參數(shù)資料
型號(hào)： DS3131
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： Telecom IC:Other
英文描述： SPECIALTY TELECOM CIRCUIT, PBGA256
封裝： 27 X 27 MM, PLASTIC, BGA-256
文件頁數(shù)： 145/174頁
文件大小： 1261K
代理商： DS3131
DS3131
72 of 174
Register Name:
TFBPIS
Register Description:
Transmit FIFO Block Pointer Indirect Select
Register Address:
0990h
Bit #
7
6
5
4
3
2
1
0
Name
BLKID7
BLKID6
BLKID5
BLKID4
BLKID3
BLKID2
BLKID1
BLKID0
Default
0
Bit #
15
14
13
12
11
10
9
8
Name
IAB
IARW
reserved
BLKID8
Default
0
Note:
Bits that are underlined are read-only; all other bits are read-write.
Bits 0 to 8/Block ID (BLKID0 to BLKID8)
000000000 (000h) = block number 0
111111111 (1ffh) = block number 511
Bit 14/Indirect Access Read/Write (IARW). When the host wishes to read data from the internal transmit block
pointer RAM, this bit should be written to 1 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 is set to 1. Once the data is
ready to be read from the TFBP register, the IAB bit is set to 0. When the host wishes to write data to the internal
transmit block pointer RAM, this bit should be written to 0 by the host. This causes the device to take the data that
is currently present in the TFBP register and write it to the channel location indicated by the BLKID bits. When
the device has completed the write, the IAB is set to 0.
Bit 15/Indirect Access Busy (IAB). When an indirect read or write access is in progress, this read-only bit is set
to 1. During a read operation, this bit is set to 1 until the data is ready to be read. It is set to 0 when the data is
ready to be read. During a write operation, this bit is set to 1 while the write is taking place. It is set to 0 once the
write operation has completed.
Register Name:
TFBP
Register Description:
Transmit FIFO Block Pointer
Register Address:
0994h
Bit #
7
6
5
4
3
2
1
0
Name
TBP7
TBP6
TBP5
TBP4
TBP3
TBP2
TBP1
TBP0
Default
Bit #
15
14
13
12
11
10
9
8
Name
reserved
TBP8
Default
Note:
Bits that are underlined are read-only; all other bits are read-write
.
Bits 0 to 8/Block Pointer (TBP0 to TBP8). These nine bits indicate which of the 512 blocks is the next block in
the link list chain. A block is not allowed to point to itself.
000000000 (000h) = block 0 is the next linked block
111111111 (1ffh) = block 511 is the next linked block
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