Table 6-6. Netctl Register; Table 6-7. Netctl Fields; Control, Configuration, And Status Register Definitions - Sharp LH79524 User Manual

Ethernet MAC Controller

6.3.2 Control, Configuration, And Status Register Definitions

6.3.2.1 Network Control Register (NETCTL)
The NETCTL register allows configuration and testing of the SoC on the network.
BIT
FIELD
RESET
TYPE
BIT
FIELD
RESET
TYPE
ADDR
BITS
31:13
12
11
10
9
8
6-20

Table 6-6. NETCTL Register

31 30 29 28 27
0 0 0 0 0
RO RO RO RO RO
15 14 13 12 11
///
0 0 0 0 0
RO RO RO WO WO
NAME
/// Reserved Reading returns 0. Write the reset value.
Transmit Zero Quantum Pause Frame Causes a pause frame with
zero pause quantum to be transmitted at the next available transmitter
idle time.
TXZEROQ
1 = Transmit zero quantum pause frame
0 = No action
Transmit Pause Frame Transmit a pause frame with the pause quan-
tum from the Transmit Pause Quantum register at the next available
transmitter idle time.
TXPFRAME
1 = Transmit pause frame
0 = No action
Transmit Halt Halt transmission as soon as any ongoing frame trans-
mission ends.
TXHALT
1 = Halt transmission at end of current frame
0 = No action
Start Transmission
STARTTX
1 = Start transmission
0 = No action
Back Pressure In half-duplex mode, forces collisions on all
received frames.
BACKPRESS
1 = Force collisions
0 = No action
26 25 24 23
///
0 0 0 0
RO RO RO RO
10 9 8 7
0 0 0 0
WO WO RW RW
0xFFFC7000 + 0x00

Table 6-7. NETCTL Fields

FUNCTION
Version 1.0
LH79524/LH79525 User's Guide
22 21 20 19 18
0 0 0 0 0
RO RO RO RO RO
6 5 4 3 2
0 0 0 0 0
WO WO RW RW RW
17 16
0 0
RO RO
1 0
///
0 0
RW RW