pc87591l-n05 National Semiconductor Corporation, pc87591l-n05 Datasheet - Page 354
![no-image](/images/no-image-200.jpg)
pc87591l-n05
Manufacturer Part Number
pc87591l-n05
Description
Lpc Mobile Embedded Controller
Manufacturer
National Semiconductor Corporation
Datasheet
1.PC87591L-N05.pdf
(401 pages)
- Current page: 354 of 401
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7.0 Device Specifications
7.6.8
t
t
t
t
t
t
t
t
PSDIs
PSDIh
PSCLKl
PSCLKh
PSDOv
PSDOh
PSCLKa
PSCLKia
Symbol
1. ‘n’ is the number of clock cycles, as programed in the IDB field. See “PS/2 Control Register (PSCON)” on
2. ‘n’ is defined in “PS/2 Control Register (PSCON)” on page 127.
page 127.
PS/2 Interface Timing
PSCLK1-4
PSCLK1-4
PSDAT1-4
PSDAT1-4
Figure
136
136
136
136
137
137
138
138
Input setup time PSDAT1-3
Input hold time PSDAT1-3
PSCLK1-3 low time
PSCLK1-3 high time
Output valid time
PSDAT1-4
Output hold time PSDAT1-4
Output active time PSCLK1-4 After RE CLK
Output inactive time
PSCLK1-4
Description
t
PSDOh
t
PSDIs
(Continued)
Figure 137. PS/2 Transmit Timing
t
Figure 136. PS/2 Receive Timing
PSDOv
PS/2 Output Timing
PS/2 Input Timing
t
t
Before FE PSCLK1-3
After RE PSCLK1-3
At 0.8V (Both Edges)
At 2.0V (Both Edges)
After FE PSCLK1-4
After FE PSCLK1-4
After RE CLK
PSCLKl
PSCLKl
Reference Conditions
354
t
PSDIh
(n+1)t
(n+1)t
t
t
PSCLKh
PSCLKh
Min
CLK
CLK
0
0
0
1
1
ns
ns
(n + 6)
+ 14
Max
17
17
2
*
t
ns
CLK
Unit
Revision 1.2
ns
ns
ns
ns
ns
-
-
-
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