MTC20136

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EBI Interface Timing

All timing parameters are specified at a load of 100 pF, all the electrical levels are CMOS compatible.

Table 2. All signals

Table 3. EBI signal timing with respect to E_CLK

CTRLE

The Ctrl-E interface is an ADSL-oriented mailbox system to exchange control and status messages be-

tween MTC20136 and an external controller. It consists of a mailbox and a physical interface. The mailbox

has two 8-bit command registers to pass commands from the MTC20136 internal controller bus (ASB) to

Ctrl-E (RxCommand) and from Ctrl-E to ASB (TxCommand), and two status registers (RxComAv and Tx-

ComAv) to indicate the status of the command register. Data associated with a command can be ex-

changed using a common CtrleDataBuffer. A hardware semaphore mechanism is provided to allow

control of data consistency of the CtrleDataBuffer.

Figure 7. Ctrl-E interface controller principle

Symbol

Parameters

Min

Typ

Max

Unit

Rise and Fall time (10% - 90%)

3

ns

Ci

Input load

10

pF

Co

Output load

100

pF

Symbol

Parameters

Min

Max

Unit

Data input hold time from E_CLK

3

ns

Data input setup time to E_CLK

10

ns

Data/Address output valid/tri-state delay from E_CLK

10

ns

ALE delay from E_CLK

6

ns

notOE delay from E_CLK

6

ns

notWEi delay from E_CLK (falling edge)

6

ns

W/notR delay from E_CLK

3

10

ns

notCSi delay from E_CLK

3

10

ns

Ctrl-E

physical interface

Ctrl-E

Mailbox

CtrleDataBuffer

(512*8 bit

dual port RAM)

Semaphore

RxComAv

TxComAv

RxCommand

TxCommand

Mailbox Interrupt

controller

Ctrl-E

Serial

Interface

Generic

Parallel

Interface

TX

RX

D_SELctrle

I/O

MRd

MWr

MA[8:0]

MD[7:0]

MQ[7:0]

Ctrlelnt1

Ctrlelnt0

ASB

To IT-

Controller