參數(shù)資料
型號: DS3160
元件分類: 通信及網絡
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): 76/107頁
文件大?。?/td> 592K
代理商: DS3160
DS3160
76 of 107
Register Name:
Register Description:
Register Address:
THDLC
Transmit HDLC FIFO
36h
Note:
When the CPU bus is operated in the 8-bit mode (CMS = 1), the host should always write to the
lower byte (bits 0 to 7) first followed by the upper byte (bits 8 to 15).
Bit #
Name
Default
7
6
5
4
3
2
1
0
D7
0
D6
0
D5
0
D4
0
D3
0
D2
0
D1
0
D0
0
Bit #
Name
Default
15
N/A
0
14
N/A
0
13
N/A
0
12
N/A
0
11
N/A
0
10
N/A
0
9
8
N/A
0
TMEND
0
Note 1:
The THDLC is a write-only register.
Note 2:
The transmit FIFO can be filled to a maximum capacity of 256 bytes. When the transmit FIFO is
full, it does not accept any additional data.
Bits 0 to 7/Transmit FIFO Data (D0 to D7).
Data for the transmit FIFO can be written to these bits. D0
is the LSB and is transmitted first while D7 is the MSB and is transmitted last.
Bit 8/Transmit Message End (TMEND).
This bit is used to delineate multiple messages in the transmit
FIFO. It should be set to a 1 when the last byte of a packet is written to the transmit FIFO. The setting of
this bit indicates to the HDLC controller that the message is complete and that it should calculate and add
in the CRC check sum and at least two flags. This bit should be set to 0 for all other data written to the
FIFO. All HDLC messages must be at least 2 bytes in length.
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