參數(shù)資料
型號: UPD31172F1-48-FN
廠商: NEC Corp.
英文描述: VRC4172TM COMPANION CHIP FOR VR4121TM
中文描述: VRC4172TM伴侶芯片VR4121TM
文件頁數(shù): 31/44頁
文件大小: 278K
代理商: UPD31172F1-48-FN
Data Sheet U14388EJ2V0DS00
31
μ
PD31172
(c)
During ECP normal-direction transfer
Parameter
Symbol
Conditions
MIN.
MAX.
Unit
CD (7:0), AUTOFEED# setup time
t
10
1 T
2 T
ns
BUSY response time (from STROBE#
)
t
11
0
ns
STROBE# response time
t
12
2 T
4 T
ns
BUSY response time (from STROBE#
)
t
13
0
ns
CD (7:0) hold time
t
14
2 T
4 T
ns
STROBE# setup time
Note
t
15
3 T
6 T
ns
Note
When the FIFO buffer is empty, this signal is held at a high level.
Remark
T: Parallel interface internal clock cycle (41.6 ns (MIN.))
STROBE#
(output)
BUSY
(input)
t
10
Valid data
t
11
t
12
t
13
t
14
t
15
CD (7:0)
AUTOFEED#
(output)
(d)
During ECP reverse-direction transfer
Parameter
Symbol
Conditions
MIN.
MAX.
Unit
CD (7:0), BUSY setup time
t
16
0
ns
AUTOFEED# response time
Note
(from ACK#
)
t
17
3 T
ns
ACK# response time
t
18
0
ns
AUTOFEED# response time (from ACK#
)
t
19
5 T
ns
CD (7:0) hold time
t
20
0
ns
ACK# setup time
t
21
0
ns
Note
When the FIFO buffer is full, this signal is held at a low level.
Remark
T: Parallel interface internal clock cycle (41.6 ns (MIN.))
ACK# (input)
AUTOFEED#
(output)
t
16
Valid data
t
17
t
18
t
19
t
20
t
21
CD (7:0)
BUSY (input)
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