- SS-HQ1 Application Notes -
Ver.1.0.0 January 7, 2005
5
2.2. Clock Configuration
2.2.1. 1 clock / digital encoder system configuration
DSP can be operated by using only one clock in this system. The clock for driving system in DSP is generated
by supplying the clock for encoder (ECK).
Fig 2.2-1 Signal path of 1 clock / digital encoder system configuration
2.2.2. 2 clock / ECK master - MCK PLL system configuration
DSP can be operated by using both the clock (ECK) which is for encoder oscillated by the crystal and the
clock(MCK) which is for driving system oscillated by the PLL.
Fig 2.2-2 Signal path of 2 clock / ECK master - MCK PLL system
CCD
CDS
AGC
CXA2096N
CXD3172AR
EEPROM
Y analog output
Signal
Control signal
C analog output
Switches
TG
V-Driver
EVR
A/D
D/A
D/A
DSP
PC
External
Microcomputer
RS-232C
X'tal
ECK
RS-232C
Level Shift
CCD
CDS
AGC
CXA2096N
CXD3172AR
EEPROM
Y analog output
Signal
Control signal
C analog output
Switches
TG
V-Driver
EVR
A/D
D/A
D/A
DSP
PC
External
Microcomputer
RS-232C
X'tal
ECK
RS-232C
Level Shift
MCK
VCO
LPF
PCOMP