From owner-freebsd-multimedia Wed Feb 26 12:10:47 1997 Return-Path: Received: (from root@localhost) by freefall.freebsd.org (8.8.5/8.8.5) id MAA00343 for multimedia-outgoing; Wed, 26 Feb 1997 12:10:47 -0800 (PST) Received: from clem.systemsix.com (clem.systemsix.com [198.99.86.131]) by freefall.freebsd.org (8.8.5/8.8.5) with SMTP id MAA00154 for ; Wed, 26 Feb 1997 12:09:27 -0800 (PST) Received: from localhost (localhost [127.0.0.1]) by clem.systemsix.com (8.6.12/8.6.12) with SMTP id NAA21658 for ; Wed, 26 Feb 1997 13:08:13 -0700 Message-Id: <199702262008.NAA21658@clem.systemsix.com> X-Authentication-Warning: clem.systemsix.com: Host localhost didn't use HELO protocol X-Mailer: exmh version 1.6.5 12/11/95 From: Steve Passe To: multimedia@FreeBSD.ORG Subject: STB tuner Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Wed, 26 Feb 1997 13:08:13 -0700 Sender: owner-multimedia@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk Hi, I rang out the lines on the STB card that program the addresses of the tuner and stereo decoder. --- The tuner's PLL (TSA551x) AD line looks to be grounded, which puts its address at: 0xc0 (write) 0xc1 (read) --- The stereo decoder (TDA9850) has its MAD line floating (NOT connected to ground), so its address should be: 0xb6 (write) 0xb7 (read) -------------- open questions: 1: is PORT bit P3 ("custom application bit") of the tuner module attached/used for anything? Note that I CANNOT find any output pin on the tuner for this signal so I suspect its a moot point. 2: the tuner datasheet (FI1236) page 14, note #3, says: I2,I1,I0 = digital info for IO ports P2,P1,P0 BUT the pll datasheet (TSA5511) page 5, table 2, says: I2,I1,I0 = digital info for IO ports P7,P5,P4 If anyone has the "tin can" open, could they record the chip numbers? unfortunately someone already looked at the top side and saw no I2C chips, the chip of interest is probably on the bottom side... 3: I need a source documenting the frequencies of "channels", ie, for each tv channel I need to know its actual frequency. Can anyone explain why the tuner datasheet claims support for channels 2 thru 69, while the STB manual claims "125 channel ready"? is that a CATV number, with CATV channels being more tighly packed? or ??? -- Steve Passe | powered by smp@csn.net | FreeBSD