3-31
Samsung Electronics
CIRCUIT DESCRIPTION
Repair Manual
3-7 THUNDERBOLT ASIC DESCRIPTION
3-7-1 ENTIRE DESCRIPTION
THUNDERBOLT ASIC is configured with SERIAL INTERFACE INPUT PORT interfacing Main controller, 2 DC-DC Converter
Controllers, Power On Reset Generation Circuit, and Motor drive part.
3-7-2 THUNDERBOLT FUNCTION DESCRIPTION
3-7-2-1 SERIAL INTERFACE INPUT PORT
To MAIN CONTROLLER(S3C46MOX(Jupiter3)), /TBCS,TBCLK,TBDO are connected with MAIN CONTROLLER (S3C46MOX
(Jupiter3)), and see the figure for Timing.
/ TBCS
TBCLK
TBDO
Tcs-sclk
Tcs-sclk
bit 1
bit 2
bit 3
bit 4
bit 5
bit 6
bit 7
bit 8
bit 9
bit 10
bit 11 bit 12 bit 13
SDI stays at
last value
MSB
LSB
Data Latcked on the rising edge of SCLK
time
Tdhd
Tdsu
< Figure 21. SERIAL INTERFACE INPUT Timing Diagram >
Parameter
Description
Min
Typ
Max
Units
Fclk
Serial clock frequency
2.5
4
MHz
Tclh
SCLK high width
125
200
-
nsec
Tcll
SCLK low width
125
200
-
nsec
Tcs-sclk
Delay nCS falling to first SCLK rising
250
800
-
nsec
Tsclk-cs
Delay last SCLK rising edge to nCS rising
250
400
-
nsec
Tdsu
Data valid to SCLK set up time
125
200
-
nsec
Tdhd
Data hold time
125
200
-
nsec
Trd
SDI rise time
5
20
nsec
Tfd
SDI fall time
5
20
nsec
Trc
SCLK rise time
5
20
nsec
Tfc
SCLK fall time
5
20
nsec
< Figure 21-1. SERIAL INTERFACE INPUT Timing Specification >
Summary of Contents for SCX-1100
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