
LXT9785 and LXT9785E Advanced 8-Port 10/100 Mbps PHY Transceivers
Datasheet
37
Document Number: 249241
Revision Number: 010
Revision Date: 30-May-2006
206
205
C15,
B17
RxData6_0
RxData6_1
O, TS
O, TS, ID
Receive Data - Port 6.
Receive data signals (2-bit parallel di-bits) are driven
synchronously to REFCLK.
198
197
E16,
F14
RxData7_0
RxData7_1
O, TS
O, TS, ID
Receive Data - Port 7.
Receive data signals (2-bit parallel di-bits) are driven
synchronously to REFCLK.
58
49
39
31
17
10
1
200
E4,
C4,
A5,
B8,
B12,
D12,
B16,
E15
CRS_DV0
CRS_DV1
CRS_DV2
CRS_DV3
CRS_DV4
CRS_DV5
CRS_DV6
CRS_DV7
O, TS, SL,
ID
Carrier Sense/Receive Data Valid - Ports 0-7.
On detection of valid carrier, these signals are
asserted asynchronously with respect to REFCLK.
CRS_DVn is de-asserted on loss of carrier,
synchronous to REFCLK.
59
50
40
32
20
11
2
201
D2,
D5,
D7,
C8,
A12,
A15,
A17,
D17
RxER0
RxER1
RxER2
RxER3
RxER4
RxER5
RxER6
RxER7
O, TS, SL,
ID
Receive Error - Ports 0-7.
These signals are synchronous to the respective
REFCLK. Active High indicates that received code
group is invalid, or that PLL is not locked.
The RxER signals have the following additional
function pins:
RxER0 (MDIX)
RxER1 (PAUSE)
RxER2 (PREASEL)
RxER4 (FIFOSEL0)
RxER5 (FIFOSEL1)
RxER6 (LINKHOLD)
Table 5.
RMII Signal Descriptions – PQFP (Sheet 3 of 3)
Pin-Ball
Designation
Symbol
Type1
Signal Description2,3
PQFP
PBGA
1. Type Column Coding: I = Input, O = Output, OD = Open Drain output, ST = Schmitt Triggered input, TS =
Three-State-able output, SL = Slew-rate Limited output, IP = weak Internal Pull-up, ID = weak Internal pull-
Down.
2. The IP/ID resistors are disabled during H/W Power-Down mode. If a Pin is an output or an I/O, the IP/ID
resistors are also disabled when the output is enabled.
3. RxData[0:7]_0, RxData[0:7]_1, CRS_DV[0:7] and RxER[0:7] outputs are three-stated in Isolation and H/W
Power-Down modes and during H/W reset.