SN32F280 Series
32-Bit Cortex-M0 Micro-Controller
SONiX TECHNOLOGY CO., LTD
Page 226
Version 1.1
Bit
Name
Description
Attribute
Reset
31:20
Reserved
R
0
19:16
WEHOLD[3:0]
Counts for Write Hold Time
Write Hold Time = WEHOLD[3:0] * EBI_PCLK
R/W
0xF
15:14
Reserved
R
0
13:8
WESTRB[5:0]
Counts for Write Strobe Time
0: Write Strobe Time = 1 * EBI_PCLK
N: Write Strobe Time = N * EBI_PCLK
R/W
0x3F
7:4
Reserved
R
0
3:0
WESETUP[3:0]
Counts for Write Setup Time
Write Setup Time = WESETUP[3:0] * EBI_PCLK
R/W
0xF
18.7.7 EBI Polarity register n (EBI_PRn) n=0~3
Address offset: 0x40, 0x44, 0x48, 0x4C
Bit
Name
Description
Attribute
Reset
31:6
Reserved
R
0
5
UBLBPOL
Upper Byte and Lower Byte Polarity
0: UB and LB are active low/idle high
1: Reserved
R
0
4
ARDYPOL
Asynchronous Ready Polarity
0: ARDY is active low
1: ARDY is active high
R/W
0
3
ALEPOL
Address Latch Polarity
0: ALE is active low/idle high
1: Reserved
R
0
2
WEPOL
Write Enable Polarity
0: WE is active low/idle high
1: Reserved
R
0
1
OEPOL
Output Enable Polarity
0: OE is active low/idle high
1: Reserved
R
0
0
CSPOL
Chip Selection Polarity
0: CS is active low/idle high
1: Reserved
R
0
18.7.8 EBI Interrupt Enable register (EBI_IE)
Address offset: 0x50
Bit
Name
Description
Attribute
Reset
31:6
Reserved
R
0
5
DMATCIE
DMA transfer complete interrupt enable bit
0: Disable
1: Enable
R/W
0
4
DMAHTIE
DMA half-transfer interrupt enable bit
0: Disable
1: Enable
R/W
0
3
RWERREN
Interrupt for read/write error enable bit
Ex: Read/Write during EBIARDY is busy
0: Disable
1: Enable
R/W
0
2
SMRSTEN
Interrupt for issuing a transaction during EBI state machine reset
period enable bit.
0: Disable
R/W
0