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(qiáng)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): 24/164頁
文件大?。?/td> 1173K
代理商: PSB7110
_________________________________________________PSB 7110
Siemens Aktiengesellschaft
Page 24
Data
Data
Reg. 48
Reg. 4A
Reg. 4C
Reg. 4C
Host
Internal Bus
Read
Address
Write
Address
61 byte
61 byte
(7110_23)
Figure 12 Mailbox Interface
Communication Buffers
The ISAR host interface provides for merging/splitting of two data paths and a test/diagnostics path. Each path is
buffered both in read- and write-direction.
The mailbox is used to access these three buffers. Two of them are related to the two ISDN B-channels and one
channel is mainly used for test purposes.
(7110_24)
Figure 13 Communication Buffers
Buffer 1 is used to access the fax/modem engine, a V.110 formatter, a DTMF generator/detector or for transparent
access to the IOM timeslots.
Buffer 2 is used to access a V.110 formatter or it provides transparent access to the IOM timeslots.
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