参数资料
型号: XRT72L71IQ
厂商: Exar Corporation
文件页数: 95/102页
文件大小: 0K
描述: IC FRAMER DS3 ATM UNI 160PQFP
产品变化通告: XRT72Lx Series Obsolescence 02/May/2012
标准包装: 24
控制器类型: DS3 ATM UNI,透明通道调帧器
电源电压: 3.3V
电流 - 电源: 120mA
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 160-BQFP
供应商设备封装: 160-PQFP(28x28)
包装: 托盘
XRT72L71
á
DS3 ATM UNI/CLEAR CHANNEL FRAMER
REV. 1.1.0
88
TABLE 107: UTOPIA CONFIGURATION REGISTER
REGISTER 106
UTOPIA CONFIGURATION REGISTER
HEX ADDRESS: 0X6A
BIT
FUNCTION
TYPE
DEFAULT
DESCRIPTION-OPERATION
7-6
Unused
RO
0
5
Handshake Mode
R/W
0
0: Transmit and Receive UTOPIA Interface blocks operate in the Octet-Level
handshake mode
1: Transmit and Receive UTOPIA Interfaces blocks operate in the Cell-Level
handshake mode
NOTE: This bit-field is ignore if the XRT72L71 is configured to operate in the
“Clear-Channel Framer” Mode, or if the chip is configured to operate in the
“Multi-PHY” Mode.
4M PHY
R/W
1
0: Transmit and Receive UTOPIA Interface block operates in the “Single-
PHY” mode
1: Transmit and Receive UTOPIA Interface block operates in the “Multi-PHY”
mode
NOTE: This bit-field is only active if the XRT72L71 is configured to operate
in the “ATM UNI” Mode.
3
Cell of 52Bytes
R/W
0
0: Transmit and Receive UTOPIA Interface blocks process 53 bytes/cell
when the UTOPIA Data Bus width is set to 8 bits. The Transmit and Receive
UTOPIA Interface blocks process 54 bytes when the UTOPIA Data Bus width
is set to 16 bits.
1: Transmit and Receive UTOPIA Interface blocks process 52 bytes/cell,
independent of the UTOPIA Data Bus width.
NOTE: This bit-field is only active if the XRT72L71 is configured to operate
in the “ATM UNI” Mode.
2
Tx FIFO Depth(‘1)
R/W
0
00: Operating Depth of Transmit FIFO is 16 cells
01: Operating Depth of Transmit FIFO is 12 cells
10: Operating Depth of Transmit FIFO is 8 cells
11: Operating Depth of Transmit FIFO is 4 cells
NOTE: This bit-field is only active if the XRT72L71 is configured to operate
in the “ATM UNI” Mode.
1
Tx FIFO Depth(0)
R/W
0
UTOPIA Width16
R/W
0
0: Transmit and Receive UTOPIA Data Bus Width is configured to be 8 bits.
1: Transmit and Receive UTOPIA Data Bus Width is configured to be16 bits.
NOTE: This bit-field is only active if the XRT72L71 is configured to operate
in the “ATM UNI” Mode.
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