CM220 Datasheet, PDF (9/19 Pages) C-Media Electronics – Updateable USB2.0 Card Reader Controller

CM220
Updateable USB2.0 Card Reader Controller
NC NC 73 SCEB
NC NC 74 SCLK
NC NC 75 SDO
NC NC
32 57
76 SDI
77 RSTB
DO, PU
DO, PU
DIO, PU
DO, PU
DO, PU
DIO, PU
DO, PU
DO, PU
DIO, PU
DI, PU
DI, PU
DIO, PU
DI
SPI – CEB
EEPROM – CS
SD – SDD[7]
SPI - Clock Output
EEPROM – SK
SD – SDD[6]
SPI - Data Output
EEPROM – DI
SD - SDD[4]
SPI - Data Input
EEPROM – DO
SD - SDD[5]
System Reset, Low active
33 58 78 SDWP
DI, PU SD card write protect, low active
NC 59 79 VCC3V(O)
Digital power. Connected to 3.3 V
34 60 80 SDD[1]
DIO, PU SD card data bus
35 61 81 SDD[0]
DIO, PU SD card data bus
36 62 82 SDCLK
DO
SD card clock
37 63 83 SDCMD
DIO, PU SD card command bus
38 64 84 SDD[3]
DIO, PU SD card data bus
39 65 85 SDD[2]
DIO, PU SD card data bus
DO
NC 66 86 USBLED
NC NC 87 SDLED
DO
USB configuration indicator Led, High
active
SD Card access indicator Led, High active
40 67 88 SDPWR
DO
SD Card power control, low active
41 68 89 SDCD
DI, PU SD Card detect pin, low active
NC NC 90 GPIO3
DIO
General Purpose Input Output
42 69 91 GND(CORE)
Digital Ground pin
42 69 91 GND(O)
Digital Ground pin
42 69 91 GND(I)
Digital Ground pin
43 70 92 VCC3V(O)
Digital power. Connected to 3.3 V
43 70 92 VCC3V(I)
Digital power. Connected to 3.3 V
44 71 93 MSCLK
DO
MS Clock Output
45 72 94 MSD[3]
DIO, PD MS card data bus
46 73 95 MSD[2]
DIO, PD MS card data bus
47 74 96 MSD[0]
DIO, PD MS card data bus
48 75 97 MSD[1]
DIO, PD MS card data bus
1 76 98 MSBS
DO
MS Bus State Output
2 77 99 MSCD
DI, PU MS Card detect pin, low active
3 78 100 MSPWR
DO
MS Card power control, low active
NC NC 101 GND(O)
Digital Ground pin
Date: 8/2/2005
-9-
Version: 1.4