pef80913 Infineon Technologies Corporation, pef80913 Datasheet - Page 71
pef80913
Manufacturer Part Number
pef80913
Description
2b1q Second Gen. Modular Isdn Nt
Manufacturer
Infineon Technologies Corporation
Datasheet
1.PEF80913.pdf
(240 pages)
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•
Figure 30
Table 13
SMINT I and INTC-Q [12]
•:
Table 13
State ’IDLE’
(S/G=0, E=D)
BAC-bit
D-channel inhibit
1)
Data Sheet
If the S-transceiver is reset by SRES.RES_S = ’1’ or disabled by S_CONF0.DIS_TR = ’1’, then the D-channel
arbiter is in state Ready (S/G = ’1’), too. The S/G evaluation of the HDLC has to be disabled in this case;
otherwise, the HDLC is not able to send data.
1) Setting DCI = 1 causes E = D
2) Setting A/B = 0 causes E = D
& [BAC = 1 or (BAC = 0 & CNT
BAC = d.c. DCI = 0
S/G = 1
lists the major differences of the D-channel arbiter´s state machine between Q-
(CNT
S ACCESS
State Machine of the D-Channel Arbiter (Simplified View)
Major Differences D-Channel Arbiter INTC-Q and Q-SMINT I
2 & D=0)
E = D
1)
n)]
INTC-Q
Automatically entered from
state ’READY’ or
’S ACCESS’ after CNT=n
Ignored
Not possible
(BAC=0 or DCI=1)
RST=0, A/B=0, Mode=0xx
BAC = 1 & DCI = 0
S/G = 1
& CNT
57
READY
D-Channel_Arbitration.vsd
n
E = D
1)2)
(BAC=1 & DCI=0)
Q-SMINT I
Not available, initial state is
’READY’ (S/G=1, E=D)
Local HDLC must tie BAC =
’0’ to enter state ’LOCAL
ACCESS’
S-MODE.DCH_INH
Alternative to BAC-bit to
enter state ’LOCAL
ACCESS’
CNT
OUT
IN
Functional Description
PEF 82912/82913
BAC
S/G
BAC = d.c. DCI = d.c.
S/G = 0
BAC = 0 or DCI = 1
S/G = 0
State
Transmit / Stop Flag
Wait for Start Flag
LOCAL ACCESS
LOCAL ACCESS
DCI
E
1)
2001-03-30
CNT = 6
E = D
E = D
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