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| 型號： | MD8412B |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | LINK(IEEE 1394) |
| 中文描述： | 鏈接（1394） |
| 文件頁數(shù)： | 39/114頁 |
| 文件大小： | 577K |
| 代理商： | MD8412B |
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MD8412B
Ver 1.10
FUJIFUILM MICRODEVICES CO., LTD.
27
3-2-18 Buffer Status and Control Register
Index
50h
Initial value
0000 0055h
This register is used for asynchronous transmission/ reception. It is used for the status control of internal buffer for isoch-
ronous transmission/reception and for the flush control for an asynchronous reception buffer.
Bit 0
ATFEmpty
: ATF Empty bit (R- Initial value: 1b)
= Indicating a condition that the buffer is not empty
= Indicating a condition that the buffer is empty
This bit indicates that the asynchronous transmission buffer being accessed from the ATFData register is
empty.
0
1
Bit 1
ATFFull
: ATF Full bit (R- Initial value: 0b)
= Indicating a condition that the buffer is not full
= Indicating a condition that the buffer is full
This bit indicates that the asynchronous transmission buffer being accessed from the ATF Data register is
full.
0
1
Bit 2
ARFEmpty
: ARF Empty bit (R- Initial value: 1b)
= Indicating a condition that the buffer is not empty
= Indicating a condition that the buffer is empty
This bit indicates that the asynchronous reception buffer being accessed from the ARF Data register is
empty.
0
1
Bit 4
ITF/IRFEmpty
: I TF/IRF Empty bit (R- Initial value: 1b)
= Indicating a condition that the buffer is not completely empty
= Indicating a condition that the buffer is completely empty
This bit is used for transmission in IsoMode in cases other than 11bM It is also used for reception in the
case of 11bM It indicates that the isochronous buffer being accessed from the ITF/IRF Data register is
empty.
0
1
Bit 5
ITF/IRFFull
: ITF/IRF Full bit (R- Initial value: 0b)
= Indicating a condition that the buffer is not full
= Indicating a condition that the buffer is full
0
1
7
6
5
4
3
2
1
0
IRFEmpty
ITF/IRF
Full
ITF/IRF
Empty
ARFEmpty
ATFFull
ATFEmpty
15
14
13
12
11
10
9
8
SelectDreq
DreqEn
23
22
21
20
19
18
17
16
IRFcount
31
30
29
28
27
26
25
24
IRFcount
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