lm8322 National Semiconductor Corporation, lm8322 Datasheet - Page 9

• Manufacturer Part Number: lm8322
• Description: Mobile I/o Companion Supporting Key-scan, I/o Expansion, Pwm, And Access.bus Host Interface
• Manufacturer: National Semiconductor Corporation

9.3 CLOCK CONFIGURATION
Table 2 shows the clock configurations available by loading
the clock configuration register with the WRITE_CLOCK com-
The SLOWCLKOUT signal is an alternate function of the pin
used for the KP-Y8 scanning output and the GPIO_03 port. If
SLOWCLKOUT
7
0
SLOWCLKEN
RCPWM
Bit
SLOWCLKOUT
6
Value
00
01
10
11
0
1
0
1
Disable SLOWCLKOUT buffer.
Enable SLOWCLKOUT buffer.
External 32.768 kHz crystal is installed between the XTAL_IN and XTAL_OUT pins.
External 32.768 kHz clock is received on the SLOWCLK pin, or no 32.768 kHz clock
is required.
On-chip RC clock divided by 64 drives the PWM and clock buffer.
Reserved.
Reserved.
External 32.768 kHz clock or crystal drives the PWM and clock buffer.
TABLE 2. Clock Configuration Register
5
0
4
0
9
mand. The WRITE_CLOCK command must be issued only
once during system initialization. This command is used to
override the default settings.
the SLOWCLKOUT function is enabled, these other functions
of the pin are unavailable.
SLOWCLKEN
3
Description
2
0
1
RCPWM
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0