st802rt1a STMicroelectronics, st802rt1a Datasheet - Page 27

• Manufacturer Part Number: st802rt1a
• Description: 10/100 Real-time Ethernet 3.3 V Transceiver
• Manufacturer: STMicroelectronics

Table 19.
ST802RT1A, ST802RT1B
15:14
12:11
8:6
4:3
Bit
13
10
9
5
2
1
0
FIFO-Extended
RMII_OOBS
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
FEF Enable
MII Enable
Bit name
Next page: Indicates whether this is the last next page.
Msg page: Differentiates a message page from an unformatted page.
Ack2: Indicates that link partner has the ability to comply with the message.
Toggle: Used by the arbitration function to ensure synchronization with the link partner
during next page exchange.
Message code field: An 11-bit wide field, encoding 2048 possible messages.
Unformatted code field: An 11-bit wide field, which may contain an arbitrary value.
RN10 [0d16, 0x10]: RMII-TEST control register
---
---
---
---
1 -> MII enabled
0 -> MII disabled, RMII enabled [see bit 10]
---
1 -> Far end fault enabled (only if auto-negotiation is
disabled)
0 -> Far end fault not enabled
---
1 -> Extended FIFO mechanism for RMII enabled
0 -> Normal operation
This bit extends elasticity buffer size in RMII interface
1 -> Out-of-band signaling enabled
0 -> Normal operation
To transfer no-TX/RX information (i.e. speed, link, duplex
mode) when TX_EN/CRS_DV are de-asserted (RMII 1.2)
---
Doc ID 17049 Rev 1
Description
Registers and descriptors description
Default
Strap
000b
000b
000b
10b
00b
0b
0
0
0
0
type
RW
RW
RW
RW
RW
RW
RW
RW
RW
RO
RO
RO
Type
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