LAN9353 Datasheet, PDF (238/523 Pages) Microchip Technology – Interfaces at up to 200Mbps via Turbo MII

LAN9353
10.6.4 SWITCH FABRIC CSR INTERFACE DATA REGISTER (SWITCH_CSR_DATA)
Offset:
1ACh
Size:
32 bits
This read/write register is used in conjunction with the Switch Fabric CSR Interface Command Register (SWITCH_CS-
R_CMD) to perform read and write operations with the Switch Fabric CSRs. Refer to Section 10.7, "Switch Fabric Con-
trol and Status Registers," on page 246 for details on the registers indirectly accessible via this register.
Bits
Description
31:0 Switch CSR Data (CSR_DATA)
This field contains the value read from or written to the Switch Fabric CSR.
The Switch Fabric CSR is selected via the CSR Address (CSR_ADDR[15:0])
bits of the Switch Fabric CSR Interface Command Register (SWITCH_CS-
R_CMD).
Upon a read, the value returned depends on the Read/Write (R_nW) bit in
the Switch Fabric CSR Interface Command Register (SWITCH_CSR_CMD).
If Read/Write (R_nW) is set, the data is from the switch fabric. If Read/Write
(R_nW) is cleared, the data is the value that was last written into this register.
Type
R/W
Default
00000000h
DS00001925A-page 238
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