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參數(shù)資料
| 型號(hào)： | D6571E |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Chip for an All-Digital Telephone Answering Machine with Flash Memory Interface |
| 中文描述： | 芯片的全數(shù)字電話應(yīng)答機(jī)與快閃記憶體介面 |
| 文件頁(yè)數(shù)： | 104/117頁(yè) |
| 文件大?。?/td> | 551K |
| 代理商： | D6571E |
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D6571E Data Sheet
DS6571E.2
DSP GROUP, INC., 3120 SCOTT BOULEVARD
SANTA CLARA, CA 95054 PH: 408 986-4300 FAX: 408 986-4490
100
Each frame the Host issues C1 and C2 commands. The actual data transfer starts after S2 is received by the Host. The
D6571E checks bits 15 -12 in each C1 and C2 command for the correct code. If an incorrect code is detected, the D6571E
will return to Idle mode. To exit this mode, the D6571E should issue an IDLE command. When an IDLE command is
received, the D6571E will update the message directory and return to Idle mode.
4. DATA RETRIEVAL (From Flash to Host)
Command (C1):
1 1 1 1
1 0
0 0 0
MESSAGE NUMBER
(15 - 12) (11 - 10) (9 - 7) (6 - 0)
Status (S1):
1 1 1 1
1 0
BIN
0
END OF
MESSAGE
(7) (6 - 0)
MESSAGE NUMBER
(15 - 12) (11 - 10) (9) (8)
BIN
= 0: voice message
= 1: binary message
END OF MESSAGE = 1 - End of message has been reached.
Note
: Data Retrieval is not available for PCM messages
BIN = 0
Command (C2):
0 0 0 1
0 0 0 0
NUMBER OF BYTES
(15 - 12) (11 - 8) (7 - 0)
NUMBER OF BYTES - Indicates the number of bytes that the Host expects to receive from the D6571E.
Status (S2):
0 0 0 1
0 0 0 0
TRANSFER NUMBER OF BYTES
(15 - 12) (11 - 8) (7 - 0)
TRANSFER NUMBER OF BYTES - Indicates the actual number of bytes that the D6571E will write to the Host.
After the Host receives status S2, the actual data transfer begins. The Host sends the high byte of the Data Transfer
command to the D6571E. The D6571E responds with compressed data in the high byte of the status word (Data
Transfer status). During the data transfer phase, the HI\LO pin (pin 4) should be set to high.
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