參數(shù)資料
型號: T7121
英文描述: T7121 HDLC Interface for ISDN
中文描述: T7121的HDLC接口用于ISDN
文件頁數(shù): 33/68頁
文件大小: 685K
代理商: T7121
Lucent Technologies Inc.
33
Data Sheet
April 1997
T7121 HDLC Interface for ISDN (HIFI-64)
Functional Description
(continued)
Table 11. Register R4—Receiver Status Register
R4—B7
EOF
(0)
R4—B6
RQS6
(0)
R4—B5
RQS5
(0)
R4—B4
RQS4
(0)
R4—B3
RQS3
(0)
R4—B2
RQS2
(0)
R4—B1
RQS1
(0)
R4—B0
RQS0
(0)
Register
R4
Bit
Symbol
RQS0—RQS6
Name/Function
B(0—6)
Receive Queue Status.
Read only. Bits 0—6 indicate how many bytes
are available in the receive FIFO, including the first Status of Frame
(SF) byte. If no SF byte exists in the queue, these 7 bits indicate the
number of bytes in the queue. The bits are encoded in binary with bit 0
being the LSB.
End of Frame.
Read only. This flag is set when an SF byte exists in
the receive FIFO. When EOF is set, the receive queue status reflects
the number of bytes up to and including the first SF byte.
R4
B7
EOF
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