CM220
Updateable USB2.0 Card Reader Controlle
Date: 8/2/2005 Version: 1.4
- 7 -
4. PIN DESCRIPTIONS & ASSIGNMENT
48
Pin# 100
in # 128
pin # Symbol I/O Type Description
NC 2 1 XDCD DI, PU XD Card detect pin, low active
NC 3 2 SMCD DI, PU SM Card detect pin, low active
NC 4 3 SMCEB DO SM card enable, low active
10 5 4 SMWP DI, PU SM card write protect, low active
11 6 5 TMODE DI, PD Chip test mode enable, High active
NC NC 6 GPIO1 DI General Purpose Input Output
NC NC 7 CFLED DO CF Card access indicator Led, High active
NC NC 8 VCC3V(O) Digital power. Connected to 3.3 V
NC NC 9 GND(O) Digital Ground pin
NC 7 10 CFPWR DO CF Card power control, low active
NC 8 11 CFD[3] DIO, PD CF card data bus
NC 9 12 CFD[11] DIO, PD CF card data bus
NC 10 13 CFD[4] DIO, PD CF card data bus
NC 11 14 CFD[12] DIO, PD CF card data bus
NC 12 15 CFD[5] DIO, PD CF card data bus
NC 13 16 CFD[13] DIO, PD CF card data bus
NC 14 17 CFD[6] DIO, PD CF card data bus
NC 15 18 CFD[14] DIO, PD CF card data bus
NC 16 19 CFD[7] DIO, PD CF card data bus
12 17 20 VCC3V(O) Digital power. Connected to 3.3 V
NC 18 21 GND(O) Digital Ground pin
NC 19 22 CFD[15] DIO, PD CF card data bus
NC 20 23 CFCS0 DO, CF card select 0
NC 21 24 CFCS1 DO, CF card select 1
NC 22 25 CFIOR DO, CF card read enable, low active
NC 23 26 CFIOW DO, CF card write enable, low active
NC 24 27 CFRST DO, CF card reset, low active
NC 25 28 CFSA[2] DO, CF card address bus
NC 26 29 CFSA[1] DO, CF card address bus
NC 27 30 CFSA[0] DO, CF card address bus
NC 28 31 CFD[0] DIO, PD CF card data bus