參數(shù)資料
型號(hào)： MPC860SR
廠商： Motorola, Inc.
英文描述： Family Hardware Specifications
中文描述： 家庭硬件規(guī)格
文件頁數(shù)： 55/76頁
文件大?。?/td> 857K
代理商： MPC860SR
MOTOROLA
MPC860 Family Hardware Specifications
55
SCC in NMSI Mode Electrical Specifications
11.6 SCC in NMSI Mode Electrical Specifications
Table 11-18 provides the NMSI external clock timing.
Table 11-19 provides the NMSI internal clock timing.
Figure 11-54 through Figure 11-56 show the NMSI timings.
Table 11-18. NMSI External Clock Timing
Num
Characteristic
All Frequencies
Unit
Min
Max
100
RCLK1 and TCLK1 width high
1
1
The ratios SYNCCLK/RCLK1 and SYNCCLK/TCLK1 must be greater than or equal to 2.25/1.
2
Also applies to CD and CTS hold time when they are used as an external sync signal.
1/SYNCCLK
—
ns
101
RCLK1 and TCLK1 width low
1/SYNCCLK + 5
—
ns
102
RCLK1 and TCLK1 rise/fall time
—
15.00
ns
103
TXD1 active delay (from TCLK1 falling edge)
0.00
50.00
ns
104
RTS1 active/inactive delay (from TCLK1 falling edge)
0.00
50.00
ns
105
CTS1 setup time to TCLK1 rising edge
5.00
—
ns
106
RXD1 setup time to RCLK1 rising edge
5.00
—
ns
107
RXD1 hold time from RCLK1 rising edge
2
5.00
—
ns
108
CD1 setup Time to RCLK1 rising edge
5.00
—
ns
Table 11-19. NMSI Internal Clock Timing
Num
Characteristic
All Frequencies
Unit
Min
Max
100
RCLK1 and TCLK1 frequency
1
1
The ratios SYNCCLK/RCLK1 and SYNCCLK/TCLK1 must be greater or equal to 3/1.
2
Also applies to CD and CTS hold time when they are used as an external sync signals.
0.00
SYNCCLK/3
MHz
102
RCLK1 and TCLK1 rise/fall time
—
—
ns
103
TXD1 active delay (from TCLK1 falling edge)
0.00
30.00
ns
104
RTS1 active/inactive delay (from TCLK1 falling edge)
0.00
30.00
ns
105
CTS1 setup time to TCLK1 rising edge
40.00
—
ns
106
RXD1 setup time to RCLK1 rising edge
40.00
—
ns
107
RXD1 hold time from RCLK1 rising edge
2
0.00
—
ns
108
CD1 setup time to RCLK1 rising edge
40.00
—
ns
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