Chapter 4 Name And Function Of Each Part - Epson S 1C63 Series Manual

CHAPTER 4: NAME AND FUNCTION OF EACH PART
4 N
CHAPTER
This chapter describes the name and function of each part of the S5U1C63004P board.
SEIKO EPSON CORP.
(1) RESET switch
This switch resets the internal circuits of the S5U1C63004P board, and supplies a reset signal to the
ICE.
(2) Register monitor LED
The LED lights up when the corresponding register contains logic 1 and goes out when the register
contains logic 0.
(3) Register monitor pin
The pin is driven high when the corresponding register contains logic 1 and driven low when the
register contains logic 0.
(4) CR oscillation frequency monitor pin
This pin allows you to monitor on an oscilloscope the clock waveform generated by the CR oscillation
circuit. Output on this pin is always active regardless of how the oscillation circuit is controlled.
6
AME AND
(3)
fOSC3 ( CR )
SVDS3
VCCHG
LPWR SVDON SVDS2
(2) (7)
Fig. 4.1 Top view of the S5U1C63004P board
No. Name No. Name
1 VDC 5 HLON
2 OSCC 6 VDSEL
3 CLKCHG 7 VCSEL
4 DBON 8 SVD0
Name
GND Ground (V
f (CR) OSC1 CR oscillation clock
OSC1
f (CR) OSC3 CR oscillation clock
OSC3
F
UNCTION OF
(4)
fOSC1 ( CR )
GND
OSC3 ( CR ) Adj
VSVD
SVDS1 VCSEL HLON CLKCHG VDC
OSC1 ( CR ) Adj
SVDS0 VDSEL DBON OSCC
No. Name No.
9 SVD1 13
10 SVD2 14
11 SVD3 15
12 SVDON 16
Function
)
SS
EPSON
S5U1C63004P MANUAL (PERIPHERAL CIRCUIT
BOARD FOR S1C63454/63455/63458/63466)
E P
ACH ART
(5)
VLCD ( V2V/V3V )
RESET
Name
Unused
LPWR
VCCHG
Unused
(6)
(1)