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参数资料
| 型号： | FX980L6 |
| 厂商： | CML MICROSYSTEMS PLC |
| 元件分类： | 消费家电 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQCC44 |
| 封装： | PLASTIC, LCC-44 |
| 文件页数： | 10/86页 |
| 文件大小： | 821K |
| 代理商： | FX980L6 |
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TETRA Baseband Processor
FX980
1997 Consumer Microcircuits Limited
18
D/980/3
ConfigCtrl1
Title:
Configuration Control register
Address:
$0x00
Function:
RW
Description:
General configuration bits, together with operational control signal bits.
Bit
Name
Active State
Function
7
DataRateHi
High
RW
When set active all serial port data transfers will be at
half of the master clock rate. When inactive, all serial
port data rates will be at a quarter of the master clock
rate. This has the effect of altering the Rx sample output
rate from 8 times the symbol rate when active to 4 times
when inactive.
6
TxHandshakeEn
High
RW
When set active enable the transmit hardware interlock
protocol, thereby stopping the Serial Clock (SClk) if the
transmit path is enabled and the transmit FIFO is full.
5
BiDirCmdPortEn
High
RW
When this bit is set active the Cmd port will drive its
data line out of the chip for the last 8 bits of read
operations. When set inactive command read data will
be returned on either the Rx or the CmdRd port
(default).
4
RxDataForCmdRdEn
High
RW
This bit only takes effect if the BiDirCmdPortEn bit is
inactive. When set active this bit causes all command
read operations to respond with data on the Rx serial
port. When set inactive the command read data will be
output via the CmdRd port (default).
(5,4)
CommandReadDataMode
RW
The BiDirCmdPortEn bit and RxDataForCmdRdEn bit
together control the method by which command read
data is returned to the user.
00
(Default) Read data returned on CmdRd port.
01
Read data returned on Rx port and CmdRd port
10,11
Read data returned on Cmd port.
3
LowRxRdFS
High
RW
When set active both the CmdRdFS and the RxFS
output pins will be driven active low, when set inactive
the two frame sync's will be driven active high (default).
2
RxDataPortDisable
High
RW
When set active tristates the RxDat and RxFS pins.
1
RdCmdPortDisable
High
RW
When set active tristates the CmdRdDat and CmdRdFS
pins.
0
SymboModuBypass
High
RW
Setting this bit bypasses the Modulator, thereby taking
the least significant 3 bits of each Command Transmit
Data Serial Word received via the serial interface to
represent an absolute constellation mapping.
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