参数资料
型号: LXT6251A
英文描述: ATM/SONET MAPPER|CMOS|QFP|208PIN|PLASTIC
中文描述: 的ATM / SONET的映射器|的CMOS | QFP封装| 208PIN |塑料
文件页数: 55/76页
文件大小: 995K
代理商: LXT6251A
21 E1 SDH Mapper
LXT6251A
Datasheet
55
8.4
Configuration Registers
The registers described in this section are related to global configuration. The global address space
includes 000H through 00FH, as well as 161H through 175H.
8.4.1
GLOB_CONF
Global Configuration (000H)
This register configures the high level operational characteristics of the chip.
Global Configuration Registers
160H
Reserved
161
175H
TU_TS_CONF
TU Time Slot Configuration (21 registers
representing Port 1 to Port 21)
R/W
page 57
176
1FFH
Reserved
Table 17. Register Address Map
Address
Mnemonic
Register Name
Type
Page #
Bit
Name
Label
Type
Default
7
Reserved
6
TxK4En
This signal enables the use of the K4 Enhanced RDI in the transmit
direction.
0 = Force K4 ERDI to 0
1 = Drive K4 ERDI with input RAP alarm signals.
R/W
0
5
MultiFrmSel
Selects the multiframe indicator used.
0 = Use DTBH4EN and MTBH4EN signals
1 = Use DTBJOJ1EN and MTBJOJ1EN signals (OHT must be configured
likewise).
R/W
0
4
TBTristate
This signal defaults to
1
, forcing the Transmit side Telecom bus timing
signal pins to tri-state. This bit should be set to
0
after
both this chip and
other chips sharing the telecom bus are configured to avoid any device from
trashing the bus before configuration is complete.
0 = Telecom Bus outputs enabled
1 = Telecom Bus outputs in Tri-state
R/W
1
3
BIPMode
Sets the BIP Error counting mode for all receive tributary LPT blocks.
0 = Block Error Counting
1 = BIP Error Counting
R/W
0
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