S1R72105 Technical Manual
Rev.1.0
EPSON
81
8.4.3 Port Interface
8.4.3.1 DMA Read (PSLV=1: Slave mode)
Symbol Specification Min.
Typ.
Max.
Unit
T
301
XPWR
→
XPDACK
↓
XPDACK setup time
5
-
- ns
T
302
XPDACK
↑
→
XPWR
XPDACK hold time
5
- - ns
T
303
XPRD
↓
→
PDREQ negate
PDREQ negate delay time
10
-
37
ns
T
304
XPDACK
↓
→
XPRD
↓
XPRD setup time
0
- - ns
T
305
XPRD
↓
→
XPRD
↑
XPRD assert pulse width
30
- - ns
T
306
XPRD
↑
→
XPRD
↓
XPRD negate pulse width
30
- - ns
T
307
XPRD
↑
→
XPDACK
↑
XPRD hold time
0
- - ns
T
308
XPRD
↓
→
PD
Data output delay time Note 1
0
-
25
ns
T
309
XPRD
↑
→
PD(Hi-Z)
Data bus negate time Note 1
6
- 40 ns
Note 1: Data is output to PD only while both XPDACK and XPRD are asserted.
PD is always in Input mode except such time.
PDREQ(0)
(PRQLV=1)
XPDACK(I)
XPRD(I)
PD15-0(0)
XPWR(I)
Direction of data transfer
T
304
T
305
T
306
T
303
T
307
T
301
T
308
T
309
T
302
Prosessor
S1R72105
HOST