S1R72105 Technical Manual
Rev.1.0
EPSON
45
7.5.2.5 EP0 FIFO remain Counter (EP0FIFOremain) R
Shows the number of bytes of remaining data in FIFO of Endpoint 0.
USBIndex : 00h
Address
Register Name
Bit Symbol
Description
1Dh EP0FIFOremain
7:
EP0FIFOremainCount[7]
6:
EP0FIFOremainCount[6]
5:
EP0FIFOremainCount[5]
4: EP0FIFOremainCount[4]
EP0 FIFO remain Counter
3:
EP0FIFOremainCount[3]
2:
EP0FIFOremainCount[2]
1:
EP0FIFOremainCount[1]
0:
EP0FIFOremainCount[0]
7.5.2.6 EP0 FIFO for CPU (EP0FIFOforCPU) R/W
This register allows access to FIFO of Endpoint 0 from the CPU.
When the EnFiFOwr bit of the EP0FIFOCtrl register is set, writing is enabled, when the EnFIFOrd bit is set,
reading is enabled.
It should be noted that reading or writing decreases the number of data in FIFO.
USBIndex : 00h
Address
Register Name
Bit Symbol
Description
1Eh EP0FIFOforCPU
7:
EP0FIFOdata[7]
6:
EP0FIFOdata[6]
5:
EP0FIFOdata[5]
4: EP0FIFOdata[4]
EP0 FIFO for CPU
3:
EP0FIFOdata[3]
2:
EP0FIFOdata[2]
1:
EP0FIFOdata[1]
0:
EP0FIFOdata[0]
