參數資料
型號: TSB43AA82PGE
廠商: TEXAS INSTRUMENTS INC
元件分類: 微控制器/微處理器
英文描述: 2 CHANNEL(S), 400M bps, SERIAL COMM CONTROLLER, PQFP144
封裝: PLASTIC, QFP-144
文件頁數: 46/146頁
文件大?。?/td> 770K
代理商: TSB43AA82PGE
14
1.4
Terminal Functions
1.4.1
DMA/Bulky Data Interface
TERMINAL
I/O
DESCRIPTION
NAME
PGE NO.
GGW NO.
I/O
DESCRIPTION
ATACK
13
G1
O
ATAPI acknowledge
BDACK
41
T4
I
DMA acknowledge
BDIBUSY/
BDREQ(SCSI)
22
L1
O
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]
17, 16, 14
J1, H2, H1
I/O
DMA input flag. Indicates order of the input data on stream.
BDIO[15:0]
53, 50, 49, 48,
46, 45, 44, 42,
40, 39, 37, 36,
34, 30, 29, 28
T8, U7, T7, R7,
R6, U5, T5, U4,
R4, U3, U2, T1,
R1, N3, N2, N1
I/O
DMA data
BDITRIS
7
E2
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.
BDOCLK
12
G2
O
DMA clock output based on the 49.152-MHz PHY clock
BDOCLKDIS
9
F3
I
BDOCLK clock output disable. Tie high to disable BDOCLK
BDOEN/
BDRD(SCSI)
26
M2
I
DMA output enable
BDOF[2:0]
21, 20, 18
K3, K2, J3
O
DMA output flag. Indicates order of the output data on stream.
NOTES:
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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