4-Level FSK Modem Data Pump
Page 3 of 50
MX929B PRELIMINARY INFORMATION
4.5.2.16
4.5.2.17
4.5.2.18
4.5.2.19
4.5.2.20
4.5.2.21
4.5.2.22
4.5.3
4.5.3.1
4.5.3.2
4.5.3.3
4.5.3.4
4.5.4
4.5.4.1
4.5.4.2
4.5.4.3
4.5.4.4
4.5.4.5
4.5.4.6
4.5.4.7
4.5.5
4.5.5.1
4.5.5.2
4.5.5.3
4.5.5.4
4.5.5.5
4.5.5.6
4.5.5.7
4.5.6
TIB: Transmit Intermediate Block ............................................................................... 21
TLB: Transmit Last Block ........................................................................................... 21
T4S: Transmit 4 Symbols ........................................................................................... 21
TSID: Transmit Station ID ............................................................................................ 22
RESET: Stop any current action................................................................................. 22
Task Timing................................................................................................................ 22
RRC Filter Delay......................................................................................................... 23
Control Register B7, B6: CKDIV - Clock Division Ratio.............................................. 24
Control Register B5, B4: FSTOL - Frame Sync Tolerance to Inexact Matches ......... 24
Control Register B3, B2: LEVRES - Level Measurement Modes ............................... 25
Control Register B1, B0: PLLBW - Phase-Locked Loop Bandwidth Modes............... 25
Mode Register B7: IRQEN -
IRQ
Output Enable....................................................... 26
Mode Register B6: INVSYM - Invert Symbols ............................................................ 26
Mode Register B5:
TX/RX
- Tx/Rx Mode.................................................................. 26
Mode Register B4: RXEYE - Show Rx Eye ................................................................ 27
Mode Register B3: PSAVE - Powersave.................................................................... 27
Mode Register B2: SSIEN - 'S' Symbol IRQ Enable .................................................. 27
Mode Register B1, B0: SSYM - 'S' Symbol To Be Transmitted................................. 27
Status Register B7: IRQ - Interrupt Request .............................................................. 28
Status Register B6: BFREE - Data Block Buffer Free................................................ 28
Status Register B5: IBEMPTY - Interleave Buffer Empty........................................... 28
Status Register B4: DIBOVF - De-Interleave Buffer Overflow ................................... 29
Status Register B3: CRCERR - CRC Checksum Error .............................................. 29
Status Register B2: 'S' Symbol Ready........................................................................ 29
Status Register B1, B0: SVAL - Received 'S' Symbol Value ...................................... 29
Control Register .................................................................................................................... 24
Mode Register....................................................................................................................... 26
Status Register ..................................................................................................................... 28
Data Quality Register ............................................................................................................ 29
Cyclic Redundancy Codes .................................................................................................... 30
CRC0.......................................................................................................................... 30
CRC1.......................................................................................................................... 30
CRC2.......................................................................................................................... 30
Forward Error Correction............................................................................................ 30
Interleaving ................................................................................................................. 31
4.6
CRC, FEC and Interleaving.............................................................................................. 30
4.6.1
4.6.1.1
4.6.1.2
4.6.1.3
4.6.1.4
4.6.1.5
4.7
Transmitted Symbol Shape.............................................................................................. 31
©2001 MX-COM, INC.
www.mxcom.com Tel: 800 638 5577 336 744 5050
Fax: 336 744 5054
Doc. # 20480171.003
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA
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CMLMICRO [ CML MICROCIRCUITS ]
