lm8328tmx National Semiconductor Corporation, lm8328tmx Datasheet - Page 30

• Manufacturer Part Number: lm8328tmx
• Description: Mobile I/o Companion Supporting Keyscan, I/o Expansion Pwm, And Access.bus Host Interface
• Manufacturer: National Semiconductor Corporation

www.national.com
13.3.8 CLKEN - Clock Enable Register
13.3.9 AUTOSLIP - Autosleep Enable Register
13.3.10 AUTOSLPTI - Auto Sleep Time Register
Register - Name
Register - Name
Register - Name
AUTOSLPTIH
UPTIME[10:8]
AUTOSLPTIL
UPTIME[7:0]
Bit - Name
Bit - Name
Bit - Name
AUTOSLP
(reserved)
(reserved)
(reserved)
(reserved)
ENABLE
KBDEN
CLKEN
TIMEN
Address
Address
Address
15:11
0x8A
0x8B
0x8C
0x8D
10:8
Bit
7:3
Bit
7:1
Bit
7:0
2
1
0
0
TABLE 49. AUTOSLPTI - Auto Sleep Time Register
TABLE 48. AUTOSLIP - Autosleep Enable Register
TABLE 47. CLKEN - Clock Enable Register
Default
Default
Default
Type
Type
Type
0xFF
0x00
0x00
R/W
R/W
R/W
0x0
0x0
Controls the clock to different functional units. It shall be used to
enable the functional blocks globally and independently.
(reserved)
PWM Timer 0, 1, 2 clock enable
0: Timer 0, 1, 2 clock disabled
1: Timer 0, 1, 2 clock enabled.
(reserved)
Keyboard clock enable (starts/stops key scan)
0: Keyboard clock disabled
1: Keyboard clock enabled
This register controls the Auto Sleep function of the LM8328 device
(reserved)
Enables automatic sleep mode after a defined activity time stored in
the AUTOSLPTI register
1: Enable entering auto sleep mode
0: Disable entering auto sleep mode
This register defines the activity time. If this time passes without any
processing events then the device enters into sleep-mode, but only if
AUTOSLP.ENABLE bit is set to 1.
(reserved)
Values of UPTIME[10:0] match to multiples of 4ms:
0x00: no autosleep, regardless if AUTOSLP.ENABLE is set
0x01: 4ms
0x02: 8ms
0x7A: 500 ms
0xFF: 1020 ms (default after reset)
0x100: 1024 ms
0x7FF: 8188 ms
30
Register Function
Register Function
Register Function
Bit Function
Bit Function
Bit Function