CMX850L8 View Datasheet(PDF) - CML Microsystems Plc
Part Name
Description
MFG CO.
'CMX850L8' PDF : 103 Pages View PDF
Communications Controller
CMX850
1.5.6 Oscillator and Power Management
Each main block of “peripheral” hardware surrounding the 8051 µC core (Modem, CAS detector, A/D
converter, PWM, RTC, WDT, Keyboard encoder) can be individually power saved through their associated
control register, as shown in the table below:
Function:
Oscillator Control
– 11.0592/12.288 MHz
– 32 kHz
oscillator
8051 µC Core
– 5.5 MHz RC
– powersave/active
– idle mode
Auxiliary ADC
CAS and FSK Detect
Keyboard Encoder
PWM Outputs
Real Time Clock (RTC)
Watchdog Timer (WDT)
Controlled by:
OSCCON (9C)
bits 4 and 5
OSCCON (9C)
bit 1
OSCCON (9C)
bits 4 and 5
PCON (87)
bit 1
PCON (87)
bit 2
ADCCON1 (E2)
bit 2 and
ADCCON2 (E3)
bits 1, 2 and 3
CASDET (E9)
bit 7
KBCON (EC)
bits 6 and 7
PWMCON (DD)
bits 6 and 7
RTCCON (FB)
bit 7
WDTCON (F2)
bit 7
Comment:
Needs System Clock to
be active (9C bit 5)
Automatically powers up
VBIAS and Line Input
Amplifier in the Modem.
Also needs System Clock
to be active (9C bit 5)
Needs System Clock to
be active (9C bit 5)
excludes 32 kHz
oscillator
excludes 32 kHz
oscillator
© 2003 CML Microsystems Plc
28
D/850/6
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