参数资料
型号: XRT83SL314IB-L
厂商: Exar Corporation
文件页数: 26/83页
文件大小: 0K
描述: IC LIU SH T1/E1/J1 14CH 304TBGA
标准包装: 27
类型: 线路接口装置(LIU)
驱动器/接收器数: 14/14
规程: T1,E1,J1
电源电压: 3.135 V ~ 3.465 V
安装类型: 表面贴装
封装/外壳: 304-LBGA
供应商设备封装: 304-TBGA(31x31)
包装: 托盘
XRT83SL314
xr
REV. 1.0.1
14-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT
29
3.2
84-Channel T1/E1 Multiplexer/Mapper Applications
The XRT83SL314 has the capability of providing the necessary chip selects for multiple 14-channel LIU
devices.
The LIU is responsible for selecting itself, up to 5 additional LIU devices, or all 6 devices
simultaneously for permitting access to internal registers.
The state of the chip select output pins is
determined by a chip select decoder controlled by the 3 MSBs of the address bus ADDR[10:8]. Only one LIU
(Master) requires the ADDR[10:8].
The other 5 LIU devices use the 8 LSBs for the direct address bus
ADDR[7:0]. Figure 23 is a simplified block diagram of connecting six 14-channel LIU devices for 84-channel
applications. Selection of the chip select outputs using ADDR[10:8] is shown in Table 7.
FIGURE 23. SIMPLIFIED BLOCK DIAGRAM OF AN 84-CHANNEL APPLICATION
TABLE 7: CHIP SELECT ASSIGNMENTS
ADDR[10:8]
ACTIVE CHIP SELECT
0h (000)
Current Device (Master)
1h (001)
Chip 1
2h (010)
Chip 2
3h (011)
Chip 3
4h (100)
Chip 4
5h (101)
Chip 5
6h (110)
Reserved
7h (111)
All Devices Active
Chip Address A[10:8]
Address A[7:0]
Data [7:0]
CS[4:0]
CS
1
23
4
5
6
Master
Slave
XRT83SL314
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