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Preliminary Data Sheet
W6694A USB-ISDN S/T-Controller
-28-
Publication Release Date: May, 2001
Revision 1.03
8.2.5 Layer 1 Command/Indication Register
CIX
Read/Write
Address 04h
Value after reset: 0Fh
7
6
5
4
3
2
1
0
CIX3
CIX2
CIX1
CIX0
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
8.2.6 U-layer1 Ready Code
L1_RC
Read/Write
Address 05h
Value after reset: 0Ch
7
6
5
4
3
2
1
0
RC3
RC2
RC1
RC0
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.
8.3 GCI Mode Registers
8.3.1 GCI Mode Command Register
GCR
Read/Write
Address 06h
Value after reset: 00h
7
6
5
4
3
2
1
0
MAC
0
TLP
GRLP
SPU
PD
GE
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.