668-0011 Rabbit Semiconductor, 668-0011 Datasheet - Page 220

• Manufacturer Part Number: 668-0011
• Description: IC MPU RABIT3000A 55.5MHZ128LQFP
• Manufacturer: Rabbit Semiconductor

Specifications of 668-0011

• Rohs Status: RoHS non-compliant
• Processor Type: Rabbit 3000 8-Bit
• Speed: 55.5MHz
• Voltage: 2.5V, 2.7V, 3V, 3.3V
• Mounting Type: Surface Mount
• Package / Case: 128-LQFP
• Features: -
• Other names: 316-1043

25.3 Register Descriptions
210
Bits 4:2 GCSR
(Read-
Bit(s)
Clock Select
only)
* Introduced with Rabbit 3000A chip
7:6
4:2
1:0
5
000
001
010
100
101
011
110
111
Global Control/Status Register
Value
xxx
00
00
01
10
11
01
10
11
0
1
32 kHz or fraction
32 kHz or fraction
CPU Clock
No reset or watchdog timer timeout since the last read.
The watchdog timer timed out. These bits are cleared by a read of this register.
This bit combination is not possible.
Reset occurred. These bits are cleared by a read of this register.
No effect on the periodic interrupt. This bit will always be read as zero.
Force a periodic interrupt to be pending.
See table below to decode this field.
Periodic interrupts are disabled.
Periodic interrupts use Interrupt Priority 1.
Periodic interrupts use Interrupt Priority 2.
Periodic interrupts use Interrupt Priority 3.
osc/2
osc/4
osc/6
osc/8
osc/8
osc
GCSR Clock Select Field
32 kHz or fraction
32KHz or fraction
Peripheral
Clock
osc/8
osc/2
osc/4
osc/6
osc
osc
(GCSR)
Description
Rabbit 3000 Microprocessor User’s Manual
Oscillator
Main
off
on
on
on
on
on
on
on
(Address = 0x0000)
short CS option
short CS option
none
short CS option
self-timed option
short CS option
self-timed option
short CS option
short CS option
short CS option
Power-Save CS
if Enabled by
GPSCR
*
*
*