Rainbow Electronics W90N740 - Manual (Page 195)

W90N740
Publication Release Date: November 26, 2004
- 191 - Revision A4
GPIOCFG13 [9:8]: Operating mode for GPIO13
11 10 01 00
GPIOCFG13
Name Type Name Type Name Type Name Type
GPIO13 RESERVED O STDBY O TIMER0 O GP13 IO
STDBY is a USB IO port, which controls the external USB transceiver power-down mode.
TIMER0 is the tone output of TIMER0.
GPIOCFG12 [7:6]: Operating mode for GPIO12
11 10 01 00
GPIOCFG12
Name Type Name Type Name Type Name Type
GPIO12 RESERVED IO PWREN IO nWDOG O GP12 IO
nWDOG is the timeout output of Watch-Dog Timer.
GPIOCFG11_10 [5:4]: Operating mode for GPIO11 and GPIO10
11 10 01 00
GPIOCFG11_10
Name Type Name Type Name Type Name Type
GPIO11 O RxD I GP11 IO
GPIO10
RESERVED
O
RESERVED
TxD O GP10 IO
RxD and TxD are used for the UART console.
GPIOCFG9_4 [3:2]: Operating mode for GPIO9, GPIO8, GPIO7, GPIO6, GPIO5, and GPIO4
11 10 01 00
GPIOCFG9_4
Name Type Name Type Name Type Name Type
GPIO9 nTOE O nDSR IU GP9 IOU
GPIO8 FSE0 O nDTR O GP8 IOU
GPIO7 VO O nCD IU GP7 IOU
GPIO6 VM IU nCTS IU GP6 IOU
GPIO5 VP IU nRTS O GP5 IOU
GPIO4
RESERVED
RCV IU nRI IU GP4 IOU
nTOE, FSE0, VO, VM, VP, and RCV are the USB IO signal pins, which connected to the external
USB transceiver to control the data in/out.
nDSR, nDTR, nCD, nCTS, nRTS and nRI are the UART modem signal pins.