LF3370 查看數據表（PDF） - LOGIC Devices
零件编号
产品描述 (功能)
生产厂家
LF3370 Datasheet PDF : 24 Pages
| |||
DEVICES INCORPORATED
LF3370
High-Definition Video Format Converter
LF3370’s core. Data may be presented on
input ports A12-0, B12-0, and C12-0 as three
channels of non-interleaved input data, one
channel non-interleaved and one channel
interleaved input data, or one channel of
interleaved data (see Table 1 for various
video input schemes). D12-0 is the Key
channel input port; the Key channel is
simply passed through the input
demultiplexer with a latency that matches
the other three channels.
If video data is non-interleaved and
presented to input ports A12-0, B12-0, and
C12-0, no demultiplexing is performed.
The three channels are passed unmodified
into the LF3370 core with a delay of 3 CLK
cycles. For this operation, bits 0 and 1
must both be set to 1 in Configuration
Register 0 (see Table 5).
If video data is on two channels (see Figure
4), one channel of non-interleaved video
and one channel of interleaved video, it is
assumed that non-interleaved video is
presented to input port A12-0 (i.e., Luma)
FIGURE 4. INPUT PROCESSING 4:2:2:4 (INTERLEAVED CHROMA ON CHANNEL B)
CLK
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
RESET
SYNC
A12-0
B12-0
D12-0
A'12-0**
B'12-0**
C'12-0**
D'12-0**
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
Y8
Y9
Y10 Y11
Y12
CB0 CR0 CB2 CR2 CB4 CR4 CB6 CR6 CB8 CR8 CB10 CR10 CB12
K0
K1
K2
K3
K4
K5
K6
K7
K8
K9
K10 K11
K12
Y'0
Y'1
Y'2
Y'3
Y'4
Y'5
Y'6
Y'7
Y'8
CB'0
CB'2
CB'4
CB'6
CB'6
CR'0
CR'2
CR'4
CR'6
CR'6
K'0
K'1
K'2
K'3
K'4
K'5
K'6
K'7
K'8
* Demultiplexed Input Data (Output of Demux Section)
FIGURE 5. INPUT PROCESSING 4:2:2:4 (INTERLEAVED LUMA/CHROMA ON CHANNEL A)
1
2
3
4
5
6
7
8
9
10 11 12 13 14
15 16 17 18
CLK
RESET
CLK/2*
SYNC
A12-0
CB0 Y0 CR0 Y1 CB2 Y2 CR2 Y3 CB4 Y4 CR4 Y5 CB6
D12-0
K0
K1
K2
K3
K4
K5
A’12-0**
Y’0
Y’1
Y’2
Y’3
B’12-0**
CB’0
CB’1
C’12-0**
CR’0
CR’1
D’12-0**
K’0
K’1
K’2
K’3
* Core Clock (Internally Generated and Synchronized to CLK by RESET) Used Only When Single Channel Interleaved Input or Output Video is Used.
** Demultiplexed Input Data (Output of Demux Section)
Video Imaging Products
6
03/13/2001–LDS.3370-F
Share Link: 