USB97C100 Standard Microsystems Corporation, USB97C100 Datasheet - Page 20

• Manufacturer Part Number: USB97C100
• Description: USB97C100 Multi-endpoint Usb Peripheral Controller(not Recommended For Designs)
• Manufacturer: Standard Microsystems Corporation

FIFO Status Registers
SMSC DS – USB97C100
[7:0]
BIT
[7:2]
BIT
[7:2]
BIT
1
0
1
0
[7:2]
[7:2]
BIT
BIT
(0x7F16 - RESET=0xXX)
1
0
1
0
(0x7F13 – RESET=0x01)
(0x7F11 – RESET=0x01)
GPFIFO2_EMPTY
GPFIFO1_EMPTY
(0x7F17 – RESET=0x01)
(0x7F15 – RESET=0x01)
GPFIFO2_FULL
GP_FIFO4
GP_FIFO4
GPFIFO1_FULL
GPFIFO2_STS
NAME
GPFIFO1_STS
Reserved
GPFIFO4_EMPTY
Reserved
GPFIFO3_EMPTY
GPFIFO4_STS
GPFIFO3_STS
GPFIFO4_FULL
NAME
NAME
GPFIFO3_FULL
Reserved
Reserved
NAME
NAME
Table 19 – 8051 GP FIFO 1 STATUS
Table 21 – 8051 GP FIFO 3 STATUS
Table 22 – 8051 GP FIFO 4 STATUS
Table 20– 8051 GP FIFO 2 STATUS
R/W
R/W
Table 18 – 8051 GP FIFO4
R/W
R/W
R
R
R
R
R
R
8 byte deep GP FIFO. This data FIFOs must not be read
unless the associated status bit indicates that FIFO is not
empty.
R/W
R/W
R
R
R
R
R
R
Reserved
GP FIFO 2 full status
0 = Not FULL
1 = FULL
GP FIFO 2 empty status
0 = Has one or more TX packet
1 = Empty
Reserved
GP FIFO 1 full status
0 = Not FULL
1 = FULL
GP FIFO 1 empty status
0 = Has one or more TX packet
1 = Empty
Page 20
Reserved
GP FIFO 4 full status
0 = Not FULL
1 = FULL
GP FIFO 4 empty status
0 = Has one or more TX packet
1 = Empty
Reserved
GP FIFO 3 full status
0 = Not FULL
1 = FULL
GP FIFO 3 empty status
0 = Has one or more TX packet
1 = Empty
8051 GP FIFO 2 status
8051 GP FIFO status
8051 GP FIFO4
DESCRIPTION
8051 GP FIFO 3 status
8051 GP FIFO status
DESCRIPTION
DESCRIPTION
DESCRIPTION
DESCRIPTION
Rev. 01/03/2001