CM120 C-Media Electronics, Inc., CM120 Datasheet - Page 7

• Manufacturer Part Number: CM120
• Description: Usb 7-in-1 Combo Card Reader Controller
• Manufacturer: C-Media Electronics, Inc.

CM120 7-in-1 USB combo card reader is designed according to the Universal Serial BUS(USB) Mass
Storage Class specifications, capable of managing the file access and file format, dead lock avoidance,
card detection, write protection, ECC corecation and detection, custiomized icon name and LED display
in PC environment. It includes:
Date: 09/09/2003
File Management: file read/write, file delete, file copy, file execution and format.
Dead Locking Avoidance：prevent users from inappropriate card plug-out card or other some
unreasonable access via the utilization of time out mechanism.
Card Detection：CF/Microvdrive, SD/MMC, SM/xD, MS card detection.
ECC Corecation & Detectoion：SmartMedia (SM) /
support one bit ECC correcation and two bits ECC detection.
Custiomized Icon Name：Provide customized name and iocn for each disk in file manager.
LED Display：Provide 5 kinds LED dipslay with 1) USB access, 2) CF/Microdrive access, 3) SD/MMC
access, 4) SM/xD access and 5) MS access. Sink current is 8mA.
SPI Mode：Support SPI mode to process external MCU to access HID function.
16 bits GPIO：Support 16 bits general purpose input nand output for user-friendliness.
*Note: DI – digital input pin , DO – digital output pin, DIO – digital bi-directional pin, P – power pin, PD – pull down with
100K Ohm resistor, AI – analog input, AO – analog output
CF/Microdrive
SOURCE
SD/MMC
POWER
SM/xD
GPIO
GND
Misc
LED
SPI
MS
XCF_SA[0:2], XCF_IORN, XCF_IOWN, XCF_CS[0:1]N, XCF_DETN,
XCF_DATA[0:15], XCF_RSTN, XCF_PWR_EN
XSD_WPN, XSD_DETN, XSD_CLK, XSD_CMD, XSD_DATA[0:3],
XSD_PWR_EN
XSMXD_DETN, XSMXD_RB, XSM_WPSW, XSMXD_ALE, XSMXD_CLE,
XSMXD_DATA[7:0], XSMXD_RE, XSMXD_WE, XSMXD_CE1,
XSMXD_WP, XSMXD_PWR_EN
XMS_DATA, XMS_CLK, XMS_BS, XMS_DETN, XMS_PWR_EN
XSP_CLK, XSP_DI, XSP_DO, XSP_CS
XUSB_LED, XMS_LED, XSM_LED, XSD_LED, XCF_LED
XUSB_LED, XMS_LED, XSMXD_LED, XSD_LED, XCF_LED,
XSD_PWR_EN, XSMXD_PWR_EN, XMS_PWR_EN, XGPIO[7:0]
XTEST, XSELFPWR, XPDN, XENHID, XRSTN, XDP, XDM
VDD1,AVCC,VDD2,VDD3,VDD4,VDD5,VDD6
VSS1, AVSS, VSS2, AVSS3, AVSS7, AVSS4, AVSS5, AVSS6, XUSBGND 7,8,28,29,53,60,80,81,98
PIN NAME
- 6 -
USB 7-in-1 Combo Card Reader Controller
eXtreme Digital (xD)
50~52,55,56,57~58,59,61
~68,70~77,78,79
82,83,84,85,86~89
12,13,14,1516,18~25,26,
27,30,31,91
3,4,5,6,49
32,33,34,35
97,96,95,94,93
97~91,49~41
1,11,17,40,54,69,90
2,36,37,38,39,99,100
and Memory Stick (MS)
PIN Position
Version: 1.3
CM120