z8f1601 ZiLOG Semiconductor, z8f1601 Datasheet - Page 146

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z8f1601

Manufacturer Part Number
z8f1601
Description
Z8 Encore!? Microcontroller With Flash Memory And 10-bit A/d Converter
Manufacturer
ZiLOG Semiconductor
Datasheet

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Table 74. DMAx Start/Current Address Low Byte Register (DMAxSTART)
Table 75. DMAx End Address Low Byte Register (DMAxEND)
PS017609-0803
RESET
RESET
FIELD
FIELD
ADDR
ADDR
BITS
BITS
R/W
R/W
DMAx End Address Low Byte Register
DMA_ADC Address Register
R/W
R/W
X
X
7
7
DMA_START—DMAx Start/Current Address Low
These bits, with the four lower bits of the DMAx_H register, form the 12-bit Start/Current
address. The full 12-bit address is given by {DMA_START_H[3:0], DMA_START[7:0]}.
The DMAx End Address Low Byte register, in conjunction with the DMAx_H register,
forms a 12-bit End Address.
DMA_END—DMAx End Address Low
These bits, with the four upper bits of the DMAx_H register, form a 12-bit address. This
address is the ending location of the DMAx transfer. The full 12-bit address is given by
{DMA_END_H[3:0], DMA_END[7:0]}.
The DMA_ADC Address register points to a block of the Register File to store ADC con-
version values as illustrated in Table 76. This register contains the seven most-significant
bits of the 12-bit Register File addresses. The five least-significant bits are calculated from
the ADC Analog Input number (5-bit base address is equal to twice the ADC Analog Input
number). The 10-bit ADC conversion data is stored as two bytes with the most significant
byte of the ADC data stored at the even numbered Register File address.
R/W
R/W
X
X
6
6
R/W
R/W
X
X
5
5
R/W
R/W
X
X
4
DMA_START
4
FB3H, FHBH
FB4H, FBCH
DMA_END
Z8F640x/Z8F480x/Z8F320x/Z8F240x/Z8F160x
R/W
R/W
X
X
3
3
Direct Memory Access Controller
R/W
R/W
X
X
2
2
R/W
R/W
X
X
1
1
Z8 Encore!
R/W
R/W
X
X
0
0
®
128

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