USB97C100 Standard Microsystems Corporation, USB97C100 Datasheet - Page 21

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

Note: The Timer inputs T[1:0] can be configured as outputs and left unconnected so that software can write to the
SMSC DS – USB97C100
bits to trigger the timer. Otherwise, the Timer inputs can be used to count external events or internal SOF
receptions.
BIT
BIT
BIT
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
(0x7F1A- RESET=0xXX)
(0x7F19- RESET=0x00)
(0x7F18- RESET=0x00)
GPIO0/RXD
GPIO1/TXD
GPIO0/RXD
GPIO1/TXD
GPIO0/RXD
GPIO3/T1
GPIO2/T0
GPIO1/TXD
GPIO3/T1
GPIO2/T0
GPIOA_OUT
GPIO3/T1
GPIO2/T0
GPIO7
GPIO6
GPIO5
GPIO4
NAME
NAME
GPIO7
GPIO6
GPIO5
GPIO4
GPIOA_DIR
GPIOA_IN
GPIO7
GPIO6
GPIO5
GPIO4
NAME
Table 23 - GPIO Direction Register
Table 24 - GPIO Output Register
Table 25 - GPIO Input Register
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R
R
R
R
R
R
R
R
Page 21
GPIO7 Output Buffer Data
GPIO6 Output Buffer Data
GPIO5 Output Buffer Data
GPIO4 Output Buffer Data
GPIO3 Output Buffer Data
GPIO2 Output Buffer Data
GPIO1 Output Buffer Data
GPIO0 Output Buffer Data
GPIO7 Input Buffer Data
GPIO6 Input Buffer Data
GPIO5 Input Buffer Data
GPIO4 Input Buffer Data
GPIO3 Input Buffer Data
GPIO2 Input Buffer Data
GPIO1 Input Buffer Data
GPIO0 Input Buffer Data
GPIO7 Direction
0 = In
1 = Out
GPIO6 Direction
0 = In
1 = Out
GPIO5 Direction
0 = In
1 = Out
GPIO4 Direction
0 = In
1 = Out
GPIO3 Direction
0 = In
1 = Out
GPIO2 Direction
0 = In
1 = Out
GPIO1 Direction
0 = In
1 = Out
GPIO0 Direction
0 = In
1 = Out
MCU UTILITY REGISTERS
GPIO INPUT REGISTER A
GPIO DATA OUTPUT
DESCRIPTION
DESCRIPTION
DESCRIPTION
REGISTER A
Rev. 01/03/2001