DM9620 DAVICOM [Davicom Semiconductor, Inc.], DM9620 Datasheet - Page 40

• Manufacturer Part Number: DM9620
• Description: USB2.0 to 10/100M Fast Ethernet Controller
• Manufacturer: DAVICOM [Davicom Semiconductor, Inc.]

6.13 DSP Control (DSP_CTRL) – 1BH
Preliminary
Version: DM9620 -15-DS-P02
February 20, 2012
6.14 Power Saving Control Register (PSCR) – 1DH
15-12
15~0
8-0
Bit
Bit
11
10
0
9
DSP_CTRL
PREAMBLEX
AMPLITUDE
Bit Name
RESERVED
RESERVED
PD_value
Bit Name
TX_PWR
Default
0, RW
Default
0,RW
0,RW
0,RW
0.RW
0,RO
0,RO
DSP CONTROL
For internal testing only
Force to 0, in application.
Power down control value
Decision the value of each field Register 19.
1: power down
0: normal
RESERVED
Preamble Saving Control
when both bit 10and 11 of register 14H are set, the 10BASE-T
transmit preamble count is reduced.
1: 12-bit preamble is reduced.
0: 22-bit preamble is reduced.
Transmit Amplitude Control Disabled
1: when cable is unconnected with link partner, the TX amplitude is
reduced for power saving.
0: disable Transmit amplitude reduce function
Transmit Power Saving Control Disabled
1: when cable is unconnected with link partner, the driving current
of transmit is reduced for power saving.
0: disable transmit driving power saving function
RESERVED
Description
USB2.0 to Fast Ethernet Controller
Description
DM9620
40