參數(shù)資料
型號(hào): XPC850ZT50BU
英文描述: Microprocessor
中文描述: 微處理器
文件頁(yè)數(shù): 49/76頁(yè)
文件大小: 825K
代理商: XPC850ZT50BU
MOTOROLA
MPC850 (Rev. A/B/C) Hardware Specifications
49
Serial Interface AC Electrical Specifications
74
L1xCLK edge to L1RSYNC, L1TSYNC, invalid
(SYNC hold time)
35.00
ns
75
L1RSYNC, L1TSYNC rise/fall time
15.00
ns
76
L1RXD valid to L1xCLK edge (L1RXD setup time)
17.00
ns
77
L1xCLK edge to L1RXD invalid (L1RXD hold time)
13.00
ns
78
L1xCLK edge to L1ST
n
valid
4
10.00
45.00
ns
78A
L1SYNC valid to L1ST
n
valid
10.00
45.00
ns
79
L1xCLK edge to L1ST
n
invalid
10.00
45.00
ns
80
L1xCLK edge to L1TXD valid
10.00
55.00
ns
80A
L1TSYNC valid to L1TXD valid
4
10.00
55.00
ns
81
L1xCLK edge to L1TXD high impedance
0.00
42.00
ns
82
L1RCLK, L1TCLK frequency (DSC =1)
16.00 or
SYNCCLK/2
MHz
83
L1RCLK, L1TCLK width low (DSC =1)
P + 10
ns
83A
L1RCLK, L1TCLK width high (DSC = 1)
3
P + 10
ns
84
L1CLK edge to L1CLKO valid (DSC = 1)
30.00
ns
85
L1RQ valid before falling edge of L1TSYNC
4
1.00
L1TCLK
86
L1GR setup time
2
42.00
ns
87
L1GR hold time
42.00
ns
88
L1xCLK edge to L1SYNC valid (FSD = 00) CNT =
0000, BYT = 0, DSC = 0)
0.00
ns
1
The ratio SyncCLK/L1RCLK must be greater than 2.5/1.
2
These specs are valid for IDL mode only.
3
Where P = 1/CLKOUT. Thus for a 25-MHz CLKO1 rate, P = 40 ns.
4
These strobes and TxD on the first bit of the frame become valid after L1CLK edge or L1SYNC,
whichever is later.
Table 8-17. SI Timing (continued)
Num
Characteristic
All Frequencies
Unit
Min
Max
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