參數(shù)資料
型號: DS21FT42
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): 82/145頁
文件大小: 466K
代理商: DS21FT42
DALLAS SEMICONDUCTOR
DS21FF42/DS21FT42
101899
/1232
(MSB)
LBD
(LSB)
BOC0
BD
BOC5
BOC4
BOC3
BOC2
BOC1
SYMBOL
POSITION
NAME AND DESCRIPTION
LBD
RBOC.7
Latched BOC Detected.
A latched version of the BD status bit
(RBOC.6). Will be cleared when read.
BOC Detected.
A real–time bit that is set high when the BOC
detector is presently seeing a valid sequence and set low when no
BOC is currently being detected.
BOC Bit 5.
Last bit received of the 6–bit code word.
BOC Bit 4.
BOC Bit 3.
BOC Bit 2.
BOC Bit 1.
BOC Bit 0.
First bit received of the 6–bit code word.
BD
RBOC.6
BOC5
BOC4
BOC3
BOC2
BOC1
BOC0
RBOC.5
RBOC.4
RBOC.3
RBOC.2
RBOC.1
RBOC.0
NOTE:
1. The LBD bit is latched and will be cleared when read.
2. The RBOC0 to RBOC5 bits display the last valid BOC code verified; these bits will be set to all ones on reset.
RHFR: RECEIVE HDLC FIFO
(Address = 05 Hex)
(MSB)
HDLC7
(LSB)
HDLC0
HDLC6
HDLC5
HDLC4
HDLC3
HDLC2
HDLC1
SYMBOL
POSITION
NAME AND DESCRIPTION
HDLC7
HDLC6
HDLC5
HDLC4
HDLC3
HDLC2
HDLC1
HDLC0
RHFR.7
RHFR.6
RHFR.5
RHFR.4
RHFR.3
RHFR.2
RHFR.1
RHFR.0
HDLC Data Bit 7
. MSB of a HDLC packet data byte.
HDLC Data Bit 6.
HDLC Data Bit 5.
HDLC Data Bit 4.
HDLC Data Bit 3.
HDLC Data Bit 2.
HDLC Data Bit 1.
HDLC Data Bit 0.
LSB of a HDLC packet data byte.
THIR: TRANSMIT HDLC INFORMATION
(Address = 06 Hex)
(MSB)
(LSB)
TUDR
TEMPTY
TFULL
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