參數(shù)資料
型號: 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)字電話應答機與快閃記憶體介面
文件頁數(shù): 71/117頁
文件大?。?/td> 551K
代理商: D6571E
D6571E Data Sheet
DS6571E.2
DSP GROUP, INC., 3120 SCOTT BOULEVARD
SANTA CLARA, CA 95054 PH: 408 986-4300 FAX: 408 986-4490
69
TEST MODE = 1011 (GPIO Access)
Command (C1):
1100
(15 - 12)
WR
= 0: read current setting
= 1: write new setting
DIR/VALUE
= 0: read/write value of the pin
= 1: read/write configuration of the pin
Each bit of the C2 command (for WR = 1) and S1 status represents GPIO of the D6571E. The following is a bit
assignment of the C2/S1.
Bit Assignment:
0 0 0 0 0 0 0 0 0 0
(15 -6)
WR = 0
Command (C1):
1100
(15 - 12)
(11 - 8)
Status (S1):
D A T A
1011
WR/RD\
DIR/VALUE\
000000
(11 - 8)
(7)
(6)
(5 - 0)
GPIO
5
(5)
4
(4)
3
(3)
2
(2)
1
(1)
0
(0)
1011
0
DIR/VALUE\
0 0 0 0 0 0
(7)
(6)
(5 - 0)
(15 - 0)
The meaning of the bits in the status S1 depending on the bit DIR/VALUE of the C1 command.
DIR/VALUE\
Meaning of the status bit
0
For pins configured as inputs:
= 0: input pin reads low level
= 1: input pin reads high level
For pins configured as outputs:
= 0: currently pin outputs low level
= 1: currently pin outputs high level
1
= 0: currently pin is configured as input
= 1: currently pin is configured as output
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