Nokia 8270 서비스 매뉴얼
PAMS Technical Documentation
3. System Module
NSD-5
Issue 1 05/02
Nokia Corporation
Page 37
(a) RC filters with time constant = 100 ns used on these signals for ESD protection.
Table 9: Electrical characteristics of the user interface
Functional Timing
Serial Port Functional Timing
Figures (19) and (20) provide LCD serial interface timing information. Reference 1 gives a
detailed description of the functional timing requirements for the serial port interface.
See Reference 6 for a detailed description and timing of the serial protocol for the
CCONT device. See Reference 1 for a detailed description and timing of the serial proto-
col for the serial LCD device.
detailed description of the functional timing requirements for the serial port interface.
See Reference 6 for a detailed description and timing of the serial protocol for the
CCONT device. See Reference 1 for a detailed description and timing of the serial proto-
col for the serial LCD device.
Figure 19: Serial port transmit timing
Figure 20: Serial port receive timing
UIF_CCONT_SCLK
LCD/CCONT
> 2.24
< 0.62
10 ns
10 ns
serial port clock
UIF_CCONT_SDIO
LCD/CCONT
> 2.24
< 0.62
10 ns
10 ns
serial data
CCONTCSX
CCONT
> 2.24
< 0.62
16 ns
16 ns
chip-select to the
CCONT serial device
CCONT serial device
Parameters
Definition
Minimum
Maximum
Unit
Tcspd
Falling edge to chip select
100
ns
Tcdpd
Falling edge to command/data select
100
ns
Tsdo
Falling edge to data out
0
ns
Signal
To
Signal Level (V)
High Low
Rising
time
Falling
time
Function