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參數資料
| 型號： | PCD6003 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Digital telephone answering machine chip |
| 中文描述： | 數字電話應答機芯片 |
| 文件頁數： | 42/96頁 |
| 文件大小： | 385K |
| 代理商： | PCD6003 |
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2001 Apr 17
42
Philips Semiconductors
Product specification
Digital telephone answering machine chip
PCD6003
10.12.1 80C51
MICROCONTROLLER INTERFACE
.
The modem block interfaces to the microcontroller via the interrupt signal MSK_INT and via the control and data SFRs
MCON, MSTAT and MBUF. The MSK modem receive and transmit registers are both accessed via the SFR MBUF.
Writing to MBUF loads the transmit register and reading MBUF accesses a physically separate receive register.
10.12.1.1 MSK Modem Control Register (MCON)
Table 39
MSK Modem Control Register (SFR address C8H)
Table 40
Description of MCON bits
Note
1.
If both the transmitter and the receiver are disabled (MTEN = 0 and MREN = 0), the clock of the MSK modem is
switched off. It is advised to use this state for power saving.
Table 41
Selection of the modem’s baud rates
10.12.1.2 MSK Modem Status Register (MSTAT)
Table 42
MSK Modem Status Register (SFR address CAH), reset state 00H
7
6
5
4
3
2
1
0
MPR3
MPR2
MPR1
MPR0
MB1
MB0
MTEN
MREN
BIT
SYMBOL
DESCRIPTION
7 to 4
3 to 2
MPR[3:0]
MB[1:0]
Preamble pattern.
These 4 bits define the modems preamble pattern.
RX/TX frequency.
These 2 bits define the modem transmit/receive frequency; see
Table 41.
Modem Transmitter Enable.
If set the transmitter is active and MOUT[2:0] will get the
value <100> if no data is transmitted. If reset, MOUT[2:0] will get the value <111> to
zero the currents in the resistive DAC; see note 1.
Modem Receiver Enable.
If set the modem receiver is active and scans for Manchester
data; see note 1.
1
MTEN
0
MREN
MB1
MB0
MODEM BAUD RATE
0
0
1
1
0
1
0
1
1200 baud
2400 baud
3600 baud
4800 baud
7
6
5
4
3
2
1
0
MPOL
MRF
MRE
MRP
MRL
MTI
MRI
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相關代理商/技術參數 |
參數描述 |
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| PCD6003U | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Digital telephone answering machine chip |
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