CM120 C-Media Electronics, Inc., CM120 Datasheet - Page 14

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

3. PIN / SIGNAL DESCRIPTIONS
Date: 09/09/2003
3.1 USB & Misc I/O SIGNALS
3.2 CF & Microdrive I/O SIGNALS
These signals connect CM120 to USB host controller counterpart, external crystal, multi-power
selection, general purpose control and external MCU component.
These signals connect CM120 to analog sources and sinks, including microphones and speakers.
XCF_DATA[15:0]
XCF_PWR_EN
XCF_CS[1:0]N
Signal Name
Signal Name
XCF_SA[2:0]
XSELFPWR
XCF_IOWN
XCF_DETN
XCF_RSTN
XGPIO[7:0]
XCF_IORN
XSP_CLK
XCF_LED
XSP_DO
XSP_CS
XENHID
XSP_DI
XRSTN
XTEST
XTAL1
XTAL2
XPDN
XDN
XDP
Table 2：CF/Microdrive Signal List
Type
Type
I/O
I/O
I/O
I/O
O
O
O
O
O
O
O
O
O
O
I
I
I
I
I
I
I
I
I
Table 1：USB & Misc Signal List
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CF/Microdrive addressbus[2:0] output
CF/Microdrive write command output
CF/Microdrive read command output
CF/Microdrive chip select bus output
USB 7-in-1 Combo Card Reader Controller
CF/Microdrive power enable output
General purpose input and output
CF/Microdrive card detect input
CF/Microdrive reset output
SPI mode chipselect input
CF/Microdrive LED output
USB power down enable
CF/Microdrive data bus
USB self power enable
USB data minus signal
12 MHz crystal output
SPI mode data output
SPI mode clock input
USB data plus signal
12 MHz crystal input
SPI mode data input
HID function enable
System reset input
Testmode enable
Description
Description
Version: 1.3
CM120