TC9208M
Preliminary Data Sheet
Pin Listing (continued)
No.
Pin label
Type
Description
U18 RxData4_6
Is
GMII receive data - most significant nibble
U19 RxData4_7
Is
GMII receive data - most significant nibble
D14 Vdd 3.3
P
Digital +3.3V power supply for I/O
TxData5_7
GMII transmit data - bit 7
E19
FullBp
I/Opd
In normal operation the backpressure process is executed until flow
control condition disappears or until the time limit for backpressure is
reached. This limit is based on EEPROM’s BPTimeValue register.
When this configuration is ‘0’ the backpressure process will be also
limited from exceeding 28 consecutive collisions. The default value
(28) can be changed by EEPROM settings.
FullBp is latched on reset
TxData5_6
GMII transmit data - bit 6
E20
CarrBp
I/Opu
Enable / disable carrier based backpressure for half -duplex mode.
'1' – Carrier based backpressure
‘0' – Collision based backpressure.
CarrBp is latched on reset
TxData5_5
GMII transmit data - bit 5
F18
DisBkPr
I/Opd
Setting this pin to ‘1’ will disable backpressure procedure for all half
duplex ports. DisBkPr is latched on reset.
F19
TxData5_4
I/Opd GMII transmit data - bit 4
TxData5_3
GMII/MII transmit data - bit 3
F20
FrcFdFc
I/Opd
Setting this bit to ‘1’ will force flow control execution for 10/100Mbps,
no matter the auto negotiation result. FrcFdFc is latched on reset.
D10 Vss 3.3
G
Digital ground for I/O
TxData5_2
GMII/MII transmit data - bit 2
G20
DisFdFc
I/Opd
Setting this bit to '1' will disable flow-control for full-duplex mode
(transmission of pause frames).
DisFdFc is latched on reset.
TxData5_1
GMII/MII transmit data - bit 1
G19
PriClass5_1
I/Opd
Priority class - most significant bit.
PriClass[5] is latched on reset
TxData5_0
GMII/MII transmit data - least significant bit
G18
PriClass5_0
I/Opu
Priority class - least significant bit. Sets priority level per port basis.
PriClass[5] - '00' - port 5 low priority
PriClass[5] - '01' - port 5 has normal priority
PriClass[5] - '10' - port 5 has high priority
PriClass[5] - '11' - port 5 has very high priority
PriClass[5] is latched on reset
TxEn5
GMII/MII transmit enable
E18
DisBPBk
I/Opd
Enable / disable backoff during backpressure.
'1' – No backoff executed. Another collision will be forced again after
one minimum IFG time following previous collision if carrier
sense is observed.
'0' – The MAC randomly chooses between 0 and 1 slot times of
backoff. DisBkBp is latched on reset.
Confidential.
15/53
August 1, 2003
Copyright © 2003, IC Plus Corp.
TC9208M-DS-R06
Chinese ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
