BIXOLON SRP-F310/312 Thermal Printer Head Circuit, STB1, STB2, Cpu, DATA#1,2 256bits

SRP-F310/312

4-3-9 Thermal Printer Head Circuit

First, the CPU sends a Serial Clock and Serial Data 256bits(32Bytes) to the Shift Register of the Thermal Printer. The Serial Data are stored to each Shift Register in the Thermal Printer. Because the Data#1 Pin and the Data#2 pin are shorted on Main PCB, the Data(256bits) are stored in both Shift Register#1 and #2. Second, the CPU send a Latch Signal to the Thermal Printer. Then, the Data of both Shift Register#1 and #2 (256*2=512bits) are moved to the Latch Register. After that, the CPU sends a Strobe Signal to the Thermal Printer. Then, the Printer outputs the Serial Data. Each Strobe Signal manages the Printer Dot.

STB No.	DOT No.	DOTs/STB	SRP-F310/312 Strobe Processing
STB1	1 ~ 256	256	The content of data is same.
STB2	257 ~ 512	256

CPU

SPEAr300

	[Figure 4-13 Thermal Printer Block Diagram]
	256 CLK
CLK
DATA#1,2	256bits	256bits	256bits
/LATCH
		Printing(1~256)	Printing(1~256)
STROBE1
			Printing(257~512)
STROBE2
	[Figure 4-14 Thermal Printer Timing Waveform]

Rev. 1.00 - 44 -