Cypress S6J3200 Series, Manual

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CHAPTER 22:Media Local Bus Interface (MediaLB)
S6J3200 Series Hardware Manual Document Number: 002-04852 Rev. *G 871
4.14.
MediaLBn Channel Current Buffer Configuration Register
(MLBn_CCBCR0 - MLBn_CCBCR15)
MediaLBn Channel n Current Buffer Configuration Register (MLBn_CCBCRn) indicates the address
pointer and buffer length of the Current Buffer in system memory for the logical channel n when
configured for DMA Mode. When configured for IO Mode it is receive data buffer. There are 16 such
registers corresponding to 16 logical MediaLB channels. The definition of the bit fields in the
MLBn_CCBCRn register depends on the selected channel type.
REGISTER_NAME YOURPERIn_CSRi
OFFSET 0 + i*4
ACCESS_SIZE B H W
MULTIPLE 0:15
NUMERIC_TYPE
OTHER
MediaLB Channel Current Buffer Configuration Register (MLBn_CCBCR0 -
BIT_OFFSET 31 30 29 28 27 26 25 24
BIT_NAME BCA[15] BCA[14] BCA[13] BCA[12] BCA[11] BCA[10] BCA[9] BCA[8]
ACCESS_TYPE R,WX R,WX R,WX R,WX R,WX R,WX R,WX R,WX
PROT_TYPE
INITIAL_VALUE 0 0 0 0 0 0 0 0
BIT_OFFSET 23 22 21 20 19 18 17 16
BIT_NAME BCA[7] BCA[6] BCA[5] BCA[4] BCA[3] BCA[2] BCA[1] BCA[0]
ACCESS_TYPE R,WX R,WX R,WX R,WX R,WX R,WX R,WX R,WX
PROT_TYPE
INITIAL_VALUE 0 0 0 0 0 0 0 0
BIT_OFFSET 15 14 13 12 11 10 9 8
BIT_NAME BFA[15] BFA[14] BFA[13] BFA[12] BFA[11] BFA[10] BFA[9] BFA[8]
ACCESS_TYPE R,WX R,WX R,WX R,WX R,WX R,WX R,WX R,WX
PROT_TYPE
INITIAL_VALUE 0 0 0 0 0 0 0 0
BIT_OFFSET 7 6 5 4 3 2 1 0
BIT_NAME BFA[7] BFA[6] BFA[5] BFA[4] BFA[3] BFA[2] BFA[1] BFA[0]
ACCESS_TYPE R,WX R,WX R,WX R,WX R,WX R,WX R,WX R,WX
PROT_TYPE
INITIAL_VALUE 0 0 0 0 0 0 0 0
[bit31:16] BCA[15:0] : Buffer Current Address
This bit field has different interpretations for DMA mode and IO mode.
In DMA mode, the BCA field defines a 16-bit address pointer, which identifies the lower half of the
beginning address of the Current Buffer in system memory. The BCA[15:2] bits are loaded from