D6571E Ver la hoja de datos (PDF) - Unspecified
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D6571E Datasheet PDF : 117 Pages
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D6571E Data Sheet
PIN DESCRIPTIONS
D6571E-11 (DSP)
PIN
Name
No.
HSTDB0 (LSB)
14
HSTDB1
13
HSTDB2
12
HSTDB3
11
HSTDB4
10
HSTDB5
9
HSTDB6
8
HSTDB7 (MSB)
7
HI/ LO
4
HSTRD
5
HSTWR
6
ACK
3
DSPCS
77
ADDRO (LSB)
59
ADDR1
60
ADDR2
61
ADDR3
62
ADDR4
63
ADDR5
64
ADDR6
65
ADDR7
66
ADDR8
67
ADDR9
68
ADDR10
69
ADDR11
70
ADDR12
71
ADDR13
72
ADDR14
2
ADDR15 / CE3
1
CE1
80
CE 0
75
CE2/VPCS
76
ALE/DI
78
CLE/DO
79
MDB0 (LSB)
39
MDB1
40
MDB2
41
MDB3
42
MDB4
43
MDB5
44
MDB6
45
MDB7
46
MDB8
47
MDB9
48
MDB10
49
MDB11
50
MDB12
51
I/O/Z
I/O/Z
I/O/Z
I/O/Z
I/O/Z
I/O/Z
I/O/Z
I/O/Z
I/O/Z
I
I
I
O
I
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
I/O
O
O
O
O
I/O/Z
I/O/Z
I/O/Z
I/O/Z
I/O/Z
I/O/Z
I/O/Z
I/O/Z
I/O/Z
I/O/Z
I/O/Z
I/O/Z
I/O/Z
Description
HOST DATA BUS. The HOST writes commands and reads status to/from the D6571E via this
bus. The HI/ LO pin selects between the low byte and the high byte of the command/status.
This bus is used for input when HSTWR is low, and for output when HSTRD is low.
It has high impedance when HSTWR and HSTRD are high or RESET is high.
Active only during Host Read.
HIGH/LOW BYTE SELECT. When this signal is low, the HOST can read/write the low byte
of the status/command. When high , the high byte is selected.
HOST READ. When low, the HOST reads the low/high byte of the status word.
HOST WRITE. When low the HOST writes commands to the D6571E via HSTDB 0-7.
HOST ACKNOWLEDGE. This pin goes low when the D6571E send a status word to the
HOST. It goes high when the HOST reads the high byte of the status word.
DSP Chip Select (Optional connection to ground recommended, if not used.)
EXTERNAL MEMORY ADDRESS BUS
Chip Enable 3 for flash device or Address 15 for external 64K/ EPROM
Chip Enable 1 for flash device
Chip Enable 0 for flash device
Chip Enable 2 for flash device or Voice Prompt ROM/EPROM Chip Enable
Address Latch Enable for Samsung flash devices; Data Input for Toshiba device
Command Latch Enable for Samsung flash devices; Data Output for Toshiba device
EXTERNAL MEMORY DATA BUS.
DS6571E.2
DSP GROUP, INC., 3120 SCOTT BOULEVARD
7
SANTA CLARA, CA 95054 PH: 408 986-4300 FAX: 408 986-4490
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