TC9204-DS-R05 datasheet(12/49 Pages) ETC1

12 / 49 page

TC9204M

Preliminary Data Sheet

Pin Listing (continued)

No.

Pin label

Type

Description

Txd40

GMII/MII transmit data - least significant bit

165

Priclass40

I/Opd

Priority class - least significant bit. Sets priority level per port basis.

PriClass[4] - '00' - port 4 low priority

PriClass[4] - '01' - port 4 has normal priority

PriClass[4] - '10' - port 4 has high priority

PriClass[4] - '11' - port 4 has very high priority

PriClass[4] is latched on reset

Txen4

GMII/MII transmit enable

166

RejRDA

I/Opd

If this pin is set to '1' then all frames with 802.1D Reserved Group

Address or 802.3x Full Duplex PAUSE operation DA will be filtered

out. This setting is provided for testing purposes only and it is

recommended to set high during normal operation.

RejRDA is latched on reset.

167

gtxclk4

GMII transmit clock

168

Vdd 3.3

Digital +3.3V power supply for I/O

169

Txer4

I/Opd Transmit Error

170

Txclk4

MII transmit clock

171

Crs4

MII carrier sense indication

172

Col4

MII collision indication

173

Rxer4

Receive Error

174

Vss 3.3

Digital ground for I/O

175

Rxclk4

MII receive clock

176

Rxdv4

GMII/MII data valid

177

Rxd40

GMII receive data - least significant nibble.

MII receive data

178

Rxd41

GMII receive data - least significant nibble.

MII receive data

179

Rxd42

GMII receive data - least significant nibble.

MII receive data

180

Rxd43

GMII receive data - least significant nibble.

MII receive data

181

Rxd44

GMII receive data - most significant nibble

182

Rxd45

GMII receive data - most significant nibble

183

Rxd46

GMII receive data - most significant nibble

184

Rxd47

GMII receive data - most significant nibble

185

Vdd 3.3

Digital +3.3V power supply for I/O

186

FullBp

I/Opd During the normal operation, the backpressure process is executed

until flow control condition disappears or until the time limit for

backpressure is reached. The backpressure time limit is based in the

EEPROM’s BPTimeValue register.

When this configuration is ‘0’ the backpressure process will also be

limited from exceeding 28-consecutive collisions. The default value

(28) can be changed in the EEPROM settings.

FullBp is latched upon reset

Confidential.

12/49

July 29, 2003

TC9204M-DS-R05

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