mtc20136pq STMicroelectronics, mtc20136pq Datasheet - Page 16

• Manufacturer Part Number: mtc20136pq
• Description: Adsl Transceiver Controller
• Manufacturer: STMicroelectronics

MTC20136
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
16/25
Symbol
Symbol
T
T
T
T
T
T
T
T
wed
t
Co
wrd
oed
wrd
csd
Ci
r
dh
dd
ds
,t
f
Rise and Fall time (10% - 90%)
Input load
Output load
Data input hold time from E_CLK
Data input setup time to E_CLK
Data/Address output valid/tri-state delay from E_CLK
ALE delay from E_CLK
notOE delay from E_CLK
notWEi delay from E_CLK (falling edge)
W/notR delay from E_CLK
notCSi delay from E_CLK
Controller
To IT-
Parameters
ASB
D_SELctrle
Ctrlelnt0
Parameters
Mailbox Interrupt
CtrleDataBuffer
dual port RAM)
RxCommand
TxCommand
Semaphore
(512*8 bit
controller
RxComAv
TxComAv
Mailbox
Ctrl-E
MRd
MWr
MA[8:0]
MD[7:0]
MQ[7:0]
Ctrlelnt1
RX
TX
Min
physical interface
Interface
Interface
Generic
Parallel
Ctrl-E
Serial
Ctrl-E
Typ
Min
10
3
3
3
I/O
Max
Max
100
10
10
10
10
3
6
6
6
Unit
Unit
pF
pF
ns
ns
ns
ns
ns
ns
ns
ns
ns