DP83849CVS/NOPB National Semiconductor, DP83849CVS/NOPB Datasheet - Page 75

• Manufacturer Part Number: DP83849CVS/NOPB
• Description: IC TXRX ETHERNET PHY DUAL 80TQFP
• Manufacturer: National Semiconductor
• Type: Transceiverr

Specifications of DP83849CVS/NOPB

• Number Of Drivers/receivers: 2/2
• Protocol: Ethernet
• Voltage - Supply: 3 V ~ 3.6 V
• Mounting Type: Surface Mount
• Package / Case: 80-TQFP, 80-VQFP
• Data Rate: 100Mbps
• Supply Voltage Range: 3V To 3.6V
• Logic Case Style: TQFP
• No. Of Pins: 80
• Operating Temperature Range: 0°C To +70°C
• Msl: MSL 3 - 168 Hours
• Filter Terminals: SMD
• Rohs Compliant: Yes
• Data Rate Max: 10Mbps
• For Use With: DP83849CVS-EVK - BOARD EVALUATION DP83849CVS
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: *DP83849CVS; *DP83849CVS/NOPB; DP83849CVS

7.2.8 CD Test and BIST Extensions Register (CDCTRL1)
This register controls test modes for the 10BASE-T Common Driver. In addition it contains extended control
and status for the packet BIST function.
7.2.9 Phy Control Register 2 (PHYCR2)
This register provides additional general control.
15:10
15:8
Bit
7:6
1:0
Bit
8:0
5
4
3
2
9
BIST_ERROR_COUNT
10MEG_PATT_GAP
BIST_CONT_MODE
SOFT_RESET
CDPATTSEL[1:0]
RESERVED
RESERVED
CDPATTEN_10
Bit Name
RESERVED
RESERVED
Table 40. CD Test and BIST Extensions Register (CDCTRL1), address 1Bh
Bit Name
Table 41. Phy Control Register 2 (PHYCR2), address 1Ch
0, RW/SC
Default
0, RO
0, RO
Default
00, RW
0, RW
0, RW
0, RW
0, RW
0, RW
0, RO
BIST ERROR Counter:
Counts number of errored data nibbles during Packet BIST. This
value will reset when Packet BIST is restarted. The counter sticks
when it reaches its max count.
RESERVED:
Must be zero.
Packet BIST Continuous Mode:
Allows continuous pseudo random data transmission without any
break in transmission. This can be used for transmit VOD testing.
This is used in conjunction with the BIST controls in the PHYCR
Register (19h). For 10Mb operation, jabber function must be dis-
abled, bit 0 of the 10BTSCR (1Ah), JABBER_DIS = 1.
CD Pattern Enable for 10Mb:
1 = Enabled.
0 = Disabled.
RESERVED:
Must be zero.
Defines gap between data or NLP test sequences:
1 = 15 s.
0 = 10 s.
CD Pattern Select[1:0]:
If CDPATTEN_10 = 1:
00 = Data, EOP0 sequence
01 = Data, EOP1 sequence
10 = NLPs
11 = Constant Manchester 1s (10MHz sine wave) for harmonic dis-
tortion testing.
RESERVED: Writes ignored, read as 0.
Soft Reset:
Resets the entire device minus the registers - all configuration is
preserved.
1= Reset, self-clearing.
RESERVED: Writes ignored, read as 0.
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Description
Description
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