W681307 Datasheet, PDF (138/160 Pages) Winbond – USB1.1 CODEC Microprocessor Control Unit with 32KB Mask ROM and 4KB RAM

W681307
CI
DF_CLK level while DF_CSN is non active
-- When CI = 1, DF_CLK is high while DF_CSN is non active.
-- When CI = 0, DF_CLK is low while DF_CSN is non active.
Note: For W25X and W25P serial SPI-Flash, these control bits are all zeros.
16.7.7
DF_FIFO_DATA
Address
0x173C
Access Mode Value At Reset Nominal Value
R/W
00
Bit 7
Bit 6
FIFO_DATA
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
FIFO_DATA [7:0]
TX/RX FIFO Read/Write data.
When write this byte, i.e. put transmit data into FIFO.
When read this byte, i.e. read back the current data in FIFO.
After Read/Write this byte, the CPU read/write point will increase one automatically.
16.7.8
DF_CNT
Address
0x173D
Access Mode Value At Reset Nominal Value
R
00
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
DF_CNT [7:0]
DF_CNT
Current TX/RX byte count point.
Bit 1
Bit 0
- 138 -
Publication Release Date: May, 2007
Revision 1.3