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Preliminary Data Sheet
W6694A USB-ISDN S/T-Controller
Read/Write Address 04h
-28-
Publication Release Date: May, 2001
Revision 1.03
8.2.5 Layer 1 Command/Indication Register
Value after reset: 0Fh
7
6
5
0
0
0
CIX3-0 Layer 1 Command Code
Value of the command code transmitted to layer 1. A read to this register returns the previous written value.
Note
: If S/T layer 1 function is disabled and GCI bus is enabled (GE=1 in GCR register), CIX register is used to issue layer 1
command code to U transceiver. In this case, the supported command code is:
Command
Symbol
Code
Descriptions
Activate request command
AR
1000
Activate request command
CIX
4
0
3
2
1
0
CIX3
CIX2
CIX1
CIX0
8.2.6 U-layer1 Ready Code
Value after reset: 0Ch
7
6
0
0
RC3-0 Ready Code
When GCI bus is being enabled, these four programmable bits are allowed to program different Layer 1_Ready Code
(AI: Activation Indication) by user. For example: Siemens PEB2091: AI=1100, Motorola MC145572: AI=1100.
L1_RC
Read/Write Address 05h
5
0
4
0
3
2
1
0
RC3
RC2
RC1
RC0
8.3 GCI Mode Registers
8.3.1 GCI Mode Command Register
Value after reset: 00h
7
6
MAC
0
MAC
Monitor Transmit Channel Active (Read Only)
Data transmission is in progress in GCI mode Monitor channel.
0: The previous transmission has been terminated. Before starting a transmission, software should verify that the
transmitter is inactive.
1: The previous transmission is in progress.
TLP
Test Loop back
When set this bit both the GCIDU and GCIDD lines are internally connected together. The GCI mode loop back test
function: GCIDU is internally connected with GCIDD, external input on GCIDD is ignored.
GCR
Read/Write Address 06h
5
0
4
3
2
1
0
TLP
GRLP
SPU
PD
GE