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參數(shù)資料
| 型號： | PSB7110 |
| 廠商： | SIEMENS AG |
| 英文描述： | Enhanced ISDN Data Access Controller ISAR |
| 中文描述： | 增強綜合業(yè)務(wù)數(shù)字網(wǎng)的數(shù)據(jù)接入控制器專家組 |
| 文件頁數(shù)： | 112/164頁 |
| 文件大?。?/td> | 1173K |
| 代理商： | PSB7110 |
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_________________________________________________PSB 7110
Siemens Aktiengesellschaft
Page 112
NOM ... Number of Valid Bytes in the Mailbox
For certain status events one additional parameter is provided via the mailbox.
For the following parameters the received value 0 or 1 for each bit is indicated in the corresponding
bit position. The control bits do not represent the real time value that is currently received, but they
are data related, i.e. the S-, X- and E-bits are transfered to the host with the corresponding data that
was received at the same time.
Information about control bits that are currently received can be requested by the host (see 3.7.1
Pump status request), additionally the real time value for X, which is needed for flow control, is
indicated by two separate status events (VEVT = 70h and 71h).
X ... X-bit
SB ... S4-, S9-bit
SA1 ... S3-, S8-bit
SA0 ... S1-, S6-bit
E1-E7 ... E1-bit - E7-bit
For the 600 bps data rate bit E7 is always set to 1.
FRC ... Frame Counter for delay of synchronisation
Denotes the number of additional frames, which was set by the host, that must be received
correctly in order to achieve synchronism. As default (FRC=0), one V.110 frame must be
received correctly to get synchronised and e.g. if FRC=3, four frames are to be received
correctly, before data is transfered to the receive buffer.
ROF0, ROF1, RON1, ROFX, RONX ... Remote DTE status
Contains information about the status of the remote DTE. The received D- and SA-bits are
sampled and compared against different possibilities. A status change is detected by a match
of the comparison and indicated by setting the bits as shown below. Several bits in the
parameter can be set simultaneously depending on the sampled data, e.g. if ROF0 is set,
ROFX will be set, too.
Status
ROF0
Status Name
Remote (0, OFF)
Sampled Data
D
SA
D
SA
D
SA
D
SA
D
SA
00000000 00000000
11111111 11111111
11111111 11111111
11111111 11111111
11111111 11111111
00000000 00000000
XXXXXXXX XXXXXXXX
11111111 11111111
XXXXXXXX XXXXXXXX
00000000 00000000
ROF1
Remote (1, OFF)
RON1
Remote (1, ON)
ROFX
Remote (X, OFF)
RONX
Remote (X, ON)
Note:
X
=don't care
It should be noted that the DTE status information is data related and may not represent the value
currently be received.
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