
140721
PRODUCT
MANUAL
PCM-MIO-G-1 18
Notes: (1) Accessed when READBACK ENABLE (BASE +11 bit 4) = 1
(2) Accessed when REGISTER SELECT (BASE +11 bit 3) = 0
(3) Accessed when REGISTER SELECT (BASE +11 bit 3) = 1
(4) 0=Disabled, 1=Enable
7
6
5
4
3
2
1
0
DATA_LO
8
R/W
LOW ORDER DATA BYTE
DATA-BIT 7
DATA-BIT 6
DATA-BIT 5
DATA-BIT 4
DATA-BIT 3
DATA-BIT 2
DATA-BIT 1
DATA-BIT 0
READBACK
(1)
8
R
LOW ORDER DATA BYTE
DATA-BIT 7
DATA-BIT 6
DATA-BIT 5
DATA-BIT 4
DATA-BIT 3
DATA-BIT 2
DATA-BIT 1
DATA-BIT 0
DATA_HI
9
R/W
HIGH ORDER DATA BYTE
DATA-BIT 15
DATA-BIT 14
DATA-BIT 13
DATA-BIT 12
DATA-BIT 11
DATA-BIT 10
DATA-BIT 9
DATA-BIT 8
READBACK
(1)
9
R
HIGH ORDER DATA BYTE
DATA-BIT 15
DATA-BIT 14
DATA-BIT 13
DATA-BIT 12
DATA-BIT 11
DATA-BIT 10
DATA-BIT 9
DATA-BIT 8
COMMAND
(2)
10
R/W
COMMAND
CMD-BIT 7
CMD-BIT 6
CMD-BIT 5
CMD-BIT 4
CMD-BIT 3
CMD-BIT 2
CMD-BIT 1
CMD-BIT 0
RESOURCE
(3)
10
R/W
DMA CHANNEL ASSIGNMENT
INTERRUPT ROUTING ASSIGNMENT
IRQ[15-3] 0, 1, 2, 8 AND 13 NOT AVAILABLE
DATA
REGISTER
BIT 1
DATA
REGISTER
BIT 0
DATA
REGISTER
BIT 1
DATA
REGISTER
BIT 0
BIT 3
BIT 2
BIT 1
BIT 0
RESOURCE
ENABLE
11
W
X
X
X
READBACK
ENABLE
REGISTER
SELECT
DATA DRQ
ENABLE (4)
CMD DRQ
ENABLE (4)
INTERRUPT
ENABLE (4)
STATUS
11
R
DATA READY
DATA DMA
REQUEST
PENDING (4)
CMD DMA
REQUEST
PENDING (4)
INTERRUPT
REQUEST
PENDING (4)
REGISTER
SELECT
STATUS
DATA DRQ
ENABLE
STATUS (4)
CMD DRQ
ENABLE
STATUS (4)
INTERRUPT
EANBLE BIT
STATUS (4)
Address (Base+)
Read/Write
Register
D/A Converters
The PCM-MIO contains two Linear Tech LTC-2704 Digital-to-Analog Converter (DAC) devices. Each device is a
4-channel converter with software selectable output span.
D/A1 - Starting at BASE +8
The COMMAND register, RESOURCE register and RESOURCE ENABLE registers are used to configure the D/A device
operation. The specific options of each register are detailed here.
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