MEDIATEK Ralink MT7620 - 1000_2000)

PGMT7620_V.1.0_040503
Page 119 of 523
MT7620 PROGRAMMING GUIDE
Integrated 802.11n MAC/BBP and 2.4 GHz RF/FEM Router-on-a-Chip
2.11.4 Register Descriptions (base: 0x1000_2000)
140. GLB_CFG: (offset: 0x0000)
Bits
Type
Name
Description
Initial Value
31
RW
PCM_EN
PCM Enable
When disabled, all FSM of PCM are cleared to
their default value.
0: Disable
1: Enable
0x0
30
RW
DMA_EN
DMA Enable
0: Disable the DMA interface, transfer data
using software.
1: Enable the DMA interface, transfer data
using DMA.
0x0
29
RW
LBK_EN
Loopback Enable
0: Normal mode
1: Loopback
(Asyn-TXFIFO DTX DRX Asyn-RXFIFO)
0x0
28
RW
EXT_LBK_EN
External Loopback Enable
0: Normal mode
1: External loopback enable
(Ext-Codec DRX DTX Ext-Codec)
0x0
27:23
-
-
Reserved
0x0
22:20
RW
RFF_THRES
RXFIFO Threshold
When the threshold is reached, the host/DMA
is notified to fill FIFO. The threshold should be
>2 and <6.
When data in FIFO is under the threshold, the
following interrupts and GDMA are triggered.
 CH0T_THRES
 CH0R_THRES
 CH1T_THRES
 CH1R_THRES
(unit: word)
0x4
19
-
-
Reserved
0x0
18:16
RW
TFF_THRES
TXFIFO Threshold
When the threshold is reached, the host/DMA
is notified to fill FIFO.
It should be >2 and <6.
When data in FIFO is over the threshold, an
interrupt and DMA are triggered.
(unit: word)
0x4
15:4
-
-
Reserved
-
3:0
RW
CH_EN
Channels 3 to 0 Tx and Rx Enable
0: Disable
1: Enable
0x0