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參數(shù)資料
| 型號(hào)： | TFB2022AIMFP |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類(lèi)： | 微控制器/微處理器 |
| 英文描述： | SPECIALTY MICROPROCESSOR CIRCUIT, MQFP240 |
| 封裝： | METAL, QFP-240 |
| 文件頁(yè)數(shù)： | 4/10頁(yè) |
| 文件大小： | 154K |
| 代理商： | TFB2022AIMFP |
SLLS183 AUGUST 1994
4
POPOST OFFICE BOX 655303
HOU DALLAS, TEXAS 75265
Terminal Functions
other module interface signals
TERMINAL
I/O
FROM/TO
DESCRIPTION
NAME
NO.
MS<1:0>
33, 34
O
Module
Memory decode of the host address:
LL
LH
HL
HH
Unselected
Host memory
Host-unit space
CSR space
REFCLK
151
I
Module
Clock input. A 25-MHz, 50%
±
5% duty-cycle signal is recommended; any frequency
between 25 MHz and 33 MHz and duty cycle of 50%
±
5% can be tolerated. REFCLK
determines packet-mode transfer speed.
interface to TFB2002A
TERMINAL
I/O
FROM/TO
DESCRIPTION
NAME
NO.
DATAAV*
153
O
TFB2002B IOC
Data available in FIFO. In compelled mode, DATAAV* indicates if any data is in the
FIFO. In packet or burst mode, DATAAV* indicates if a packet or burst data of length
encoded on Futurebus+ packet size or the DL<1:0> lines is available.
DMAMODE
154
I
TFB2002B IOC
DMA operation is occurring. FMODE and HMODE are modified for this function.
ERROR<1:0>
21, 22
O
TFB2002B IOC
Futurebus+ error indicators:
LL
LH
HL
HH
No error
Futurebus+ parity error
Packet longitudinal error
Host-interface-data parity error
FADEC<3:0>
143, 142,
141, 139
O
TFB2002B IOC
Futurebus+ address decode:
LLLL
LLLH
LLHL
LLHH
LHLL
LHLH
LHHL
LHHH
HLLL
HLLH
HLHL
HLHH
HHLL
HHLH
HHHL
HHHH
Unselected
Host memory
Host-extended-unit space
Host CSR
Broadcast mailbox
Reserved
Reserved
Reserved
Mailbox address
Packet-mode-capable memory address
Reserved
Reserved
Reserved
DPU CSR
Broadcast CSR (non-DPU)
Broadcast CSR (DPU)
FIFORST*
19
I
TFB2002B IOC
FIFO reset. FIFORST* resets the FIFO pointers
FACK
133
O
TFB2002B IOC
Futurebus+ acknowledge. Futurebus+ event complete
FMODE<2:0>
138, 137,
136
I
TFB2002B IOC
Futurebus+ mode. FMODE<2:0> indicates to the TFB2022AI what action is to be
taken in the Futurebus+ interface:
LLL
Compelled-mode Futurebus+
LLH
Packet-mode Futurebus+
LHL
Partial transfer
LHH
Disconnect data for master write
HLL
Reserved
HLH
Reserved
HHL
Disconnect data for split requestor
HHH
Reserved
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