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參數(shù)資料
| 型號： | MT312 |
| 廠商： | ZARLINK SEMICONDUCTOR INC |
| 元件分類： | 消費家電 |
| 英文描述： | Satellite Channel Decoder |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP80 |
| 封裝： | MQFP-80 |
| 文件頁數(shù)： | 42/90頁 |
| 文件大?。?/td> | 318K |
| 代理商： | MT312 |
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MT312
QPSK Demodulator
42
B2:
High = QPSK CS LOCK
B1:
High = QPSK CT LOCK
B0:
Reserved. Must be set low.
6.2 QPSK Demodulator Read Registers
6.2.1 QPSK Interrupt. Registers 0 - 2 (R)
The majority of these interrupts are for diagnostic purposes and generally not useful in normal operation,
unless otherwise indicated.
B7:
High = QPSK Carrier and Timing LOCK important indicator.
B6:
High = QPSK Carrier and Timing UNLOCK
B5:
High = QPSK LOCKimportant indicator.
B4:
High = QPSK UNLOCK
B3:
High = QPSK Timing LOCK
B2:
High = QPSK Timing UNLOCK
B1:
High = QPSK Carrier LOCK
B0:
High = QPSK Carrier UNLOCK
Reading an Interrupt register resets that register.
After the QPSK demodulator achieves Carrier and Timing Lock, from now on referred to as QPSK CT Lock, it
waits some time for the FEC to con
fi
rm this lock. When the FEC locks, the QPSK enters QPSK Lock state. The
time QPSK waits for the FEC to gain lock is programmable via register 81 (see section 10.2.31 FEC Lock Time.
Register 81 (R/W)). If the FEC does not achieve lock during this period (very unlikely), then MT312 drops its
QPSK CT Lock status and resumes search for another QPSK signal.
B7:
High = QPSK FE AGC LOCK
B6:
High = QPSK Digital Internal AGC LOCK
B5:
High = QPSK Digital Internal AGC UNLOCK
B4:
Reserved High = QPSK FR LOCK
NAME
ADR
B7
B6
B5
B4
B3
B2
B1
B0
Def
hex
QPSK INT H
00
QPSK INT [23:16] Interrupt QPSK (high byte)
R
00
NAME
ADR
B7
B6
B5
B4
B3
B2
B1
B0
Def
hex
QPSK INT M
01
QPSK INT [15:8] Interrupt QPSK (middle byte)
R
00
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|---|---|
| MT312T-Y | 2x4mm Rectangular LED Lamps |
| MT3371BN | Wide Dynamic Range DTMF Receiver |
| MT3371BS | Wide Dynamic Range DTMF Receiver |
| MT3371BNR | Wide Dynamic Range DTMF Receiver |
| MT3371BSR1 | Wide Dynamic Range DTMF Receiver |
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|---|---|
| MT3-1203SI | 制造商:VOLGEN 制造商全稱:VOLGEN 功能描述:3 WATT DC/DC CONVERTER, SIINGLE & MULTIIPLE OUTPUTS |
| MT3-1205SI | 制造商:VOLGEN 制造商全稱:VOLGEN 功能描述:3 WATT DC/DC CONVERTER, SIINGLE & MULTIIPLE OUTPUTS |
| MT3-1212SI | 制造商:VOLGEN 制造商全稱:VOLGEN 功能描述:3 WATT DC/DC CONVERTER, SIINGLE & MULTIIPLE OUTPUTS |
| MT3-1212WI | 制造商:VOLGEN 制造商全稱:VOLGEN 功能描述:3 WATT DC/DC CONVERTER, SIINGLE & MULTIIPLE OUTPUTS |
| MT3-1215WI | 制造商:VOLGEN 制造商全稱:VOLGEN 功能描述:3 WATT DC/DC CONVERTER, SIINGLE & MULTIIPLE OUTPUTS |
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