參數(shù)資料
型號(hào)： TMPR28051
英文描述： TMPR28051 STS-1/AU-3 (STM-0) Mapper Device Advisory for Version 5 of the Device
中文描述： TMPR28051 STS-1/AU-3（的STM - 0）映射為版本的設(shè)備5設(shè)備咨詢
文件頁(yè)數(shù)： 55/90頁(yè)
文件大小： 1090K
代理商： TMPR28051
Data Sheet
August 1999
TMPR28051 STS-1/AU-3 (STM-0) Mapper
41
Lucent Technologies Inc.
Microprocessor Interface Description
(continued)
Register Architecture Description
(continued)
Table 15
.
Registers 0x00—0x16: Device-Level Control, Alarm, and Mask Bits
(continued)
Address
(Hex)
Bit #
Name
Function
Reset
Default
(Hex)
0x00
0x05
—
—
The bits in register 0x05 are used to report problems at the
receive DS1/E1 and VT level. The bits in this register are
composite bits. The bits that report the problems at the VT
level are located in 28 separate registers (one for each VT)
as described below. These composite bits are placed in the
register map to determine which type of error was
detected. When any one of the 28 VT bits indicates an
error, the corresponding composite bit indicates an error.
ESOFCOM = 1 reports that the device has experienced
either a receive or a transmit elastic store overflow. This is
an event bit and is held until read.
VTSIZECOM = 1 reports incorrect VT size bits. The valid
VT size bits are 11 for VT1.5 and 10 for VT2.
VTLOPCOM = 1 reports LOP-V.
VTRFIRDICOM = 1 reports the fact that the VT RFI/RDI
bits have been received as a new consistent value for three
consecutive superframes. This is an event bit and is held
until read.
VTAISCOM = 1 reports the fact that the V1 and V2 pointer
bytes are all 1s for three consecutive superframes.
VTLABCOM = 1 reports change of state of the VT label. In
order for this bit to be set, the device must detect three
consecutive consistent new values for the VT label. This is
an event bit and is held until read.
AISLOCCOM = 1 reports an AIS or LOC condition on DS1/
E1. This is a current state bit with a minimum persistence
of 2 ms. The indications reset if the condition is no longer
true.
STS1LOS = 1 reports an STS-1 loss of signal. The bits in
register 0x91 are used to set the number of 6.48 MHz clock
periods required to declare received STS-1 loss of signal. If
this value is 0x00, then STS1LOS is not declared. This is a
current state bit with a minimum persistence of 250
μ
s. The
indications reset if the condition is no longer true.
7
ESOFCOM
6
VTSIZECOM
5
4
VTLOPCOM
VTRFIRDICOM
3
VTAISCOM
2
VTLABCOM
1
AISLOCCOM
0
STS1LOS
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