20-668-0024 Rabbit Semiconductor, 20-668-0024 Datasheet - Page 200

• Manufacturer Part Number: 20-668-0024
• Description: IC CPU RABBIT4000 128-LQFP
• Manufacturer: Rabbit Semiconductor

Specifications of 20-668-0024

• Processor Type: Rabbit 4000 8-bit
• Speed: 60MHz
• Voltage: 2.5V, 2.7V, 3V, 3.3V
• Mounting Type: Surface Mount
• Package / Case: 128-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Other names: 20-668-0022; 316-1078

190
Bit(s)
DMA Master Request 0 Control Register
7:6
4:3
2:0
5
Value
000
001
010
100
101
011
110
111
00
01
10
11
00
01
10
11
External DMA Request 0 disabled.
External DMA Request 0 enabled from Parallel Port D2.
External DMA Request 0 enabled from Parallel Port E2.
External DMA Request 0 enabled from Parallel Port E6.
This bit is reserved and should be written with zero.
External DMA Request 0 falling-edge triggered. One transfer per request.
External DMA Request 0 rising-edge triggered. One transfer per request.
External DMA Request 0 active low. Transfers continue while low.
External DMA Request 0 active high. Transfers continue while high.
External DMA Request 0 supplied to DMA Channel 0.
External DMA Request 0 supplied to DMA Channel 1.
External DMA Request 0 supplied to DMA Channel 2.
External DMA Request 0 supplied to DMA Channel 3.
External DMA Request 0 supplied to DMA Channel 4.
External DMA Request 0 supplied to DMA Channel 5.
External DMA Request 0 supplied to DMA Channel 6.
External DMA Request 0 supplied to DMA Channel 7.
(DMR0CR)
Description
Rabbit 4000 Microprocessor User’s Manual
(Address = 0x0106)