参数资料
型号: XRT83SL38IB
厂商: Exar Corporation
文件页数: 84/88页
文件大小: 0K
描述: IC LIU SH T1/E1/J1 OCTAL 225BGA
标准包装: 84
类型: 线路接口装置(LIU)
驱动器/接收器数: 8/8
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: 225-BGA
供应商设备封装: 225-BGA(19x19)
包装: 托盘
XRT83SL38
83
REV. 1.0.2
OCTAL T1/E1/J1 SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR
MOTOROLA ASYCHRONOUS INTERFACE TIMING
The signals used in the Motorola microprocessor interface mode are: Address Strobe (AS), Data Strobe (DS),
Read/Write Enable (R/W), Chip Select (CS), Address and Data bits. The interface is compatible with the timing
of a Motorola 68000 microprocessor family with up to 16.67 MHz clock frequency. The interface timing is
shown in Figure 28 and Figure 29. The I/O specifications are shown in Table 52.
FIGURE 28. MOTOROLA 68K ASYNCHRONOUS PROGRAMMED I/O INTERFACE TIMING
TABLE 52: ASYNCHRONOUS - MOTOROLA 68K - INTERFACE TIMING SPECIFICATION
SYMBOL
PARAMETER
MIN
MAX
UNITS
t0
Valid Address to CS Falling Edge
0
-
ns
t1
CS Falling Edge to DS Assert
20
-
ns
t2
DS Assert to DTACK Assert
-
135
ns
NA
DS Pulse Width (t2)
135
-
ns
t3
CS Falling Edge to AS Falling Edge
0
-
ns
Reset pulse width - both Motorola and Intel Operations (see
t9
Reset pulse width
10
s
FIGURE 29. MICROPROCESSOR INTERFACE TIMING - RESET PULSE WIDTH
CS
ADD R[6:0]
DATA[7:0]
RD_D S
WR _R /W
RD Y_D TACK
Valid Data for Readback
Data Available to W rite Into the LIU
RE AD OP E RATION
W RITE O PE RATION
t
0
t
0
t
1
t
2
Valid Address
Valid Addres s
t
3
t
3
t
1
t
2
A LE_AS
Reset
T9
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