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參數(shù)資料
| 型號(hào)： | PCT789T-A |
| 英文描述： | PCI HSP56 World MicroModem/PCT303DW/PCT1789W |
| 中文描述： | 世界MicroModem/PCT303DW/PCT1789W的PCI HSP56 |
| 文件頁(yè)數(shù)： | 38/70頁(yè) |
| 文件大?。?/td> | 872K |
| 代理商： | PCT789T-A |
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PC-TEL, Inc.
38
1789W0DOCDAT06A-0299
PCT1789W DATA SHEET
PCT789T-A C
ONTROL
R
EGISTERS
!
PRELIMINARY
PRELIMINARY
External Output
(Register 2, W)
Bit Definitions:
External Input
(Register 2, R)
Bit Definitions:
Miscellaneous Control
(Register 3, W)
Bit Definitions:
Error Count
(Register 3, R)
Bit Definitions:
Reserved
12
EXTOUT[7:0]
4
15
14
13
11
10
9
8
7
6
5
3
2
1
0
Bits
Name
Reserved
EXTOUT[7:0]
Description
Reserved.
External output register (default 00h). Directly drives four programmable output
pins.
EXTOUT[7:4]: OUT[7:4].
EXTOUT[3]: mute speaker.
EXTOUT[2]: handset relay control.
EXTOUT[1]: Caller ID relay control.
EXTOUT[0]: OFF-Hook relay control.
15:8
7:0
Reserved
10
EXTIN[3:0]
2
15
14
13
12
11
9
8
7
6
5
4
3
1
0
Bits
Name
Reserved
EXTIN[3:0]
Description
Reserved.
External input register allows system to monitor four programmable input pins.
EXTIN[3:2]: IN[1:0]
EXTIN[1]: ILC-Sense (or handset detect) input.
EXTIN[0]: ring detect input.
15:4
3:0
Reserved
14
TOC[3:0]
10
FFSZ[7:0]
4
15
13
12
11
9
8
7
6
5
3
2
1
0
Bits
Name
Reserved
TOC[3:0]
Description
Reserved.
Time-out count register (default 00h). Allows PCT789T-A to generate internal
time-out if errors detected for (N+1)*256*FFSZ*1/Sampling Frequency, where
N=0–15.
FIFO size control register (default 20h). Allows Tx and Rx buffer size to be chosen
up to 128 words deep (the legal number accepted is between 16 and 128). When-
ever the Rx buffer is full, INTA is generated, if enabled.
15:12
11:8
7:0
FFSZ[7:0]
Reserved
14
ERRCNT[11:0]
6
15
13
12
11
10
9
8
7
5
4
3
2
1
0
Bits
Name
Reserved
Description
Reserved.
15:12
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