參數(shù)資料
型號(hào): XRT86VL3X_07
廠商: Exar Corporation
元件分類: 通信及網(wǎng)絡(luò)
英文描述: Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
中文描述: Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
文件頁數(shù): 28/153頁
文件大?。?/td> 1316K
代理商: XRT86VL3X_07
XRT86VL3X
21
T1/E1/J1 FRAMER/LIU COMBO - ARCHITECTURE DESCRIPTION
REV. 1.2.2
3.1
Storing and Retrieving Message Contents
Each buffer has its own dedicated internal holding register. To access the contents of these buffers or to store
messages, the XRT86VL3x utilizes a multiplexed access. The buffers are broken down into Buffer 0 or Buffer
1. Register 0xn600 is used to Read or Write to Buffer 0 of the selected HDLC controller, while register 0xn700
is used to Read or Write to Buffer 1 of the selected HDLC controller. Although, each HDLC controller has its
own dedicated register set for control, the message contents of only one controller can be accessed at one
time through the microprocessor or DMA interface.
F
IGURE
29. S
TORING
AND
R
ETRIEVING
M
ESSAGE
C
ONTENTS
96-Bytes
HDLC1 Buffer 0
96-Bytes
HDLC2 Buffer 0
96-Bytes
HDLC3 Buffer 0
96-Bytes
HDLC1 Buffer 1
96-Bytes
HDLC2 Buffer 1
96-Bytes
HDLC3 Buffer 1
Register 0xn700
M
U
X
Register 0xn600
M
U
X
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