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| 型號： | GC3011-CQ |
| 文件頁數(shù)： | 26/34頁 |
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| 代理商： | GC3011-CQ |
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GRAYCHIP,INC.
- 26 -
JULY 22, 1996
GC3011 DIGITAL RESAMPLER
This document contains information which may be changed at any time without notice
4.9
STATUS REGISTERS
These registers allow the user to read the status information selected by STATUS_SELECT.
4.9.1
READ RATIO
If STATUS_SELECT is 0 the current resampling ratio is read (see the RATIO_HOLD bit in Section
4.8 and the diagram in Figure 2.)
ADDRESS 14:
Status Register 0, STATUS_SELECT=0
BIT
TYPE
NAME
DESCRIPTION
0-7
R
RATIO
[0:7]
Lower byte of the ratio
ADDRESS 15:
Status Register 1, STATUS_SELECT=0
BIT
TYPE
NAME
DESCRIPTION
0-7
R
RATIO
[8:15]
Upper byte of the ratio
4.9.2
READ FIFO STATUS
If STATUS_SELECT is 1 the FIFO status is read from address 14. Address 15 is unused.
ADDRESS 14:
Status Register 0, STATUS_SELECT=1
BIT
TYPE
NAME
DESCRIPTION
0-3
R
DEPTH
[0:3]
The FIFO depth. See Section 2.7.1 for the gray
scale encoding of these bits.
The FIFO is empty when this bit is high
The FIFO is more than half full when this bit is high
The FIFO is full when this bit is high
This bit is set and held when the FIFO full or empty
condition is detected. The user clears the bit by
writing
anything
to
STATUS_SELECT= 1.
4
5
6
7
R
R
R
R/Clear
EMPTY
HALF_FULL
FULL
FIFO_ERROR
address
14
when
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