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): 121/141頁
文件大?。?/td> 1149K
代理商: BT849A
Brooktree
111
C
ONTROL
R
EGISTER
D
EFINITIONS
PLL Reference Multiplier - PLL_F_LO (Bt848A/849A only)
L848A_A
Bt848/848A/849A
Single-Chip Video Capture for PCI
PLL Reference Multiplier - PLL_F_LO (Bt848A/849A only)
Memory Mapped Location - 0x0F0
Upon reset it is initialized to 00
PLL Reference Multiplier - PLL_F_HI (Bt848A/849A only)
Memory Mapped Location - 0x0F4
Upon reset it is initialized to 00
Integer- PLL-XCI (Bt848A/849A only)
Memory Mapped Location - 0x0F8
Upon reset it is initialized to 00
Field Capture Counter-(FCAP) (Bt848A/849A only)
Memory Mapped Location - 0x0E8
Upon reset it is initialized to 00
Bits
Type
Default
Name
Description
[7:0]
RW
0x00
PLL_F_LO
Lower byte of PLL Frequency register.
Bits
Type
Default
Name
Description
[7:0]
RW
0x00
PLL_F_HI
Upper byte of PLL Frequency register
Bits
Type
Default
Name
Description
[5:0]
RW
000000
PLL_I
PLL_I input. Range 6–63. If set to 0x00, then the PLL sleeps.
[6]
RW
0
PLL_C
PLL VCO post-divider
0
= Use 6 for post-divider
1
= Use 4 for post-divider
[7]
RW
0
PLL_X
PLL Ref xtal pre-divider
0
= Use 1 for pre-divider
1
= Use 2 for pre-divider
Bits
Type
Default
Name
Description
[7:0]
RW
(1)
0x00
FCNTR
Counts Field transitions when any CAPTURE bit is set.
Notes: (1). Any write to this register resets the contents to zero.
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