參數(shù)資料
型號: DS21FT42N
廠商: Maxim Integrated Products
文件頁數(shù): 83/114頁
文件大?。?/td> 0K
描述: IC FRAMER T1 4X3 12CH IND 300BGA
產(chǎn)品培訓模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標準包裝: 40
控制器類型: T1 調(diào)幀器
接口: 并行/串行
電源電壓: 2.97 V ~ 3.63 V
電流 - 電源: 225mA
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 300-BBGA
供應商設備封裝: 300-PBGA(27x27)
包裝: 管件
DS21FT42/DS21FF42
70 of 114
SYMBOL
POSITION
NAME AND DESCRIPTION
TNF
HIMR.1
Transmit FIFO Not Full.
0 = interrupt masked
1 = interrupt enabled
TMEND
HIMR.0
Transmit Message End.
0 = interrupt masked
1 = interrupt enabled
RHIR: RECEIVE HDLC INFORMATION REGISTER (Address = 03 Hex)
(MSB)
(LSB)
RABT
RCRCE
ROVR
RVM
REMPTY
POK
CBYTE
OBYTE
SYMBOL
POSITION
NAME AND DESCRIPTION
RABT
RHIR.7
Abort Sequence Detected. Set whenever the HDLC
controller sees 7 or more ones in a row.
RCRCE
RHIR.6
CRC Error. Set when the CRC checksum is in error.
ROVR
RHIR.5
Overrun. Set when the HDLC controller has attempted to
write a byte into an already full receive FIFO.
RVM
RHIR.4
Valid Message. Set when the HDLC controller has detected
and checked a complete HDLC packet.
REMPTY
RHIR.3
Empty. A real–time bit that is set high when the receive
FIFO is empty.
POK
RHIR.2
Packet OK. Set when the byte available for reading in the
receive FIFO at RHFR is the last byte of a valid message (and
hence no abort was seen, no overrun occurred, and the CRC
was correct).
CBYTE
RHIR.1
Closing Byte. Set when the byte available for reading in the
receive FIFO at RHFR is the last byte of a message (whether
the message was valid or not).
OBYTE
RHIR.0
Opening Byte. Set when the byte available for reading in the
receive FIFO at RHFR is the first byte of a message.
NOTE:
The RABT, RCRCE, ROVR, and RVM bits are latched and will be cleared when read.
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