20-668-0011 Rabbit Semiconductor, 20-668-0011 Datasheet - Page 192

• Manufacturer Part Number: 20-668-0011
• Description: IC MPU RABIT3000A 55.5MHZ128LQFP
• Manufacturer: Rabbit Semiconductor

Specifications of 20-668-0011

• 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
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 55.5 MHz
• Operating Supply Voltage: 1.8 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 55 C
• Number Of Programmable I/os: 56
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 316-1061

21.4 Register Descriptions
182
(Write-
(Write-
(Read-
(Read-
(Read-
(Read-
Bit(s)
only)
only)
only)
only)
only)
only)
Quad Decode Control/Status Register
7
6
5
4
3
2
1
0
Value
0
1
0
1
0
1
0
1
0
1
0
1
Quadrature Decoder 2 did not increment from 0xFF (0x3FF in 10-bit mode).
Quadrature Decoder 2 incremented from 0xFF (0x3FF in 10-bit mode) to 0x00.
This bit is cleared by a read of his register.
Quadrature Decoder 2 did not decrement from 0x00.
Quadrature Decoder 2 decremented from 0x00 to 0xFF (0x3FF in 10-bit mode).
This bit is cleared by a read of this register.
This bit always reads as zero.
No effect on Quadrature Decoder 2.
Reset Quadrature Decoder 2 to 0x00 without causing an interrupt.
Quadrature Decoder 1 did not increment from 0xFF (0x3FF in 10-bit mode).
Quadrature Decoder 1 incremented from 0xFF (0x3FF in 10-bit mode) to 0x00.
This bit is cleared by a read of this register.
Quadrature Decoder 1 did not decrement from 0x00.
Quadrature Decoder 1 decremented from 0x00 to 0xFF (0x3FF in 10-bit mode).
This bit is cleared by a read of this register.
This bit always reads as zero.
No effect on Quadrature Decoder 1.
Reset Quadrature Decoder 1 to 0x00 without causing an interrupt.
(QDCSR)
Description
Rabbit 3000 Microprocessor User’s Manual
(Address = 0x0090)