1.8V, +2.5V or +3.3V)
VCCint is auto-regulated to an internal core VCC. All VCCint pins must be connected.
VCC
O - Output Driver Power Supply (+1.8V, +2.5V or +3.3V)
VCCo is auto-regulated to an internal I/O driver VCC.. All VCCo power pins must be connected.
WCLK0 - Write Clock 0
Data present on D0/D1 is latched and write pointer(s) are incremented on the rising edge of WCLK0 when
WEN0 is LOW. In dual-channel modes (MODE=x1xx), WCLK0 services input port D0 only.
WCLK1 - Write Clock 1
In dual-channel modes (MODE=x1xx), data present on D1[11-0] is latched on the rising edge of WCLK1
when WEN1 is LOW. In single-channel modes (MODE=x0xx), WCLK1 is ignored and can be tied LOW
unless used as an ‘ADDR’ external address bit (See ADDR descr.).
RCLK - Read Clock
Data is read from memory, read pointer(s) are incremented, and data is presented on its respective output
port (Qx[11-0]) on a rising edge of RCLK when RENx and OEx is LOW.
D0[11-0] / D1[11-0] - Data Input Ports 0 / 1
D0/D1 is a 24-bit registered data input port. Please refer to Figure 5/6/7 on page 5/6/7 respectively.
For any single-channel configuration, including data widths of 16bits and higher, a combined D0/D1 input
port is enabled, with data latched on the rising edge of WCLK0. For data widths of 12bits or less,
use D0[11-0]. For two independent FIFOs, D0 services channel 0 and D1 services channel 1. In dual-
channel modes (MODE=x1xx), D1[11-0] is the 12-bit registered data input port for Channel 1. In this case
D0 is is latched on the rising edge of WCLK0 and D1[11-0] is latched on the rising edge of WCLK1. Bit 11
is the MSB in all modes. Any unused data input pins should be tied LOW.
SDA - Serial Data I/O
SDA is the standard bidirectional data pin of a two-wire serial microprocessor interface. External pullup
is required on both SDA and SCL pins.
SCL - Serial Clock Input
SCL is a standard two-wire serial microprocessor interface clock pin. Since this part cannot be the master
on a two-wire serial microprocessor interface, SCL functions as a dedicated input.
ADDR23-0 - External Read/Write Address Port
ADDR is a 24-bit input port for real-time Write or Read address override (single channel mode). The
ADDR23-0 port shares input pins unused in single-channel mode. See Table 1 below. This address can
be mapped as a linear 24bit address (default) or as a 2-D address with row/column components. For 2-D
addresses ADDR11-0 defines the X/Column-coordinate and ADDR23-12 specifies the Y/Row-coordinate.
For 2-D addressing, see the description of ROW_LENGTH. ADDR defines the write address if RDWR=0
(ADDR is latched by a WCLK0 rising edge). ADDR defines the read address if RDWR=1 (ADDR is latched
by a WCLK0 rising edge). See Registers 0 and 1.
Address Port
I2C
Interface
23 22 21
20
19
18
17
16 15 14 13 12 11
10
9
8
7
6
5
4
3
2
1
0
Table 1 - External Address ADDR[23:0] Mapping
WIEN1 WEN1 ADDR21 ADDR20 ADDR19 ADDR18 ADDR17 ADDR16 REN1 COLLID1 PE1 PF1 ADDR11 ADDR10 ADDR9 ADDR8 ADDR7 ADDR6 ADDR5 ADDR4 ADDR3 WCLR1 WSET1 WCLK1
Linear
2-D
11 10
9
8
7
6
5
4
3
2
1 0
11
10
9
8
7
6
5
4
3
2
1
0
Y / Row Address
X / Column Address
Pins


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