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參數資料
型號: W6691
廠商: WINBOND ELECTRONICS CORP
英文描述: ISDN S/T Interface Transceiver
中文描述: 綜合業務數字網的S / T接口收發器
文件頁數: 69/106頁
文件大小: 428K
代理商: W6691
Preliminary W6691
Publication Release Date: Sep 2001
69 Revision 1.1
8.7.17 D_ch Receive Frame Byte Count High
D_RBCH
Read Address 16H
Value after reset: 40H
7
6
5
4
3
2
1
0
VN1
VN0
LOV
RBC12 RBC11
RBC10
RBC9
RBC8
VN1-0 Chip Version Number
This is the chip version number. It is read as 01B.
LOV Length Overflow
A "1" in this bit indicates
8192 bytes are received and the frame is not yet complete. This bit is valid only
after a D_RME interrupt and remains valid until the frame is acknowledge via the RACK command.
RBC12-8 Receive Byte Count
These bits are five most significant bits of the total frame length. These bits are valid only after a D_RME
interrupt and remain valid until the frame is acknowledge via the RACK command.
8.7.18 D_ch Receive Frame Byte Count Low
D_RBCL Read
Address 17H
Value after reset: 00H
7
6
5
4
3
2
1
0
RBC7
RBC6
RBC5
RBC4
RBC3
RBC2
RBC1
RBC0
RBC7-0 Receive Byte Count
These bits are eight least significant bits of the total frame length. Bits RBC4-0 also indicate the length of the
data currently available in D_RFIFO. These bits are valid only after an D_RME interrupt and remain valid until
the frame is acknowledged via the RACK command.
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