dmagrp_receive_poll_demand

         <b>Register 2 (Receive Poll Demand Register) </b>

The Receive Poll Demand register enables the receive DMA to check for new descriptors. This command is used to wake up the Rx DMA from the SUSPEND state. The RxDMA can go into the SUSPEND state only because of the unavailability of descriptors it owns. When this register is read, it always returns zero.

Module Instance	Base Address	Register Address
`i_emac_emac0`	`0xFF800000`	`0xFF801008`
`i_emac_emac1`	`0xFF802000`	`0xFF803008`
`i_emac_emac2`	`0xFF804000`	`0xFF805008`

Size: 32

Offset: 0x1008

Access: RW

Important: The value of a reserved bit must be maintained in software. When you modify registers containing reserved bit fields, you must use a read-modify-write operation to preserve state and prevent indeterminate system behavior.

Bit Fields
31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16
`rpd` `RW 0x0`
15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
`rpd` `RW 0x0`

dmagrp_receive_poll_demand Fields

Bit	Name	Description	Access	Reset
31:0	`rpd`	Receive Poll Demand When these bits are written with any value, the DMA reads the current descriptor pointed to by Register 19 (Current Host Receive Descriptor Register). If that descriptor is not available (owned by the Host), the reception returns to the Suspended state and the Bit 7 (RU) of Register 5 (Status Register) is not asserted. If the descriptor is available, the Rx DMA returns to the active state.	`RW`	`0x0`

Bit

Name

Description

Access

Reset

31:0

rpd

Receive Poll Demand

When these bits are written with any value, the DMA reads the current descriptor pointed to by Register 19 (Current Host Receive Descriptor Register). If that descriptor is not available (owned by the Host), the reception returns to the Suspended state and the Bit 7 (RU) of Register 5 (Status Register) is not asserted. If the descriptor is available, the Rx DMA returns to the active state.

RW

0x0