CM108 Datasheet, PDF (22/29 Pages) C-Media Electronics – USB Audio I/O Controller

CM108
Integration Dual DAC, Earphone Driver, ADC,
Microphone Booster, PLL, Regulator, and USB Transceiver
HID_OR1 (HID output report byte 1)
Offset : 0x05
Bits Read/Write
Description
7-0
R / W When HID_OR0[7:6] == 2’b00:
HID_OR1[3:0] is the output to GPIO4 ~
GPIO1 in output mode
0: GPO drives L
1: GPO drives H
When HID_OR0[7:6] == 2’b01:
Reserved
When HID_OR0[7:6] == 2’b1x:
Mapped to EEPROM__DATA0
Default
0x00
HID_OR2 (HID output report byte 2)
Offset : 0x06
Bits Read/Write
Description
7-0
R / W When HID_OR0[7:6] == 2’b00:
HID_OR2[3:0] is the mode setting for
GPIO4 ~ GPIO1
0: Set GPIO to input mode
1: Set GPIO to output mode
When HID_OR0[7:6] == 2’b01:
Reserved
When HID_OR0[7:6] == 2’b1x:
Mapped to EEPROM_DATA1
Default
0x00
HID_OR3 (HID output report byte 3)
Offset : 0x07
Bits Read/Write
Description
7-0
R / W When HID_OR0[7] == 1’b0:
Category byte of SPDIF status channel
When HID_OR0[7] == 1’b1:
Mapped to EEPROM_CTRL
Note: HID_OR3 is used for SPDIF when SPDIF_CONFIG[5] == 1’b0
Default
0x00
Date: Nov/01/2004
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Version: 1.5