參數(shù)資料
型號: XRT83VSH314IB
廠商: Exar Corporation
文件頁數(shù): 30/80頁
文件大?。?/td> 0K
描述: IC LIU SH T1/E1/J1 14CH 304TBGA
標(biāo)準(zhǔn)包裝: 27
類型: 線路接口裝置(LIU)
驅(qū)動器/接收器數(shù): 14/14
規(guī)程: T1,E1,J1
電源電壓: 3.135 V ~ 3.465 V
安裝類型: 表面貼裝
封裝/外殼: 304-BBGA
供應(yīng)商設(shè)備封裝: 304-PBGA(31x31)
包裝: 托盤
XRT83VSH314
33
14-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT
REV. 1.0.1
5.2
84-Channel T1/E1 Multiplexer/Mapper Applications
The XRT83VSH314 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 24 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 12.
FIGURE 24. SIMPLIFIED BLOCK DIAGRAM OF AN 84-CHANNEL APPLICATION
TABLE 12: 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[5:1]
CS
0
12
3
4
5
Master
Slave
XRT83VSH314
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