LAN9353 Datasheet, PDF (243/523 Pages) Microchip Technology – Interfaces at up to 200Mbps via Turbo MII

LAN9353
10.6.8
SWITCH FABRIC CSR INTERFACE DIRECT DATA REGISTERS
(SWITCH_CSR_DIRECT_DATA)
Offset:
200h-2F8h
Size:
32 bits
This write-only register set is used to perform directly addressed write operations to the Switch Fabric CSRs. Using this
set of registers, writes can be directly addressed to select Switch Fabric registers, as specified in Table 10-8.
Writes within the Switch Fabric CSR Interface Direct Data Registers (SWITCH_CSR_DIRECT_DATA) address range
automatically set the appropriate CSR Address (CSR_ADDR[15:0]), set the four CSR Byte Enable (CSR_BE[3:0]) bits,
clear the Read/Write (R_nW) bit and set the CSR Busy (CSR_BUSY) bit in the Switch Fabric CSR Interface Command
Register (SWITCH_CSR_CMD). The completion of the write cycle is indicated when the CSR Busy (CSR_BUSY) bit
self-clears. The address that is set in the Switch Fabric CSR Interface Command Register (SWITCH_CSR_CMD) is
mapped via TABLE 10-8:. For more information on this method of writing to the Switch Fabric CSRs, refer to Section
10.5.4, "Switch Fabric CSR Writes," on page 228.
Bits
Description
31:0 Switch CSR Data (CSR_DATA)
This field contains the value to be written to the corresponding Switch Fabric
register.
Type
WO
Default
00000000h
Note:
This set of registers is for write operations only. Reads can be performed via the Switch Fabric CSR Inter-
face Command Register (SWITCH_CSR_CMD) and the Switch Fabric CSR Interface Data Register
(SWITCH_CSR_DATA) only.
TABLE 10-8: SWITCH FABRIC CSR TO SWITCH_CSR_DIRECT_DATA ADDRESS RANGE MAP
REGISTER NAME
SW_RESET
SW_IMR
MAC_RX_CFG_0
MAC_TX_CFG_0
MAC_TX_FC_SETTINGS_0
EEE_TW_TX_SYS_0
EEE_TX_LPI_REQ_DELAY_CNT_0
MAC_IMR_0
MAC_RX_CFG_1
MAC_TX_CFG_1
MAC_TX_FC_SETTINGS_1
EEE_TW_TX_SYS_1
SWITCH FABRIC CSR
REGISTER #
General Switch CSRs
0001h
0004h
Switch Port 0 CSRs
0401h
0440h
0441h
0442h
0443h
0480h
Switch Port 1 CSRs
0801h
0840h
0841h
0842h
SWITCH_CSR_DIRECT_DATA
ADDRESS
200h
204h
208h
20Ch
210h
2E0h
2E4h
214h
218h
21Ch
220h
2E8h
 2015 Microchip Technology Inc.
DS00001925A-page 243