參數(shù)資料
型號(hào): BT849A
英文描述: Single-Chip Video Capture for PCI
中文描述: 單芯片的PCI視頻捕捉
文件頁數(shù): 22/141頁
文件大?。?/td> 1149K
代理商: BT849A
Bt848/848A/849A
Single-Chip Video Capture for PCI
Brooktree
12
F
UNCTIONAL
D
ESCRIPTION
Pin Descriptions
L848A_A
90, 109,
123
VDDG +5V
P
Power supply for GPIO port signals. A 0.1
μ
F ceramic capac-
itor should be connected between the VDDG pins and the
ground plane as close to the device as possible.
12, 19,
26, 34,
41, 48,
57, 64,
71, 77,
80, 91,
100, 107,
121, 122,
160
GND
G
Ground for digital circuitry. All GND pins must be connected
together as close to the device as possible.
132, 135,
140, 142,
144, 146,
149, 153,
155, 159
AGND,
VNEG
G
Ground for analog circuitry. All AGND pins and VNEG must
be connected together as close to the device as possible.
4
PVREF
A
This pin should be connected to GND (this reference signal
may be connected to the +3.3 V pin on the PCI bus, even if
the PCI bus does not supply 3.3 V).
124–129
N/C
No connect
Reserved
GPX[5:0]
I/O
Remapped from
GPIO [5:0]
These pins are remapped on the Bt848A and Bt849A to pro-
vide the same functionality as on the Bt848 but on a different
pin.
I/O Column Legend:
I = Digital Input
O = Digital Output
I/O = Digital Bidirectional
A = Analog
G = Ground
P = Power
Table 2. Pin Descriptions Grouped by Pin Function
(6 of 6)
Pin #
Pin Name
I/O
Signal
Description
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