
140721
PRODUCT
MANUAL
PCM-MIO-G-1 19
7
6
5
4
3
2
1
0
DATA_LO
12
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)
12
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
13
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)
13
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)
14
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)
14
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
15
W
X
X
D/A2 SELECT
READBACK
ENABLE
REGISTER
SELECT
DATA DRQ
ENABLE (4)
CMD DRQ
ENABLE (4)
INTERRUPT
ENABLE (4)
STATUS
(5)
15
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)
IRQ
REGISTER
(6)
15
R
DATA READY
DATA DMA
REQUEST
PENDING (4)
CMD DMA
REQUEST
PENDING (4)
DA2 IRQ
PENDING
DIO IRQ
PENDING
DA/1 IRQ
PENDING
AD/2 IRQ
PENDING
AD/1 IRQ
PENDING
Address (Base+)
Read/Write
Register
Notes: (1) Accessed when READBACK ENABLE (BASE +15 bit 4) = 1
(2) Accessed when REGISTER SELECT (BASE +15 bit 3) = 0
(3) Accessed when REGISTER SELECT (BASE +15 bit 3) = 1
(4) 0=Disabled, 1=Enable
D/A2 - Starting at BASE +12
As shown in the table below, interface to the 2nd device is almost identical to the first with a change in the base address.
The RESOURCE ENABLE register does contain an additional register select bit, MASTER IRQ / DA2 SELECT. If this bit
is set to 1, reading BASE +15 will result in the status of the Master Interrupt Status Register.
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