DS3134 datasheet(90/203 Pages) DALLAS

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DS3134

90 of 203

RFBPIS

0910h

5432

BLKID7

BLKID6

BLKID5

BLKID4

BLKID3

BLKID2

BLKID1

BLKID0

IAB

IARW

n/a

BLKID9

BLKID8

Note: Bits that are underlined are read only, all other bits are read-write; default value for all bits is 0.

Bits 0 to 9 / Block ID (BLKID0 to BLKID9).

0000000000 (000h) = Block Number 0

0111111111 (1FFh) = Block Number 511

1111111111 (3FFh) = Block Number 1023

Bit 14 / Indirect Access Read/Write (IARW). When the host wishes to read data from the internal

Receive Block Pointer RAM, this bit should be written to a one by the host. This causes the device to

begin obtaining the data from the block location indicated by the BLKID bits. During the read access, the

IAB bit will be set to one. Once the data is ready to be read from the RFBP register, the IAB bit will be

set to zero. When the host wishes to write data to the internal Receive Block Pointer RAM, this bit

should be written to a zero by the host. This causes the device to take the data that is current present in

the RFBP register and write it to the channel location indicated by the BLKID bits. When the device has

completed the write, the IAB will be set to zero.

Bit 15 / Indirect Access Busy (IAB). When an indirect read or write access is in progress, this read only

bit will be set to a one. During a read operation, this bit will be set to a one until the data is ready to be

read. It will be set to zero when the data is ready to be read. During a write operation, this bit will be set

to a one while the write is taking place. It will be set to zero once the write operation has completed.

RFBP

0914h

5432

RBP7

RBP6

RBP5

RBP4

RBP3

RBP2

RBP1

RBP0

n/a

RBP9

RBP8

Note: Bits that are underlined are read only, all other bits are read-write.

Bits 0 to 9 / Block Pointer (RBP0 to RBP9). These 10 bits indicate which of the 1024 blocks is the next

block in the link list chain. A block is not allowed to point to itself.

0000000000 (000h) = Block 0 is the Next Linked Block

0111111111 (1FFh) = Block 511 is the Next Linked Block

1111111111 (3FFh) = Block 1023 is the Next Linked Block

RFHWMIS

DS3134 データシート(PDF) 90 Page - Dallas Semiconductor

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