tb62719af TOSHIBA Semiconductor CORPORATION, tb62719af Datasheet - Page 13

• Manufacturer Part Number: tb62719af
• Description: 16ch Constant Current Drivers And Controller For Full-color Led Modules And Panels
• Manufacturer: TOSHIBA Semiconductor CORPORATION

Explanation of Operation and Truth Tables
Serial Data Transfer: Standard Current Adjustment Using DAC1 and DAC2
(data register SI REG1 [7:0])
Serial Data Transfer Timing
(standard current adjustment, SI SEL = H, single device)
Serial Data Transfer Timing
(standard current adjustment, SI SEL = H, two devices connected in cascade)
(1
Process SI DATA
SI LATCH
(1
SO DATA
SI LATCH
st
SO DATA
SI DATA
st
SI DATA
1
2
SI SEL
SI CLK
RESET
device)
SI CLK
RESET
SI SEL
device)
H or L
Indicates undefined logic state
after reset and before input.
Indicates undefined logic state
after reset and before input.
Data reset by
SI CLK
Data reset by
( × 8)
L
SI LATCH
( × 1)
RESET
SO DATA is synchronized with 8
cycle after reset, and the first data is out.
RESET
L
= L
= L
SI SEL
H
H
No change
SO DATA
13
H or L
Data held on positive edge of SI LATCH after the
data transfer by single device (after 8 clock cycles)
SO DATA is synchronized with 8
reset, and the first data is out.
th
Selects standard current adjustment (8 bits, 2 bits and 6
bits) for input data. When SI REL is high, data is
transferred to SI REG [1] on 8
input.
Holds the data transferred to SI REG [1] on positive
edge of SI Latch.
Set is reflected on standard current adjustment from the
moment when it is held.
clock
Data held on positive edge of SI
LATCH after the data transfer by two
devices (after 16 clock cycles)
Operation and Function
th
th
positive edge of SI CLK
clock cycle after
TB62719AF
2004-05-12