參數(shù)資料
型號: TSB43AA82A1
廠商: Texas Instruments, Inc.
英文描述: 1394 integrated PHY and link layer controller(1394集成PHY和鏈路層控制器)
中文描述: 1394綜合物理層和鏈路層控制器(1394集成物理層和鏈路層控制器)
文件頁數(shù): 14/146頁
文件大?。?/td> 597K
代理商: TSB43AA82A1
14
1.4
1.4.1
Terminal Functions
DMA/Bulky Data Interface
TERMINAL
PGE NO.
13
41
22
I/O
DESCRIPTION
NAME
GGW NO.
G1
T4
L1
ATACK
BDACK
BDIBUSY/
BDREQ(SCSI)
O
I
O
ATAPI acknowledge
DMA acknowledge
DMA input busy
BDICLK
8
E1
I
DMA input clock. BDICLK must be provided when bulky data
interface is in synchronous mode. See Notes 1 and 2.
BDIEN/
BDWR(SCSI)
23
L2
I
DMA input enable
BDIF[2:0]
BDIO[15:0]
17, 16, 14
53, 50, 49, 48, 46,
45, 44, 42, 40, 39,
37, 36, 34, 30, 29, 28
J1, H2, H1
T8, U7, T7, R7, R6,
U5, T5, U4, R4, U3,
U2, T1, R1, N3, N2,
N1
E2
I/O
I/O
DMA input flag. Indicates order of the input data on stream.
DMA data
BDITRIS
7
I
BDIO 3-state set. When BDITRIS is set high, BDIBUSY, BDOAVAIL,
and ATACK are initially 3-state. See Note 3.
BDOAVAIL/
BDRW(SCSI)
25
M1
O
BDOAVAIL is the DMA output available. In SCSI mode, BDRW is
DMARW(90h bit0). It indicates the current state (read or write) of the
bulky interface.
DMA clock output based on the 49.152-MHz PHY clock
BDOCLK clock output disable. Tie high to disable BDOCLK
DMA output enable
BDOCLK
BDOCLKDIS
BDOEN/
BDRD(SCSI)
12
9
26
G2
F3
M2
O
I
I
BDOF[2:0]
NOTES:
21, 20, 18
K3, K2, J3
O
DMA output flag. Indicates order of the output data on stream.
1. Any frequency up to 40 MHz can be used. The maximum frequency is not required to match the transfer speed frequency.
2. When in synchronous mode, BDICLK is required. The BDICLK input is ignored when in asynchronous mode.
MODE
CLOCK
Asynchronous
BDOCLK
Synchronous
BDICLK
3. BDORst/BDIRst (94h) activates BDIBUSY, BDOAVAIL, and ATACK.
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